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a1bb33af UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Bert Vermeulen <bert@biot.com> | |
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 <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <sys/time.h> | |
23 | #include <inttypes.h> | |
24 | #include <glib.h> | |
25 | #include <libusb.h> | |
26 | #include "config.h" | |
27 | #include "sigrok.h" | |
28 | ||
6f5f21f9 | 29 | #define USB_VENDOR 0x0925 |
a1bb33af | 30 | #define USB_PRODUCT 0x3881 |
6f5f21f9 | 31 | #define USB_VENDOR_NAME "Saleae" |
a1bb33af UH |
32 | #define USB_MODEL_NAME "Logic" |
33 | #define USB_MODEL_VERSION "" | |
34 | ||
35 | #define USB_INTERFACE 0 | |
36 | #define USB_CONFIGURATION 1 | |
6f5f21f9 | 37 | #define NUM_PROBES 8 |
a1bb33af UH |
38 | #define NUM_TRIGGER_STAGES 4 |
39 | #define TRIGGER_TYPES "01" | |
6f5f21f9 | 40 | #define FIRMWARE FIRMWARE_DIR "/saleae-logic.firmware" |
a1bb33af UH |
41 | |
42 | /* delay in ms */ | |
6f5f21f9 UH |
43 | #define FIRMWARE_RENUM_DELAY 2000 |
44 | #define NUM_SIMUL_TRANSFERS 10 | |
45 | #define MAX_EMPTY_TRANSFERS (NUM_SIMUL_TRANSFERS * 2) | |
a1bb33af UH |
46 | |
47 | /* software trigger implementation: positive values indicate trigger stage */ | |
48 | #define TRIGGER_FIRED -1 | |
49 | ||
6f5f21f9 | 50 | /* There is only one model Saleae Logic, and this is what it supports: */ |
a1bb33af UH |
51 | static int capabilities[] = { |
52 | HWCAP_LOGIC_ANALYZER, | |
53 | HWCAP_SAMPLERATE, | |
54 | ||
6f5f21f9 | 55 | /* These are really implemented in the driver, not the hardware. */ |
a1bb33af | 56 | HWCAP_LIMIT_SAMPLES, |
6f5f21f9 | 57 | 0, |
a1bb33af UH |
58 | }; |
59 | ||
6f5f21f9 | 60 | /* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */ |
a1bb33af UH |
61 | static GSList *device_instances = NULL; |
62 | ||
6f5f21f9 UH |
63 | /* |
64 | * Since we can't keep track of a Saleae Logic device after upgrading the | |
a1bb33af UH |
65 | * firmware -- it re-enumerates into a different device address after the |
66 | * upgrade -- this is like a global lock. No device will open until a proper | |
67 | * delay after the last device was upgraded. | |
68 | */ | |
6f5f21f9 | 69 | GTimeVal firmware_updated = { 0 }; |
a1bb33af UH |
70 | |
71 | static libusb_context *usb_context = NULL; | |
72 | ||
73 | static uint64_t supported_samplerates[] = { | |
74 | KHZ(200), | |
75 | KHZ(250), | |
76 | KHZ(500), | |
77 | MHZ(1), | |
78 | MHZ(2), | |
79 | MHZ(4), | |
80 | MHZ(8), | |
81 | MHZ(12), | |
82 | MHZ(16), | |
83 | MHZ(24), | |
6f5f21f9 | 84 | 0, |
a1bb33af UH |
85 | }; |
86 | ||
87 | static struct samplerates samplerates = { | |
88 | KHZ(200), | |
89 | MHZ(24), | |
90 | 0, | |
6f5f21f9 | 91 | supported_samplerates, |
a1bb33af UH |
92 | }; |
93 | ||
6f5f21f9 | 94 | /* TODO: All of these should go in a device-specific struct. */ |
4c100f32 | 95 | static uint64_t cur_samplerate = 0; |
a1bb33af | 96 | static uint64_t limit_samples = 0; |
6f5f21f9 UH |
97 | static uint8_t probe_mask = 0; |
98 | static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 }; | |
99 | static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 }; | |
100 | static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 }; | |
a1bb33af UH |
101 | int trigger_stage = TRIGGER_FIRED; |
102 | ||
a1bb33af UH |
103 | static int hw_set_configuration(int device_index, int capability, void *value); |
104 | ||
a1bb33af UH |
105 | /* returns 1 if the device's configuration profile match the Logic firmware's |
106 | * configuration, 0 otherwise | |
107 | */ | |
108 | int check_conf_profile(libusb_device *dev) | |
109 | { | |
110 | struct libusb_device_descriptor des; | |
6f5f21f9 | 111 | struct libusb_config_descriptor *conf_dsc = NULL; |
a1bb33af | 112 | const struct libusb_interface_descriptor *intf_dsc; |
6f5f21f9 | 113 | int ret = -1; |
a1bb33af | 114 | |
6f5f21f9 UH |
115 | while (ret == -1) { |
116 | /* Assume it's not a Saleae Logic unless proven wrong. */ | |
a1bb33af UH |
117 | ret = 0; |
118 | ||
6f5f21f9 | 119 | if (libusb_get_device_descriptor(dev, &des) != 0) |
a1bb33af UH |
120 | break; |
121 | ||
6f5f21f9 UH |
122 | if (des.bNumConfigurations != 1) |
123 | /* Need exactly 1 configuration. */ | |
a1bb33af UH |
124 | break; |
125 | ||
6f5f21f9 | 126 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) |
a1bb33af UH |
127 | break; |
128 | ||
6f5f21f9 UH |
129 | if (conf_dsc->bNumInterfaces != 1) |
130 | /* Need exactly 1 interface. */ | |
a1bb33af UH |
131 | break; |
132 | ||
6f5f21f9 UH |
133 | if (conf_dsc->interface[0].num_altsetting != 1) |
134 | /* Need just one alternate setting. */ | |
a1bb33af UH |
135 | break; |
136 | ||
137 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
6f5f21f9 UH |
138 | if (intf_dsc->bNumEndpoints != 2) |
139 | /* Need 2 endpoints. */ | |
a1bb33af UH |
140 | break; |
141 | ||
6f5f21f9 UH |
142 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != |
143 | (1 | LIBUSB_ENDPOINT_OUT)) | |
144 | /* First endpoint should be 1 (outbound). */ | |
a1bb33af UH |
145 | break; |
146 | ||
6f5f21f9 UH |
147 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != |
148 | (2 | LIBUSB_ENDPOINT_IN)) | |
149 | /* First endpoint should be 2 (inbound). */ | |
a1bb33af UH |
150 | break; |
151 | ||
6f5f21f9 | 152 | /* If we made it here, it must be a Saleae Logic. */ |
a1bb33af UH |
153 | ret = 1; |
154 | } | |
6f5f21f9 UH |
155 | |
156 | if (conf_dsc) | |
a1bb33af UH |
157 | libusb_free_config_descriptor(conf_dsc); |
158 | ||
159 | return ret; | |
160 | } | |
161 | ||
a1bb33af UH |
162 | struct sigrok_device_instance *sl_open_device(int device_index) |
163 | { | |
164 | struct sigrok_device_instance *sdi; | |
165 | libusb_device **devlist; | |
166 | struct libusb_device_descriptor des; | |
167 | int err, skip, i; | |
168 | ||
6f5f21f9 | 169 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af UH |
170 | return NULL; |
171 | ||
172 | libusb_get_device_list(usb_context, &devlist); | |
6f5f21f9 UH |
173 | if (sdi->status == ST_INITIALIZING) { |
174 | /* | |
175 | * This device was renumerating last time we touched it. | |
176 | * opendev() guarantees we've waited long enough for it to | |
177 | * have booted properly, so now we need to find it on | |
a1bb33af UH |
178 | * the bus and record its new address. |
179 | */ | |
180 | skip = 0; | |
6f5f21f9 UH |
181 | for (i = 0; devlist[i]; i++) { |
182 | if ((err = libusb_get_device_descriptor(devlist[i], &des))) { | |
183 | g_warning("failed to get device descriptor: %d", | |
184 | err); | |
a1bb33af UH |
185 | continue; |
186 | } | |
187 | ||
6f5f21f9 UH |
188 | if (des.idVendor == USB_VENDOR |
189 | && des.idProduct == USB_PRODUCT) { | |
190 | if (skip != device_index) { | |
191 | /* | |
192 | * Skip past devices of this type that | |
193 | * aren't the one we want. | |
194 | */ | |
a1bb33af UH |
195 | skip++; |
196 | continue; | |
197 | } | |
198 | ||
6f5f21f9 UH |
199 | /* |
200 | * Should check the bus here, since we know | |
201 | * that already... but what are we going to do | |
202 | * if it doesn't match after the right number | |
203 | * of skips? | |
a1bb33af | 204 | */ |
6f5f21f9 UH |
205 | if (!(err = libusb_open(devlist[i], |
206 | &(sdi->usb->devhdl)))) { | |
207 | sdi->usb->address = libusb_get_device_address(devlist [i]); | |
a1bb33af | 208 | sdi->status = ST_ACTIVE; |
6f5f21f9 UH |
209 | g_message("opened device %d on %d.%d " |
210 | "interface %d", | |
211 | sdi->index, sdi->usb->bus, | |
212 | sdi->usb->address, USB_INTERFACE); | |
213 | } else { | |
214 | g_warning("failed to open device: %d", | |
215 | err); | |
a1bb33af UH |
216 | sdi = NULL; |
217 | } | |
218 | } | |
219 | } | |
6f5f21f9 UH |
220 | } else if (sdi->status == ST_INACTIVE) { |
221 | /* | |
222 | * This device is fully enumerated, so we need to find this | |
223 | * device by vendor, product, bus and address. | |
224 | */ | |
a1bb33af | 225 | libusb_get_device_list(usb_context, &devlist); |
6f5f21f9 UH |
226 | for (i = 0; devlist[i]; i++) { |
227 | if ((err = | |
228 | libusb_get_device_descriptor(devlist[i], &des))) { | |
229 | g_warning("failed to get device descriptor: %d", | |
230 | err); | |
a1bb33af UH |
231 | continue; |
232 | } | |
233 | ||
6f5f21f9 UH |
234 | if (des.idVendor == USB_VENDOR |
235 | && des.idProduct == USB_PRODUCT) { | |
236 | if (libusb_get_bus_number(devlist[i]) == | |
237 | sdi->usb->bus | |
238 | && libusb_get_device_address(devlist[i]) == | |
239 | sdi->usb->address) { | |
240 | /* Found it. */ | |
241 | if (!(err = libusb_open(devlist[i], | |
242 | &(sdi->usb->devhdl)))) { | |
a1bb33af | 243 | sdi->status = ST_ACTIVE; |
6f5f21f9 UH |
244 | g_message("opened device %d on " |
245 | "%d.%d interface %d", | |
246 | sdi->index, sdi->usb->bus, | |
247 | sdi->usb->address, | |
248 | USB_INTERFACE); | |
249 | } else { | |
a1bb33af UH |
250 | g_warning("failed to open device: %d", err); |
251 | sdi = NULL; | |
252 | } | |
253 | } | |
254 | } | |
255 | } | |
6f5f21f9 UH |
256 | } else { |
257 | /* Status must be ST_ACTIVE, i.e. already in use... */ | |
a1bb33af UH |
258 | sdi = NULL; |
259 | } | |
260 | libusb_free_device_list(devlist, 1); | |
261 | ||
6f5f21f9 | 262 | if (sdi && sdi->status != ST_ACTIVE) |
a1bb33af UH |
263 | sdi = NULL; |
264 | ||
265 | return sdi; | |
266 | } | |
267 | ||
a1bb33af UH |
268 | int upload_firmware(libusb_device *dev) |
269 | { | |
270 | struct libusb_device_handle *hdl; | |
271 | int err; | |
272 | ||
273 | g_message("uploading firmware to device on %d.%d", | |
6f5f21f9 | 274 | libusb_get_bus_number(dev), libusb_get_device_address(dev)); |
a1bb33af UH |
275 | |
276 | err = libusb_open(dev, &hdl); | |
6f5f21f9 | 277 | if (err != 0) { |
a1bb33af UH |
278 | g_warning("failed to open device: %d", err); |
279 | return 1; | |
280 | } | |
281 | ||
282 | err = libusb_set_configuration(hdl, USB_CONFIGURATION); | |
6f5f21f9 | 283 | if (err != 0) { |
a1bb33af UH |
284 | g_warning("Unable to set configuration: %d", err); |
285 | return 1; | |
286 | } | |
287 | ||
6f5f21f9 | 288 | if ((ezusb_reset(hdl, 1)) < 0) |
a1bb33af UH |
289 | return 1; |
290 | ||
6f5f21f9 | 291 | if (ezusb_install_firmware(hdl, FIRMWARE) != 0) |
a1bb33af UH |
292 | return 1; |
293 | ||
6f5f21f9 | 294 | if ((ezusb_reset(hdl, 0)) < 0) |
a1bb33af UH |
295 | return 1; |
296 | ||
297 | libusb_close(hdl); | |
298 | ||
6f5f21f9 | 299 | /* Remember when the last firmware update was done. */ |
a1bb33af UH |
300 | g_get_current_time(&firmware_updated); |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
a1bb33af UH |
305 | static void close_device(struct sigrok_device_instance *sdi) |
306 | { | |
f6958dab UH |
307 | if (sdi->usb->devhdl == NULL) |
308 | return; | |
309 | ||
310 | g_message("closing device %d on %d.%d interface %d", sdi->index, | |
311 | sdi->usb->bus, sdi->usb->address, USB_INTERFACE); | |
312 | libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE); | |
313 | libusb_close(sdi->usb->devhdl); | |
314 | sdi->usb->devhdl = NULL; | |
315 | sdi->status = ST_INACTIVE; | |
a1bb33af UH |
316 | } |
317 | ||
6f5f21f9 | 318 | static int configure_probes(GSList * probes) |
a1bb33af UH |
319 | { |
320 | struct probe *probe; | |
321 | GSList *l; | |
322 | int probe_bit, stage, i; | |
323 | char *tc; | |
324 | ||
325 | probe_mask = 0; | |
6f5f21f9 | 326 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { |
a1bb33af UH |
327 | trigger_mask[i] = 0; |
328 | trigger_value[i] = 0; | |
329 | } | |
330 | ||
331 | stage = -1; | |
6f5f21f9 UH |
332 | for (l = probes; l; l = l->next) { |
333 | probe = (struct probe *)l->data; | |
334 | if (probe->enabled == FALSE) | |
a1bb33af UH |
335 | continue; |
336 | probe_bit = 1 << (probe->index - 1); | |
337 | probe_mask |= probe_bit; | |
6f5f21f9 | 338 | if (probe->trigger) { |
a1bb33af | 339 | stage = 0; |
6f5f21f9 | 340 | for (tc = probe->trigger; *tc; tc++) { |
a1bb33af | 341 | trigger_mask[stage] |= probe_bit; |
6f5f21f9 | 342 | if (*tc == '1') |
a1bb33af UH |
343 | trigger_value[stage] |= probe_bit; |
344 | stage++; | |
6f5f21f9 | 345 | if (stage > NUM_TRIGGER_STAGES) |
e31b636d | 346 | return SIGROK_ERR; |
a1bb33af UH |
347 | } |
348 | } | |
349 | } | |
350 | ||
6f5f21f9 UH |
351 | if (stage == -1) |
352 | /* | |
353 | * We didn't configure any triggers, make sure acquisition | |
354 | * doesn't wait for any. | |
355 | */ | |
a1bb33af UH |
356 | trigger_stage = TRIGGER_FIRED; |
357 | else | |
358 | trigger_stage = 0; | |
359 | ||
360 | return SIGROK_OK; | |
361 | } | |
362 | ||
a1bb33af UH |
363 | /* |
364 | * API callbacks | |
365 | */ | |
366 | ||
367 | static int hw_init(char *deviceinfo) | |
368 | { | |
369 | struct sigrok_device_instance *sdi; | |
370 | struct libusb_device_descriptor des; | |
371 | libusb_device **devlist; | |
372 | int err, devcnt, i; | |
373 | ||
6f5f21f9 | 374 | if (libusb_init(&usb_context) != 0) { |
a1bb33af UH |
375 | g_warning("Failed to initialize USB."); |
376 | return 0; | |
377 | } | |
378 | libusb_set_debug(usb_context, 3); | |
379 | ||
6f5f21f9 | 380 | /* Find all Saleae Logic devices and upload firmware to all of them. */ |
a1bb33af UH |
381 | devcnt = 0; |
382 | libusb_get_device_list(usb_context, &devlist); | |
6f5f21f9 | 383 | for (i = 0; devlist[i]; i++) { |
a1bb33af | 384 | err = libusb_get_device_descriptor(devlist[i], &des); |
6f5f21f9 | 385 | if (err != 0) { |
a1bb33af UH |
386 | g_warning("failed to get device descriptor: %d", err); |
387 | continue; | |
388 | } | |
389 | ||
f6958dab UH |
390 | if (des.idVendor != USB_VENDOR || des.idProduct != USB_PRODUCT) |
391 | continue; /* Not a Saleae Logic... */ | |
a1bb33af | 392 | |
f6958dab UH |
393 | sdi = sigrok_device_instance_new(devcnt, ST_INITIALIZING, |
394 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
395 | if (!sdi) | |
396 | return 0; | |
397 | device_instances = g_slist_append(device_instances, sdi); | |
6f5f21f9 | 398 | |
f6958dab UH |
399 | if (check_conf_profile(devlist[i]) == 0) { |
400 | /* | |
401 | * Continue on the off chance that the device is in a | |
402 | * working state. TODO: Could maybe try a USB reset, | |
403 | * or uploading the firmware again. | |
404 | */ | |
405 | if (upload_firmware(devlist[i]) > 0) | |
406 | g_warning("firmware upload failed for device %d", devcnt); | |
a1bb33af | 407 | |
f6958dab UH |
408 | sdi->usb = usb_device_instance_new |
409 | (libusb_get_bus_number(devlist[i]), 0, NULL); | |
410 | } else { | |
411 | /* Already has the firmware, so fix the new address. */ | |
412 | sdi->usb = usb_device_instance_new | |
413 | (libusb_get_bus_number(devlist[i]), | |
414 | libusb_get_device_address(devlist[i]), | |
415 | NULL); | |
a1bb33af | 416 | } |
f6958dab | 417 | devcnt++; |
a1bb33af UH |
418 | } |
419 | libusb_free_device_list(devlist, 1); | |
420 | ||
421 | return devcnt; | |
422 | } | |
423 | ||
a1bb33af UH |
424 | static int hw_opendev(int device_index) |
425 | { | |
426 | GTimeVal cur_time; | |
427 | struct sigrok_device_instance *sdi; | |
428 | int timediff, err; | |
429 | unsigned int cur, upd; | |
430 | ||
6f5f21f9 UH |
431 | if (firmware_updated.tv_sec > 0) { |
432 | /* Firmware was recently uploaded. */ | |
a1bb33af UH |
433 | g_get_current_time(&cur_time); |
434 | cur = cur_time.tv_sec * 1000 + cur_time.tv_usec / 1000; | |
6f5f21f9 UH |
435 | upd = firmware_updated.tv_sec * 1000 + |
436 | firmware_updated.tv_usec / 1000; | |
a1bb33af | 437 | timediff = cur - upd; |
6f5f21f9 | 438 | if (timediff < FIRMWARE_RENUM_DELAY) { |
a1bb33af | 439 | timediff = FIRMWARE_RENUM_DELAY - timediff; |
6f5f21f9 UH |
440 | g_message("waiting %d ms for device to reset", |
441 | timediff); | |
a1bb33af UH |
442 | g_usleep(timediff * 1000); |
443 | firmware_updated.tv_sec = 0; | |
444 | } | |
445 | } | |
446 | ||
6f5f21f9 | 447 | if (!(sdi = sl_open_device(device_index))) { |
a1bb33af | 448 | g_warning("unable to open device"); |
e31b636d | 449 | return SIGROK_ERR; |
a1bb33af UH |
450 | } |
451 | ||
452 | err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE); | |
6f5f21f9 | 453 | if (err != 0) { |
a1bb33af | 454 | g_warning("Unable to claim interface: %d", err); |
e31b636d | 455 | return SIGROK_ERR; |
a1bb33af UH |
456 | } |
457 | ||
6f5f21f9 UH |
458 | if (cur_samplerate == 0) { |
459 | /* Samplerate hasn't been set; default to the slowest one. */ | |
460 | if (hw_set_configuration(device_index, HWCAP_SAMPLERATE, | |
461 | &supported_samplerates[0]) == SIGROK_ERR) | |
e31b636d | 462 | return SIGROK_ERR; |
a1bb33af UH |
463 | } |
464 | ||
465 | return SIGROK_OK; | |
466 | } | |
467 | ||
a1bb33af UH |
468 | static void hw_closedev(int device_index) |
469 | { | |
470 | struct sigrok_device_instance *sdi; | |
471 | ||
6f5f21f9 | 472 | if ((sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af | 473 | close_device(sdi); |
a1bb33af UH |
474 | } |
475 | ||
a1bb33af UH |
476 | static void hw_cleanup(void) |
477 | { | |
478 | GSList *l; | |
479 | ||
6f5f21f9 UH |
480 | /* Properly close all devices... */ |
481 | for (l = device_instances; l; l = l->next) | |
482 | close_device((struct sigrok_device_instance *)l->data); | |
a1bb33af | 483 | |
6f5f21f9 UH |
484 | /* ...and free all their memory. */ |
485 | for (l = device_instances; l; l = l->next) | |
a1bb33af UH |
486 | g_free(l->data); |
487 | g_slist_free(device_instances); | |
488 | device_instances = NULL; | |
489 | ||
6f5f21f9 | 490 | if (usb_context) |
a1bb33af UH |
491 | libusb_exit(usb_context); |
492 | usb_context = NULL; | |
a1bb33af UH |
493 | } |
494 | ||
a1bb33af UH |
495 | static void *hw_get_device_info(int device_index, int device_info_id) |
496 | { | |
497 | struct sigrok_device_instance *sdi; | |
6f5f21f9 | 498 | void *info = NULL; |
a1bb33af | 499 | |
6f5f21f9 | 500 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af UH |
501 | return NULL; |
502 | ||
6f5f21f9 | 503 | switch (device_info_id) { |
a1bb33af UH |
504 | case DI_INSTANCE: |
505 | info = sdi; | |
506 | break; | |
507 | case DI_NUM_PROBES: | |
508 | info = GINT_TO_POINTER(NUM_PROBES); | |
509 | break; | |
510 | case DI_SAMPLERATES: | |
511 | info = &samplerates; | |
512 | break; | |
513 | case DI_TRIGGER_TYPES: | |
514 | info = TRIGGER_TYPES; | |
515 | break; | |
4c100f32 UH |
516 | case DI_CUR_SAMPLERATE: |
517 | info = &cur_samplerate; | |
a1bb33af UH |
518 | break; |
519 | } | |
520 | ||
521 | return info; | |
522 | } | |
523 | ||
a1bb33af UH |
524 | static int hw_get_status(int device_index) |
525 | { | |
526 | struct sigrok_device_instance *sdi; | |
527 | ||
528 | sdi = get_sigrok_device_instance(device_instances, device_index); | |
6f5f21f9 | 529 | if (sdi) |
a1bb33af UH |
530 | return sdi->status; |
531 | else | |
532 | return ST_NOT_FOUND; | |
533 | } | |
534 | ||
a1bb33af UH |
535 | static int *hw_get_capabilities(void) |
536 | { | |
a1bb33af UH |
537 | return capabilities; |
538 | } | |
539 | ||
6f5f21f9 UH |
540 | static int set_configuration_samplerate(struct sigrok_device_instance *sdi, |
541 | uint64_t samplerate) | |
a1bb33af UH |
542 | { |
543 | uint8_t divider; | |
544 | int ret, result, i; | |
545 | unsigned char buf[2]; | |
546 | ||
6f5f21f9 UH |
547 | for (i = 0; supported_samplerates[i]; i++) { |
548 | if (supported_samplerates[i] == samplerate) | |
a1bb33af UH |
549 | break; |
550 | } | |
6f5f21f9 | 551 | if (supported_samplerates[i] == 0) |
e31b636d | 552 | return SIGROK_ERR_SAMPLERATE; |
a1bb33af | 553 | |
6f5f21f9 | 554 | divider = (uint8_t) (48 / (float)(samplerate / 1000000)) - 1; |
a1bb33af | 555 | |
6f5f21f9 UH |
556 | g_message("setting samplerate to %" PRIu64 " Hz (divider %d)", |
557 | samplerate, divider); | |
a1bb33af UH |
558 | buf[0] = 0x01; |
559 | buf[1] = divider; | |
6f5f21f9 UH |
560 | ret = libusb_bulk_transfer(sdi->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT, |
561 | buf, 2, &result, 500); | |
562 | if (ret != 0) { | |
a1bb33af | 563 | g_warning("failed to set samplerate: %d", ret); |
e31b636d | 564 | return SIGROK_ERR; |
a1bb33af | 565 | } |
4c100f32 | 566 | cur_samplerate = samplerate; |
a1bb33af UH |
567 | |
568 | return SIGROK_OK; | |
569 | } | |
570 | ||
a1bb33af UH |
571 | static int hw_set_configuration(int device_index, int capability, void *value) |
572 | { | |
573 | struct sigrok_device_instance *sdi; | |
574 | int ret; | |
575 | uint64_t *tmp_u64; | |
576 | ||
6f5f21f9 | 577 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
e31b636d | 578 | return SIGROK_ERR; |
a1bb33af | 579 | |
6f5f21f9 | 580 | if (capability == HWCAP_SAMPLERATE) { |
a1bb33af UH |
581 | tmp_u64 = value; |
582 | ret = set_configuration_samplerate(sdi, *tmp_u64); | |
6f5f21f9 UH |
583 | } else if (capability == HWCAP_PROBECONFIG) { |
584 | ret = configure_probes((GSList *) value); | |
585 | } else if (capability == HWCAP_LIMIT_SAMPLES) { | |
a1bb33af UH |
586 | limit_samples = strtoull(value, NULL, 10); |
587 | ret = SIGROK_OK; | |
6f5f21f9 | 588 | } else { |
e31b636d | 589 | ret = SIGROK_ERR; |
6f5f21f9 | 590 | } |
a1bb33af UH |
591 | |
592 | return ret; | |
593 | } | |
594 | ||
a1bb33af UH |
595 | static int receive_data(int fd, int revents, void *user_data) |
596 | { | |
597 | struct timeval tv; | |
598 | ||
599 | tv.tv_sec = tv.tv_usec = 0; | |
600 | libusb_handle_events_timeout(usb_context, &tv); | |
601 | ||
602 | return TRUE; | |
603 | } | |
604 | ||
a1bb33af UH |
605 | void receive_transfer(struct libusb_transfer *transfer) |
606 | { | |
607 | static int num_samples = 0; | |
608 | static int empty_transfer_count = 0; | |
a1bb33af UH |
609 | struct datafeed_packet packet; |
610 | void *user_data; | |
611 | int cur_buflen, trigger_offset, i; | |
612 | unsigned char *cur_buf, *new_buf; | |
613 | ||
f6958dab UH |
614 | /* hw_stop_acquisition() is telling us to stop. */ |
615 | if (transfer == NULL) | |
a1bb33af | 616 | num_samples = -1; |
a1bb33af | 617 | |
f6958dab UH |
618 | /* |
619 | * If acquisition has already ended, just free any queued up | |
620 | * transfer that come in. | |
621 | */ | |
6f5f21f9 | 622 | if (num_samples == -1) { |
a1bb33af | 623 | libusb_free_transfer(transfer); |
f6958dab UH |
624 | return; |
625 | } | |
a1bb33af | 626 | |
f6958dab UH |
627 | g_message("receive_transfer(): status %d received %d bytes", |
628 | transfer->status, transfer->actual_length); | |
629 | ||
630 | /* Save incoming transfer before reusing the transfer struct. */ | |
631 | cur_buf = transfer->buffer; | |
632 | cur_buflen = transfer->actual_length; | |
633 | user_data = transfer->user_data; | |
634 | ||
635 | /* Fire off a new request. */ | |
636 | new_buf = g_malloc(4096); | |
637 | transfer->buffer = new_buf; | |
638 | transfer->length = 4096; | |
639 | if (libusb_submit_transfer(transfer) != 0) { | |
640 | /* TODO: Stop session? */ | |
641 | g_warning("eek"); | |
642 | } | |
643 | ||
644 | if (cur_buflen == 0) { | |
645 | empty_transfer_count++; | |
646 | if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
647 | /* | |
648 | * The FX2 gave up. End the acquisition, the frontend | |
649 | * will work out that the samplecount is short. | |
650 | */ | |
651 | packet.type = DF_END; | |
652 | session_bus(user_data, &packet); | |
653 | num_samples = -1; | |
6f5f21f9 | 654 | } |
f6958dab UH |
655 | return; |
656 | } else { | |
657 | empty_transfer_count = 0; | |
658 | } | |
a1bb33af | 659 | |
f6958dab UH |
660 | trigger_offset = 0; |
661 | if (trigger_stage >= 0) { | |
662 | for (i = 0; i < cur_buflen; i++) { | |
663 | if ((cur_buf[i] & trigger_mask[trigger_stage]) | |
664 | == trigger_value[trigger_stage]) { | |
665 | /* Match on this trigger stage. */ | |
666 | trigger_buffer[trigger_stage] = cur_buf[i]; | |
667 | trigger_stage++; | |
668 | if (trigger_stage == NUM_TRIGGER_STAGES | |
669 | || trigger_mask[trigger_stage] == 0) { | |
670 | /* Match on all trigger stages, we're done */ | |
671 | trigger_offset = i + 1; | |
672 | ||
673 | /* TODO: Send pre-trigger buffer to session bus. Tell the frontend we hit the trigger here. */ | |
674 | packet.type = DF_TRIGGER; | |
675 | packet.length = 0; | |
676 | session_bus(user_data, &packet); | |
677 | ||
678 | /* Send the samples that triggered it, since we're skipping past them. */ | |
679 | packet.type = DF_LOGIC8; | |
680 | packet.length = trigger_stage; | |
681 | packet.payload = trigger_buffer; | |
682 | session_bus(user_data, &packet); | |
683 | break; | |
684 | ||
685 | trigger_stage = TRIGGER_FIRED; | |
a1bb33af | 686 | } |
f6958dab UH |
687 | } else if (trigger_stage > 0) { |
688 | /* | |
689 | * We had a match before, but not in the next sample. However, we may | |
690 | * have a match on this stage in the next bit -- trigger on 0001 will | |
691 | * fail on seeing 00001, so we need to go back to stage 0 -- but at | |
692 | * the next sample from the one that matched originally, which the | |
693 | * counter increment at the end of the loop takes care of. | |
694 | */ | |
695 | i -= trigger_stage; | |
696 | if (i < -1) | |
697 | /* Oops, went back past this buffer. */ | |
698 | i = -1; | |
699 | /* Reset trigger stage. */ | |
700 | trigger_stage = 0; | |
a1bb33af UH |
701 | } |
702 | } | |
f6958dab | 703 | } |
a1bb33af | 704 | |
f6958dab UH |
705 | if (trigger_stage == TRIGGER_FIRED) { |
706 | /* Send the incoming transfer to the session bus. */ | |
707 | packet.type = DF_LOGIC8; | |
708 | packet.length = cur_buflen - trigger_offset; | |
709 | packet.payload = cur_buf + trigger_offset; | |
710 | session_bus(user_data, &packet); | |
711 | g_free(cur_buf); | |
712 | ||
713 | num_samples += cur_buflen; | |
714 | if (num_samples > limit_samples) { | |
715 | /* End the acquisition. */ | |
716 | packet.type = DF_END; | |
a1bb33af | 717 | session_bus(user_data, &packet); |
f6958dab | 718 | num_samples = -1; |
a1bb33af | 719 | } |
f6958dab UH |
720 | } else { |
721 | /* | |
722 | * TODO: Buffer pre-trigger data in capture | |
723 | * ratio-sized buffer. | |
724 | */ | |
a1bb33af | 725 | } |
a1bb33af UH |
726 | } |
727 | ||
a1bb33af UH |
728 | static int hw_start_acquisition(int device_index, gpointer session_device_id) |
729 | { | |
730 | struct sigrok_device_instance *sdi; | |
731 | struct datafeed_packet *packet; | |
732 | struct datafeed_header *header; | |
733 | struct libusb_transfer *transfer; | |
734 | const struct libusb_pollfd **lupfd; | |
735 | int size, i; | |
736 | unsigned char *buf; | |
737 | ||
6f5f21f9 | 738 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
e31b636d | 739 | return SIGROK_ERR; |
a1bb33af UH |
740 | |
741 | packet = g_malloc(sizeof(struct datafeed_packet)); | |
742 | header = g_malloc(sizeof(struct datafeed_header)); | |
6f5f21f9 | 743 | if (!packet || !header) |
e31b636d | 744 | return SIGROK_ERR; |
a1bb33af | 745 | |
6f5f21f9 | 746 | /* Start with 2K transfer, subsequently increased to 4K. */ |
a1bb33af | 747 | size = 2048; |
6f5f21f9 | 748 | for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { |
a1bb33af UH |
749 | buf = g_malloc(size); |
750 | transfer = libusb_alloc_transfer(0); | |
6f5f21f9 UH |
751 | libusb_fill_bulk_transfer(transfer, sdi->usb->devhdl, |
752 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
a1bb33af | 753 | receive_transfer, session_device_id, 40); |
6f5f21f9 UH |
754 | if (libusb_submit_transfer(transfer) != 0) { |
755 | /* TODO: Free them all. */ | |
a1bb33af UH |
756 | libusb_free_transfer(transfer); |
757 | g_free(buf); | |
e31b636d | 758 | return SIGROK_ERR; |
a1bb33af UH |
759 | } |
760 | size = 4096; | |
761 | } | |
762 | ||
763 | lupfd = libusb_get_pollfds(usb_context); | |
6f5f21f9 UH |
764 | for (i = 0; lupfd[i]; i++) |
765 | source_add(lupfd[i]->fd, lupfd[i]->events, -1, receive_data, | |
766 | NULL); | |
a1bb33af UH |
767 | free(lupfd); |
768 | ||
769 | packet->type = DF_HEADER; | |
770 | packet->length = sizeof(struct datafeed_header); | |
6f5f21f9 | 771 | packet->payload = (unsigned char *)header; |
a1bb33af UH |
772 | header->feed_version = 1; |
773 | gettimeofday(&header->starttime, NULL); | |
4c100f32 | 774 | header->samplerate = cur_samplerate; |
a1bb33af UH |
775 | header->protocol_id = PROTO_RAW; |
776 | header->num_probes = NUM_PROBES; | |
777 | session_bus(session_device_id, packet); | |
778 | g_free(header); | |
779 | g_free(packet); | |
780 | ||
781 | return SIGROK_OK; | |
782 | } | |
783 | ||
6f5f21f9 | 784 | /* This stops acquisition on ALL devices, ignoring device_index. */ |
a1bb33af UH |
785 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) |
786 | { | |
787 | struct datafeed_packet packet; | |
788 | ||
789 | packet.type = DF_END; | |
790 | session_bus(session_device_id, &packet); | |
791 | ||
792 | receive_transfer(NULL); | |
793 | ||
6f5f21f9 | 794 | /* TODO: Need to cancel and free any queued up transfers. */ |
a1bb33af UH |
795 | } |
796 | ||
a1bb33af UH |
797 | struct device_plugin saleae_logic_plugin_info = { |
798 | "saleae-logic", | |
799 | 1, | |
800 | hw_init, | |
801 | hw_cleanup, | |
802 | ||
803 | hw_opendev, | |
804 | hw_closedev, | |
805 | hw_get_device_info, | |
806 | hw_get_status, | |
807 | hw_get_capabilities, | |
808 | hw_set_configuration, | |
809 | hw_start_acquisition, | |
6f5f21f9 | 810 | hw_stop_acquisition, |
a1bb33af | 811 | }; |