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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> | |
408e7199 | 26 | #include <sigrok.h> |
a1bb33af | 27 | #include "config.h" |
a1bb33af | 28 | |
74b9b438 | 29 | #define USB_VENDOR 0x0925 |
a1bb33af | 30 | #define USB_PRODUCT 0x3881 |
74b9b438 BV |
31 | #define USB_VENDOR_NAME "Saleae" |
32 | #define USB_MODEL_NAME "Logic" | |
33 | #define USB_MODEL_VERSION "" | |
a1bb33af | 34 | |
74b9b438 BV |
35 | #define USB_INTERFACE 0 |
36 | #define USB_CONFIGURATION 1 | |
37 | #define NUM_PROBES 8 | |
38 | #define NUM_TRIGGER_STAGES 4 | |
39 | #define TRIGGER_TYPES "01" | |
40 | #define FIRMWARE FIRMWARE_DIR "/saleae-logic.fw" | |
a1bb33af UH |
41 | |
42 | /* delay in ms */ | |
74b9b438 BV |
43 | #define FIRMWARE_RENUM_DELAY 2000 |
44 | #define NUM_SIMUL_TRANSFERS 10 | |
45 | #define MAX_EMPTY_TRANSFERS (NUM_SIMUL_TRANSFERS * 2) | |
a1bb33af | 46 | |
fed16f06 | 47 | /* Software trigger implementation: positive values indicate trigger stage. */ |
74b9b438 | 48 | #define TRIGGER_FIRED -1 |
a1bb33af | 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, |
74b9b438 | 57 | HWCAP_CONTINUOUS, |
6f5f21f9 | 58 | 0, |
a1bb33af UH |
59 | }; |
60 | ||
6f5f21f9 | 61 | /* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */ |
a1bb33af UH |
62 | static GSList *device_instances = NULL; |
63 | ||
6f5f21f9 UH |
64 | /* |
65 | * Since we can't keep track of a Saleae Logic device after upgrading the | |
a1bb33af UH |
66 | * firmware -- it re-enumerates into a different device address after the |
67 | * upgrade -- this is like a global lock. No device will open until a proper | |
68 | * delay after the last device was upgraded. | |
69 | */ | |
afc8e4de | 70 | GTimeVal firmware_updated = { 0, 0 }; |
a1bb33af UH |
71 | |
72 | static libusb_context *usb_context = NULL; | |
73 | ||
74 | static uint64_t supported_samplerates[] = { | |
75 | KHZ(200), | |
76 | KHZ(250), | |
77 | KHZ(500), | |
78 | MHZ(1), | |
79 | MHZ(2), | |
80 | MHZ(4), | |
81 | MHZ(8), | |
82 | MHZ(12), | |
83 | MHZ(16), | |
84 | MHZ(24), | |
6f5f21f9 | 85 | 0, |
a1bb33af UH |
86 | }; |
87 | ||
88 | static struct samplerates samplerates = { | |
89 | KHZ(200), | |
90 | MHZ(24), | |
91 | 0, | |
6f5f21f9 | 92 | supported_samplerates, |
a1bb33af UH |
93 | }; |
94 | ||
6f5f21f9 | 95 | /* TODO: All of these should go in a device-specific struct. */ |
4c100f32 | 96 | static uint64_t cur_samplerate = 0; |
a1bb33af | 97 | static uint64_t limit_samples = 0; |
6f5f21f9 UH |
98 | static uint8_t probe_mask = 0; |
99 | static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 }; | |
100 | static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 }; | |
101 | static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 }; | |
fed16f06 | 102 | |
a1bb33af UH |
103 | int trigger_stage = TRIGGER_FIRED; |
104 | ||
a1bb33af | 105 | static int hw_set_configuration(int device_index, int capability, void *value); |
9c48090a | 106 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); |
a1bb33af | 107 | |
28fc6de0 UH |
108 | /** |
109 | * Check the USB configuration to determine if this is a Saleae Logic. | |
110 | * | |
111 | * @return 1 if the device's configuration profile match the Logic firmware's | |
112 | * configuration, 0 otherwise. | |
a1bb33af UH |
113 | */ |
114 | int check_conf_profile(libusb_device *dev) | |
115 | { | |
116 | struct libusb_device_descriptor des; | |
6f5f21f9 | 117 | struct libusb_config_descriptor *conf_dsc = NULL; |
a1bb33af | 118 | const struct libusb_interface_descriptor *intf_dsc; |
6f5f21f9 | 119 | int ret = -1; |
a1bb33af | 120 | |
6f5f21f9 UH |
121 | while (ret == -1) { |
122 | /* Assume it's not a Saleae Logic unless proven wrong. */ | |
a1bb33af UH |
123 | ret = 0; |
124 | ||
6f5f21f9 | 125 | if (libusb_get_device_descriptor(dev, &des) != 0) |
a1bb33af UH |
126 | break; |
127 | ||
6f5f21f9 UH |
128 | if (des.bNumConfigurations != 1) |
129 | /* Need exactly 1 configuration. */ | |
a1bb33af UH |
130 | break; |
131 | ||
6f5f21f9 | 132 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) |
a1bb33af UH |
133 | break; |
134 | ||
6f5f21f9 UH |
135 | if (conf_dsc->bNumInterfaces != 1) |
136 | /* Need exactly 1 interface. */ | |
a1bb33af UH |
137 | break; |
138 | ||
6f5f21f9 UH |
139 | if (conf_dsc->interface[0].num_altsetting != 1) |
140 | /* Need just one alternate setting. */ | |
a1bb33af UH |
141 | break; |
142 | ||
143 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
6f5f21f9 UH |
144 | if (intf_dsc->bNumEndpoints != 2) |
145 | /* Need 2 endpoints. */ | |
a1bb33af UH |
146 | break; |
147 | ||
6f5f21f9 UH |
148 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != |
149 | (1 | LIBUSB_ENDPOINT_OUT)) | |
150 | /* First endpoint should be 1 (outbound). */ | |
a1bb33af UH |
151 | break; |
152 | ||
6f5f21f9 UH |
153 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != |
154 | (2 | LIBUSB_ENDPOINT_IN)) | |
155 | /* First endpoint should be 2 (inbound). */ | |
a1bb33af UH |
156 | break; |
157 | ||
6f5f21f9 | 158 | /* If we made it here, it must be a Saleae Logic. */ |
a1bb33af UH |
159 | ret = 1; |
160 | } | |
6f5f21f9 UH |
161 | |
162 | if (conf_dsc) | |
a1bb33af UH |
163 | libusb_free_config_descriptor(conf_dsc); |
164 | ||
165 | return ret; | |
166 | } | |
167 | ||
a1bb33af UH |
168 | struct sigrok_device_instance *sl_open_device(int device_index) |
169 | { | |
170 | struct sigrok_device_instance *sdi; | |
171 | libusb_device **devlist; | |
172 | struct libusb_device_descriptor des; | |
173 | int err, skip, i; | |
174 | ||
6f5f21f9 | 175 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af UH |
176 | return NULL; |
177 | ||
178 | libusb_get_device_list(usb_context, &devlist); | |
6f5f21f9 UH |
179 | if (sdi->status == ST_INITIALIZING) { |
180 | /* | |
181 | * This device was renumerating last time we touched it. | |
182 | * opendev() guarantees we've waited long enough for it to | |
183 | * have booted properly, so now we need to find it on | |
a1bb33af UH |
184 | * the bus and record its new address. |
185 | */ | |
186 | skip = 0; | |
6f5f21f9 | 187 | for (i = 0; devlist[i]; i++) { |
90429916 UH |
188 | /* TODO: Error handling. */ |
189 | err = opendev2(device_index, &sdi, devlist[i], &des, | |
5e59f476 UH |
190 | &skip, USB_VENDOR, USB_PRODUCT, |
191 | USB_INTERFACE); | |
a1bb33af | 192 | } |
6f5f21f9 UH |
193 | } else if (sdi->status == ST_INACTIVE) { |
194 | /* | |
195 | * This device is fully enumerated, so we need to find this | |
196 | * device by vendor, product, bus and address. | |
197 | */ | |
a1bb33af | 198 | libusb_get_device_list(usb_context, &devlist); |
6f5f21f9 | 199 | for (i = 0; devlist[i]; i++) { |
90429916 | 200 | /* TODO: Error handling. */ |
5e59f476 UH |
201 | err = opendev3(&sdi, devlist[i], &des, USB_VENDOR, |
202 | USB_PRODUCT, USB_INTERFACE); | |
a1bb33af | 203 | } |
6f5f21f9 UH |
204 | } else { |
205 | /* Status must be ST_ACTIVE, i.e. already in use... */ | |
a1bb33af UH |
206 | sdi = NULL; |
207 | } | |
208 | libusb_free_device_list(devlist, 1); | |
209 | ||
6f5f21f9 | 210 | if (sdi && sdi->status != ST_ACTIVE) |
a1bb33af UH |
211 | sdi = NULL; |
212 | ||
213 | return sdi; | |
214 | } | |
215 | ||
a1bb33af UH |
216 | int upload_firmware(libusb_device *dev) |
217 | { | |
edf60d05 | 218 | int ret; |
a1bb33af | 219 | |
08cfe6a2 UH |
220 | ret = ezusb_upload_firmware(dev, USB_CONFIGURATION, FIRMWARE); |
221 | if (ret != 0) | |
a1bb33af UH |
222 | return 1; |
223 | ||
6f5f21f9 | 224 | /* Remember when the last firmware update was done. */ |
a1bb33af UH |
225 | g_get_current_time(&firmware_updated); |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
a1bb33af UH |
230 | static void close_device(struct sigrok_device_instance *sdi) |
231 | { | |
f6958dab UH |
232 | if (sdi->usb->devhdl == NULL) |
233 | return; | |
234 | ||
e6ac9ac8 | 235 | g_message("saleae: closing device %d on %d.%d interface %d", sdi->index, |
f6958dab UH |
236 | sdi->usb->bus, sdi->usb->address, USB_INTERFACE); |
237 | libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE); | |
238 | libusb_close(sdi->usb->devhdl); | |
239 | sdi->usb->devhdl = NULL; | |
240 | sdi->status = ST_INACTIVE; | |
a1bb33af UH |
241 | } |
242 | ||
fed16f06 | 243 | static int configure_probes(GSList *probes) |
a1bb33af UH |
244 | { |
245 | struct probe *probe; | |
246 | GSList *l; | |
247 | int probe_bit, stage, i; | |
248 | char *tc; | |
249 | ||
250 | probe_mask = 0; | |
6f5f21f9 | 251 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { |
a1bb33af UH |
252 | trigger_mask[i] = 0; |
253 | trigger_value[i] = 0; | |
254 | } | |
255 | ||
256 | stage = -1; | |
6f5f21f9 UH |
257 | for (l = probes; l; l = l->next) { |
258 | probe = (struct probe *)l->data; | |
259 | if (probe->enabled == FALSE) | |
a1bb33af UH |
260 | continue; |
261 | probe_bit = 1 << (probe->index - 1); | |
262 | probe_mask |= probe_bit; | |
989938f6 UH |
263 | if (!(probe->trigger)) |
264 | continue; | |
265 | ||
266 | stage = 0; | |
267 | for (tc = probe->trigger; *tc; tc++) { | |
268 | trigger_mask[stage] |= probe_bit; | |
269 | if (*tc == '1') | |
270 | trigger_value[stage] |= probe_bit; | |
271 | stage++; | |
272 | if (stage > NUM_TRIGGER_STAGES) | |
273 | return SIGROK_ERR; | |
a1bb33af UH |
274 | } |
275 | } | |
276 | ||
6f5f21f9 UH |
277 | if (stage == -1) |
278 | /* | |
279 | * We didn't configure any triggers, make sure acquisition | |
280 | * doesn't wait for any. | |
281 | */ | |
a1bb33af UH |
282 | trigger_stage = TRIGGER_FIRED; |
283 | else | |
284 | trigger_stage = 0; | |
285 | ||
286 | return SIGROK_OK; | |
287 | } | |
288 | ||
a1bb33af UH |
289 | /* |
290 | * API callbacks | |
291 | */ | |
292 | ||
293 | static int hw_init(char *deviceinfo) | |
294 | { | |
295 | struct sigrok_device_instance *sdi; | |
296 | struct libusb_device_descriptor des; | |
297 | libusb_device **devlist; | |
298 | int err, devcnt, i; | |
299 | ||
afc8e4de UH |
300 | /* QUICK HACK */ |
301 | deviceinfo = deviceinfo; | |
302 | ||
6f5f21f9 | 303 | if (libusb_init(&usb_context) != 0) { |
a1bb33af UH |
304 | g_warning("Failed to initialize USB."); |
305 | return 0; | |
306 | } | |
a1bb33af | 307 | |
6f5f21f9 | 308 | /* Find all Saleae Logic devices and upload firmware to all of them. */ |
a1bb33af UH |
309 | devcnt = 0; |
310 | libusb_get_device_list(usb_context, &devlist); | |
6f5f21f9 | 311 | for (i = 0; devlist[i]; i++) { |
a1bb33af | 312 | err = libusb_get_device_descriptor(devlist[i], &des); |
6f5f21f9 | 313 | if (err != 0) { |
a1bb33af UH |
314 | g_warning("failed to get device descriptor: %d", err); |
315 | continue; | |
316 | } | |
317 | ||
f6958dab UH |
318 | if (des.idVendor != USB_VENDOR || des.idProduct != USB_PRODUCT) |
319 | continue; /* Not a Saleae Logic... */ | |
a1bb33af | 320 | |
f6958dab UH |
321 | sdi = sigrok_device_instance_new(devcnt, ST_INITIALIZING, |
322 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
323 | if (!sdi) | |
324 | return 0; | |
325 | device_instances = g_slist_append(device_instances, sdi); | |
6f5f21f9 | 326 | |
f6958dab UH |
327 | if (check_conf_profile(devlist[i]) == 0) { |
328 | /* | |
329 | * Continue on the off chance that the device is in a | |
330 | * working state. TODO: Could maybe try a USB reset, | |
331 | * or uploading the firmware again. | |
332 | */ | |
333 | if (upload_firmware(devlist[i]) > 0) | |
fed16f06 UH |
334 | g_warning("firmware upload failed for " |
335 | "device %d", devcnt); | |
a1bb33af | 336 | |
f6958dab | 337 | sdi->usb = usb_device_instance_new |
fed16f06 | 338 | (libusb_get_bus_number(devlist[i]), 0, NULL); |
f6958dab UH |
339 | } else { |
340 | /* Already has the firmware, so fix the new address. */ | |
341 | sdi->usb = usb_device_instance_new | |
342 | (libusb_get_bus_number(devlist[i]), | |
fed16f06 | 343 | libusb_get_device_address(devlist[i]), NULL); |
a1bb33af | 344 | } |
f6958dab | 345 | devcnt++; |
a1bb33af UH |
346 | } |
347 | libusb_free_device_list(devlist, 1); | |
348 | ||
349 | return devcnt; | |
350 | } | |
351 | ||
a1bb33af UH |
352 | static int hw_opendev(int device_index) |
353 | { | |
354 | GTimeVal cur_time; | |
355 | struct sigrok_device_instance *sdi; | |
356 | int timediff, err; | |
357 | unsigned int cur, upd; | |
358 | ||
6f5f21f9 UH |
359 | if (firmware_updated.tv_sec > 0) { |
360 | /* Firmware was recently uploaded. */ | |
a1bb33af UH |
361 | g_get_current_time(&cur_time); |
362 | cur = cur_time.tv_sec * 1000 + cur_time.tv_usec / 1000; | |
6f5f21f9 UH |
363 | upd = firmware_updated.tv_sec * 1000 + |
364 | firmware_updated.tv_usec / 1000; | |
a1bb33af | 365 | timediff = cur - upd; |
6f5f21f9 | 366 | if (timediff < FIRMWARE_RENUM_DELAY) { |
a1bb33af | 367 | timediff = FIRMWARE_RENUM_DELAY - timediff; |
e6ac9ac8 | 368 | g_message("saleae: waiting %d ms for device to reset", |
6f5f21f9 | 369 | timediff); |
a1bb33af UH |
370 | g_usleep(timediff * 1000); |
371 | firmware_updated.tv_sec = 0; | |
372 | } | |
373 | } | |
374 | ||
6f5f21f9 | 375 | if (!(sdi = sl_open_device(device_index))) { |
a1bb33af | 376 | g_warning("unable to open device"); |
e31b636d | 377 | return SIGROK_ERR; |
a1bb33af UH |
378 | } |
379 | ||
380 | err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE); | |
6f5f21f9 | 381 | if (err != 0) { |
a1bb33af | 382 | g_warning("Unable to claim interface: %d", err); |
e31b636d | 383 | return SIGROK_ERR; |
a1bb33af UH |
384 | } |
385 | ||
6f5f21f9 UH |
386 | if (cur_samplerate == 0) { |
387 | /* Samplerate hasn't been set; default to the slowest one. */ | |
388 | if (hw_set_configuration(device_index, HWCAP_SAMPLERATE, | |
fed16f06 | 389 | &supported_samplerates[0]) == SIGROK_ERR) |
e31b636d | 390 | return SIGROK_ERR; |
a1bb33af UH |
391 | } |
392 | ||
393 | return SIGROK_OK; | |
394 | } | |
395 | ||
a1bb33af UH |
396 | static void hw_closedev(int device_index) |
397 | { | |
398 | struct sigrok_device_instance *sdi; | |
399 | ||
6f5f21f9 | 400 | if ((sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af | 401 | close_device(sdi); |
a1bb33af UH |
402 | } |
403 | ||
a1bb33af UH |
404 | static void hw_cleanup(void) |
405 | { | |
406 | GSList *l; | |
407 | ||
6f5f21f9 UH |
408 | /* Properly close all devices... */ |
409 | for (l = device_instances; l; l = l->next) | |
410 | close_device((struct sigrok_device_instance *)l->data); | |
a1bb33af | 411 | |
6f5f21f9 UH |
412 | /* ...and free all their memory. */ |
413 | for (l = device_instances; l; l = l->next) | |
a1bb33af UH |
414 | g_free(l->data); |
415 | g_slist_free(device_instances); | |
416 | device_instances = NULL; | |
417 | ||
6f5f21f9 | 418 | if (usb_context) |
a1bb33af UH |
419 | libusb_exit(usb_context); |
420 | usb_context = NULL; | |
a1bb33af UH |
421 | } |
422 | ||
a1bb33af UH |
423 | static void *hw_get_device_info(int device_index, int device_info_id) |
424 | { | |
425 | struct sigrok_device_instance *sdi; | |
6f5f21f9 | 426 | void *info = NULL; |
a1bb33af | 427 | |
6f5f21f9 | 428 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af UH |
429 | return NULL; |
430 | ||
6f5f21f9 | 431 | switch (device_info_id) { |
a1bb33af UH |
432 | case DI_INSTANCE: |
433 | info = sdi; | |
434 | break; | |
435 | case DI_NUM_PROBES: | |
436 | info = GINT_TO_POINTER(NUM_PROBES); | |
437 | break; | |
438 | case DI_SAMPLERATES: | |
439 | info = &samplerates; | |
440 | break; | |
441 | case DI_TRIGGER_TYPES: | |
442 | info = TRIGGER_TYPES; | |
443 | break; | |
4c100f32 UH |
444 | case DI_CUR_SAMPLERATE: |
445 | info = &cur_samplerate; | |
a1bb33af UH |
446 | break; |
447 | } | |
448 | ||
449 | return info; | |
450 | } | |
451 | ||
a1bb33af UH |
452 | static int hw_get_status(int device_index) |
453 | { | |
454 | struct sigrok_device_instance *sdi; | |
455 | ||
456 | sdi = get_sigrok_device_instance(device_instances, device_index); | |
6f5f21f9 | 457 | if (sdi) |
a1bb33af UH |
458 | return sdi->status; |
459 | else | |
460 | return ST_NOT_FOUND; | |
461 | } | |
462 | ||
a1bb33af UH |
463 | static int *hw_get_capabilities(void) |
464 | { | |
a1bb33af UH |
465 | return capabilities; |
466 | } | |
467 | ||
6f5f21f9 UH |
468 | static int set_configuration_samplerate(struct sigrok_device_instance *sdi, |
469 | uint64_t samplerate) | |
a1bb33af UH |
470 | { |
471 | uint8_t divider; | |
472 | int ret, result, i; | |
473 | unsigned char buf[2]; | |
474 | ||
6f5f21f9 UH |
475 | for (i = 0; supported_samplerates[i]; i++) { |
476 | if (supported_samplerates[i] == samplerate) | |
a1bb33af UH |
477 | break; |
478 | } | |
6f5f21f9 | 479 | if (supported_samplerates[i] == 0) |
e31b636d | 480 | return SIGROK_ERR_SAMPLERATE; |
a1bb33af | 481 | |
eee4890f | 482 | divider = (uint8_t) (48 / (samplerate / 1000000.0)) - 1; |
a1bb33af | 483 | |
e6ac9ac8 | 484 | g_message("saleae: setting samplerate to %" PRIu64 " Hz (divider %d)", |
6f5f21f9 | 485 | samplerate, divider); |
a1bb33af UH |
486 | buf[0] = 0x01; |
487 | buf[1] = divider; | |
6f5f21f9 UH |
488 | ret = libusb_bulk_transfer(sdi->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT, |
489 | buf, 2, &result, 500); | |
490 | if (ret != 0) { | |
a1bb33af | 491 | g_warning("failed to set samplerate: %d", ret); |
e31b636d | 492 | return SIGROK_ERR; |
a1bb33af | 493 | } |
4c100f32 | 494 | cur_samplerate = samplerate; |
a1bb33af UH |
495 | |
496 | return SIGROK_OK; | |
497 | } | |
498 | ||
a1bb33af UH |
499 | static int hw_set_configuration(int device_index, int capability, void *value) |
500 | { | |
501 | struct sigrok_device_instance *sdi; | |
502 | int ret; | |
503 | uint64_t *tmp_u64; | |
504 | ||
6f5f21f9 | 505 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
e31b636d | 506 | return SIGROK_ERR; |
a1bb33af | 507 | |
6f5f21f9 | 508 | if (capability == HWCAP_SAMPLERATE) { |
a1bb33af UH |
509 | tmp_u64 = value; |
510 | ret = set_configuration_samplerate(sdi, *tmp_u64); | |
6f5f21f9 UH |
511 | } else if (capability == HWCAP_PROBECONFIG) { |
512 | ret = configure_probes((GSList *) value); | |
513 | } else if (capability == HWCAP_LIMIT_SAMPLES) { | |
2458ea65 BV |
514 | tmp_u64 = value; |
515 | limit_samples = *tmp_u64; | |
a1bb33af | 516 | ret = SIGROK_OK; |
6f5f21f9 | 517 | } else { |
e31b636d | 518 | ret = SIGROK_ERR; |
6f5f21f9 | 519 | } |
a1bb33af UH |
520 | |
521 | return ret; | |
522 | } | |
523 | ||
a1bb33af UH |
524 | static int receive_data(int fd, int revents, void *user_data) |
525 | { | |
526 | struct timeval tv; | |
527 | ||
afc8e4de UH |
528 | /* QUICK HACK */ |
529 | fd = fd; | |
530 | revents = revents; | |
531 | user_data = user_data; | |
532 | ||
a1bb33af UH |
533 | tv.tv_sec = tv.tv_usec = 0; |
534 | libusb_handle_events_timeout(usb_context, &tv); | |
535 | ||
536 | return TRUE; | |
537 | } | |
538 | ||
a1bb33af UH |
539 | void receive_transfer(struct libusb_transfer *transfer) |
540 | { | |
541 | static int num_samples = 0; | |
542 | static int empty_transfer_count = 0; | |
a1bb33af UH |
543 | struct datafeed_packet packet; |
544 | void *user_data; | |
545 | int cur_buflen, trigger_offset, i; | |
546 | unsigned char *cur_buf, *new_buf; | |
547 | ||
f6958dab UH |
548 | /* hw_stop_acquisition() is telling us to stop. */ |
549 | if (transfer == NULL) | |
a1bb33af | 550 | num_samples = -1; |
a1bb33af | 551 | |
f6958dab UH |
552 | /* |
553 | * If acquisition has already ended, just free any queued up | |
554 | * transfer that come in. | |
555 | */ | |
6f5f21f9 | 556 | if (num_samples == -1) { |
9c48090a BV |
557 | if (transfer) |
558 | libusb_free_transfer(transfer); | |
f6958dab UH |
559 | return; |
560 | } | |
a1bb33af | 561 | |
e6ac9ac8 | 562 | g_message("saleae: receive_transfer(): status %d received %d bytes", |
f6958dab UH |
563 | transfer->status, transfer->actual_length); |
564 | ||
565 | /* Save incoming transfer before reusing the transfer struct. */ | |
566 | cur_buf = transfer->buffer; | |
567 | cur_buflen = transfer->actual_length; | |
568 | user_data = transfer->user_data; | |
569 | ||
570 | /* Fire off a new request. */ | |
571 | new_buf = g_malloc(4096); | |
572 | transfer->buffer = new_buf; | |
573 | transfer->length = 4096; | |
574 | if (libusb_submit_transfer(transfer) != 0) { | |
575 | /* TODO: Stop session? */ | |
576 | g_warning("eek"); | |
577 | } | |
578 | ||
579 | if (cur_buflen == 0) { | |
580 | empty_transfer_count++; | |
581 | if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
582 | /* | |
583 | * The FX2 gave up. End the acquisition, the frontend | |
584 | * will work out that the samplecount is short. | |
585 | */ | |
9c48090a | 586 | hw_stop_acquisition(-1, user_data); |
6f5f21f9 | 587 | } |
f6958dab UH |
588 | return; |
589 | } else { | |
590 | empty_transfer_count = 0; | |
591 | } | |
a1bb33af | 592 | |
f6958dab UH |
593 | trigger_offset = 0; |
594 | if (trigger_stage >= 0) { | |
595 | for (i = 0; i < cur_buflen; i++) { | |
b5698bd7 BV |
596 | |
597 | if ((cur_buf[i] & trigger_mask[trigger_stage]) == trigger_value[trigger_stage]) { | |
598 | /* Match on this trigger stage. */ | |
599 | trigger_buffer[trigger_stage] = cur_buf[i]; | |
600 | trigger_stage++; | |
601 | if (trigger_stage == NUM_TRIGGER_STAGES || trigger_mask[trigger_stage] == 0) { | |
602 | /* Match on all trigger stages, we're done. */ | |
603 | trigger_offset = i + 1; | |
604 | ||
605 | /* | |
606 | * TODO: Send pre-trigger buffer to session bus. | |
607 | * Tell the frontend we hit the trigger here. | |
608 | */ | |
609 | packet.type = DF_TRIGGER; | |
610 | packet.length = 0; | |
611 | session_bus(user_data, &packet); | |
612 | ||
613 | /* | |
614 | * Send the samples that triggered it, since we're | |
615 | * skipping past them. | |
616 | */ | |
4c046c6b | 617 | packet.type = DF_LOGIC; |
b5698bd7 | 618 | packet.length = trigger_stage; |
4c046c6b | 619 | packet.unitsize = 1; |
b5698bd7 BV |
620 | packet.payload = trigger_buffer; |
621 | session_bus(user_data, &packet); | |
622 | ||
623 | trigger_stage = TRIGGER_FIRED; | |
624 | break; | |
625 | } | |
626 | return; | |
627 | } | |
628 | ||
629 | /* | |
630 | * We had a match before, but not in the next sample. However, we may | |
631 | * have a match on this stage in the next bit -- trigger on 0001 will | |
632 | * fail on seeing 00001, so we need to go back to stage 0 -- but at | |
633 | * the next sample from the one that matched originally, which the | |
634 | * counter increment at the end of the loop takes care of. | |
635 | */ | |
636 | if (trigger_stage > 0) { | |
637 | i -= trigger_stage; | |
638 | if (i < -1) | |
639 | i = -1; /* Oops, went back past this buffer. */ | |
640 | /* Reset trigger stage. */ | |
641 | trigger_stage = 0; | |
642 | } | |
643 | ||
644 | ||
a1bb33af | 645 | } |
f6958dab | 646 | } |
a1bb33af | 647 | |
f6958dab UH |
648 | if (trigger_stage == TRIGGER_FIRED) { |
649 | /* Send the incoming transfer to the session bus. */ | |
4c046c6b | 650 | packet.type = DF_LOGIC; |
f6958dab | 651 | packet.length = cur_buflen - trigger_offset; |
4c046c6b | 652 | packet.unitsize = 1; |
f6958dab UH |
653 | packet.payload = cur_buf + trigger_offset; |
654 | session_bus(user_data, &packet); | |
655 | g_free(cur_buf); | |
656 | ||
657 | num_samples += cur_buflen; | |
74b9b438 | 658 | if (limit_samples && (unsigned int) num_samples > limit_samples) { |
9c48090a | 659 | hw_stop_acquisition(-1, user_data); |
a1bb33af | 660 | } |
f6958dab UH |
661 | } else { |
662 | /* | |
663 | * TODO: Buffer pre-trigger data in capture | |
664 | * ratio-sized buffer. | |
665 | */ | |
a1bb33af | 666 | } |
a1bb33af UH |
667 | } |
668 | ||
a1bb33af UH |
669 | static int hw_start_acquisition(int device_index, gpointer session_device_id) |
670 | { | |
671 | struct sigrok_device_instance *sdi; | |
672 | struct datafeed_packet *packet; | |
673 | struct datafeed_header *header; | |
674 | struct libusb_transfer *transfer; | |
675 | const struct libusb_pollfd **lupfd; | |
676 | int size, i; | |
677 | unsigned char *buf; | |
678 | ||
6f5f21f9 | 679 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
e31b636d | 680 | return SIGROK_ERR; |
a1bb33af UH |
681 | |
682 | packet = g_malloc(sizeof(struct datafeed_packet)); | |
683 | header = g_malloc(sizeof(struct datafeed_header)); | |
6f5f21f9 | 684 | if (!packet || !header) |
e31b636d | 685 | return SIGROK_ERR; |
a1bb33af | 686 | |
6f5f21f9 | 687 | /* Start with 2K transfer, subsequently increased to 4K. */ |
a1bb33af | 688 | size = 2048; |
6f5f21f9 | 689 | for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { |
a1bb33af UH |
690 | buf = g_malloc(size); |
691 | transfer = libusb_alloc_transfer(0); | |
6f5f21f9 UH |
692 | libusb_fill_bulk_transfer(transfer, sdi->usb->devhdl, |
693 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
a1bb33af | 694 | receive_transfer, session_device_id, 40); |
6f5f21f9 UH |
695 | if (libusb_submit_transfer(transfer) != 0) { |
696 | /* TODO: Free them all. */ | |
a1bb33af UH |
697 | libusb_free_transfer(transfer); |
698 | g_free(buf); | |
e31b636d | 699 | return SIGROK_ERR; |
a1bb33af UH |
700 | } |
701 | size = 4096; | |
702 | } | |
703 | ||
704 | lupfd = libusb_get_pollfds(usb_context); | |
6f5f21f9 | 705 | for (i = 0; lupfd[i]; i++) |
9c48090a | 706 | source_add(lupfd[i]->fd, lupfd[i]->events, 40, receive_data, |
6f5f21f9 | 707 | NULL); |
a1bb33af UH |
708 | free(lupfd); |
709 | ||
710 | packet->type = DF_HEADER; | |
711 | packet->length = sizeof(struct datafeed_header); | |
6f5f21f9 | 712 | packet->payload = (unsigned char *)header; |
a1bb33af UH |
713 | header->feed_version = 1; |
714 | gettimeofday(&header->starttime, NULL); | |
4c100f32 | 715 | header->samplerate = cur_samplerate; |
a1bb33af | 716 | header->protocol_id = PROTO_RAW; |
c2616fb9 DR |
717 | header->num_logic_probes = NUM_PROBES; |
718 | header->num_analog_probes = 0; | |
a1bb33af UH |
719 | session_bus(session_device_id, packet); |
720 | g_free(header); | |
721 | g_free(packet); | |
722 | ||
723 | return SIGROK_OK; | |
724 | } | |
725 | ||
6f5f21f9 | 726 | /* This stops acquisition on ALL devices, ignoring device_index. */ |
a1bb33af UH |
727 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) |
728 | { | |
729 | struct datafeed_packet packet; | |
730 | ||
afc8e4de UH |
731 | /* QUICK HACK */ |
732 | device_index = device_index; | |
733 | ||
a1bb33af UH |
734 | packet.type = DF_END; |
735 | session_bus(session_device_id, &packet); | |
736 | ||
737 | receive_transfer(NULL); | |
738 | ||
6f5f21f9 | 739 | /* TODO: Need to cancel and free any queued up transfers. */ |
a1bb33af UH |
740 | } |
741 | ||
a1bb33af UH |
742 | struct device_plugin saleae_logic_plugin_info = { |
743 | "saleae-logic", | |
744 | 1, | |
745 | hw_init, | |
746 | hw_cleanup, | |
747 | ||
748 | hw_opendev, | |
749 | hw_closedev, | |
750 | hw_get_device_info, | |
751 | hw_get_status, | |
752 | hw_get_capabilities, | |
753 | hw_set_configuration, | |
754 | hw_start_acquisition, | |
6f5f21f9 | 755 | hw_stop_acquisition, |
a1bb33af | 756 | }; |