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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 | |
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" | |
e65679b1 | 40 | #define FIRMWARE FIRMWARE_DIR "/saleae-logic.fw" |
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 | 46 | |
fed16f06 | 47 | /* Software trigger implementation: positive values indicate trigger stage. */ |
a1bb33af UH |
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 | */ | |
afc8e4de | 69 | GTimeVal firmware_updated = { 0, 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 }; | |
fed16f06 | 101 | |
a1bb33af UH |
102 | int trigger_stage = TRIGGER_FIRED; |
103 | ||
a1bb33af | 104 | static int hw_set_configuration(int device_index, int capability, void *value); |
9c48090a | 105 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); |
a1bb33af | 106 | |
28fc6de0 UH |
107 | /** |
108 | * Check the USB configuration to determine if this is a Saleae Logic. | |
109 | * | |
110 | * @return 1 if the device's configuration profile match the Logic firmware's | |
111 | * configuration, 0 otherwise. | |
a1bb33af UH |
112 | */ |
113 | int check_conf_profile(libusb_device *dev) | |
114 | { | |
115 | struct libusb_device_descriptor des; | |
6f5f21f9 | 116 | struct libusb_config_descriptor *conf_dsc = NULL; |
a1bb33af | 117 | const struct libusb_interface_descriptor *intf_dsc; |
6f5f21f9 | 118 | int ret = -1; |
a1bb33af | 119 | |
6f5f21f9 UH |
120 | while (ret == -1) { |
121 | /* Assume it's not a Saleae Logic unless proven wrong. */ | |
a1bb33af UH |
122 | ret = 0; |
123 | ||
6f5f21f9 | 124 | if (libusb_get_device_descriptor(dev, &des) != 0) |
a1bb33af UH |
125 | break; |
126 | ||
6f5f21f9 UH |
127 | if (des.bNumConfigurations != 1) |
128 | /* Need exactly 1 configuration. */ | |
a1bb33af UH |
129 | break; |
130 | ||
6f5f21f9 | 131 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) |
a1bb33af UH |
132 | break; |
133 | ||
6f5f21f9 UH |
134 | if (conf_dsc->bNumInterfaces != 1) |
135 | /* Need exactly 1 interface. */ | |
a1bb33af UH |
136 | break; |
137 | ||
6f5f21f9 UH |
138 | if (conf_dsc->interface[0].num_altsetting != 1) |
139 | /* Need just one alternate setting. */ | |
a1bb33af UH |
140 | break; |
141 | ||
142 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
6f5f21f9 UH |
143 | if (intf_dsc->bNumEndpoints != 2) |
144 | /* Need 2 endpoints. */ | |
a1bb33af UH |
145 | break; |
146 | ||
6f5f21f9 UH |
147 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != |
148 | (1 | LIBUSB_ENDPOINT_OUT)) | |
149 | /* First endpoint should be 1 (outbound). */ | |
a1bb33af UH |
150 | break; |
151 | ||
6f5f21f9 UH |
152 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != |
153 | (2 | LIBUSB_ENDPOINT_IN)) | |
154 | /* First endpoint should be 2 (inbound). */ | |
a1bb33af UH |
155 | break; |
156 | ||
6f5f21f9 | 157 | /* If we made it here, it must be a Saleae Logic. */ |
a1bb33af UH |
158 | ret = 1; |
159 | } | |
6f5f21f9 UH |
160 | |
161 | if (conf_dsc) | |
a1bb33af UH |
162 | libusb_free_config_descriptor(conf_dsc); |
163 | ||
164 | return ret; | |
165 | } | |
166 | ||
a1bb33af UH |
167 | struct sigrok_device_instance *sl_open_device(int device_index) |
168 | { | |
169 | struct sigrok_device_instance *sdi; | |
170 | libusb_device **devlist; | |
171 | struct libusb_device_descriptor des; | |
172 | int err, skip, i; | |
173 | ||
6f5f21f9 | 174 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af UH |
175 | return NULL; |
176 | ||
177 | libusb_get_device_list(usb_context, &devlist); | |
6f5f21f9 UH |
178 | if (sdi->status == ST_INITIALIZING) { |
179 | /* | |
180 | * This device was renumerating last time we touched it. | |
181 | * opendev() guarantees we've waited long enough for it to | |
182 | * have booted properly, so now we need to find it on | |
a1bb33af UH |
183 | * the bus and record its new address. |
184 | */ | |
185 | skip = 0; | |
6f5f21f9 | 186 | for (i = 0; devlist[i]; i++) { |
90429916 UH |
187 | /* TODO: Error handling. */ |
188 | err = opendev2(device_index, &sdi, devlist[i], &des, | |
5e59f476 UH |
189 | &skip, USB_VENDOR, USB_PRODUCT, |
190 | USB_INTERFACE); | |
a1bb33af | 191 | } |
6f5f21f9 UH |
192 | } else if (sdi->status == ST_INACTIVE) { |
193 | /* | |
194 | * This device is fully enumerated, so we need to find this | |
195 | * device by vendor, product, bus and address. | |
196 | */ | |
a1bb33af | 197 | libusb_get_device_list(usb_context, &devlist); |
6f5f21f9 | 198 | for (i = 0; devlist[i]; i++) { |
90429916 | 199 | /* TODO: Error handling. */ |
5e59f476 UH |
200 | err = opendev3(&sdi, devlist[i], &des, USB_VENDOR, |
201 | USB_PRODUCT, USB_INTERFACE); | |
a1bb33af | 202 | } |
6f5f21f9 UH |
203 | } else { |
204 | /* Status must be ST_ACTIVE, i.e. already in use... */ | |
a1bb33af UH |
205 | sdi = NULL; |
206 | } | |
207 | libusb_free_device_list(devlist, 1); | |
208 | ||
6f5f21f9 | 209 | if (sdi && sdi->status != ST_ACTIVE) |
a1bb33af UH |
210 | sdi = NULL; |
211 | ||
212 | return sdi; | |
213 | } | |
214 | ||
a1bb33af UH |
215 | int upload_firmware(libusb_device *dev) |
216 | { | |
edf60d05 | 217 | int ret; |
a1bb33af | 218 | |
08cfe6a2 UH |
219 | ret = ezusb_upload_firmware(dev, USB_CONFIGURATION, FIRMWARE); |
220 | if (ret != 0) | |
a1bb33af UH |
221 | return 1; |
222 | ||
6f5f21f9 | 223 | /* Remember when the last firmware update was done. */ |
a1bb33af UH |
224 | g_get_current_time(&firmware_updated); |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
a1bb33af UH |
229 | static void close_device(struct sigrok_device_instance *sdi) |
230 | { | |
f6958dab UH |
231 | if (sdi->usb->devhdl == NULL) |
232 | return; | |
233 | ||
234 | g_message("closing device %d on %d.%d interface %d", sdi->index, | |
235 | sdi->usb->bus, sdi->usb->address, USB_INTERFACE); | |
236 | libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE); | |
237 | libusb_close(sdi->usb->devhdl); | |
238 | sdi->usb->devhdl = NULL; | |
239 | sdi->status = ST_INACTIVE; | |
a1bb33af UH |
240 | } |
241 | ||
fed16f06 | 242 | static int configure_probes(GSList *probes) |
a1bb33af UH |
243 | { |
244 | struct probe *probe; | |
245 | GSList *l; | |
246 | int probe_bit, stage, i; | |
247 | char *tc; | |
248 | ||
249 | probe_mask = 0; | |
6f5f21f9 | 250 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { |
a1bb33af UH |
251 | trigger_mask[i] = 0; |
252 | trigger_value[i] = 0; | |
253 | } | |
254 | ||
255 | stage = -1; | |
6f5f21f9 UH |
256 | for (l = probes; l; l = l->next) { |
257 | probe = (struct probe *)l->data; | |
258 | if (probe->enabled == FALSE) | |
a1bb33af UH |
259 | continue; |
260 | probe_bit = 1 << (probe->index - 1); | |
261 | probe_mask |= probe_bit; | |
6f5f21f9 | 262 | if (probe->trigger) { |
a1bb33af | 263 | stage = 0; |
6f5f21f9 | 264 | for (tc = probe->trigger; *tc; tc++) { |
a1bb33af | 265 | trigger_mask[stage] |= probe_bit; |
6f5f21f9 | 266 | if (*tc == '1') |
a1bb33af UH |
267 | trigger_value[stage] |= probe_bit; |
268 | stage++; | |
6f5f21f9 | 269 | if (stage > NUM_TRIGGER_STAGES) |
e31b636d | 270 | return SIGROK_ERR; |
a1bb33af UH |
271 | } |
272 | } | |
273 | } | |
274 | ||
6f5f21f9 UH |
275 | if (stage == -1) |
276 | /* | |
277 | * We didn't configure any triggers, make sure acquisition | |
278 | * doesn't wait for any. | |
279 | */ | |
a1bb33af UH |
280 | trigger_stage = TRIGGER_FIRED; |
281 | else | |
282 | trigger_stage = 0; | |
283 | ||
284 | return SIGROK_OK; | |
285 | } | |
286 | ||
a1bb33af UH |
287 | /* |
288 | * API callbacks | |
289 | */ | |
290 | ||
291 | static int hw_init(char *deviceinfo) | |
292 | { | |
293 | struct sigrok_device_instance *sdi; | |
294 | struct libusb_device_descriptor des; | |
295 | libusb_device **devlist; | |
296 | int err, devcnt, i; | |
297 | ||
afc8e4de UH |
298 | /* QUICK HACK */ |
299 | deviceinfo = deviceinfo; | |
300 | ||
6f5f21f9 | 301 | if (libusb_init(&usb_context) != 0) { |
a1bb33af UH |
302 | g_warning("Failed to initialize USB."); |
303 | return 0; | |
304 | } | |
305 | libusb_set_debug(usb_context, 3); | |
306 | ||
6f5f21f9 | 307 | /* Find all Saleae Logic devices and upload firmware to all of them. */ |
a1bb33af UH |
308 | devcnt = 0; |
309 | libusb_get_device_list(usb_context, &devlist); | |
6f5f21f9 | 310 | for (i = 0; devlist[i]; i++) { |
a1bb33af | 311 | err = libusb_get_device_descriptor(devlist[i], &des); |
6f5f21f9 | 312 | if (err != 0) { |
a1bb33af UH |
313 | g_warning("failed to get device descriptor: %d", err); |
314 | continue; | |
315 | } | |
316 | ||
f6958dab UH |
317 | if (des.idVendor != USB_VENDOR || des.idProduct != USB_PRODUCT) |
318 | continue; /* Not a Saleae Logic... */ | |
a1bb33af | 319 | |
f6958dab UH |
320 | sdi = sigrok_device_instance_new(devcnt, ST_INITIALIZING, |
321 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
322 | if (!sdi) | |
323 | return 0; | |
324 | device_instances = g_slist_append(device_instances, sdi); | |
6f5f21f9 | 325 | |
f6958dab UH |
326 | if (check_conf_profile(devlist[i]) == 0) { |
327 | /* | |
328 | * Continue on the off chance that the device is in a | |
329 | * working state. TODO: Could maybe try a USB reset, | |
330 | * or uploading the firmware again. | |
331 | */ | |
332 | if (upload_firmware(devlist[i]) > 0) | |
fed16f06 UH |
333 | g_warning("firmware upload failed for " |
334 | "device %d", devcnt); | |
a1bb33af | 335 | |
f6958dab | 336 | sdi->usb = usb_device_instance_new |
fed16f06 | 337 | (libusb_get_bus_number(devlist[i]), 0, NULL); |
f6958dab UH |
338 | } else { |
339 | /* Already has the firmware, so fix the new address. */ | |
340 | sdi->usb = usb_device_instance_new | |
341 | (libusb_get_bus_number(devlist[i]), | |
fed16f06 | 342 | libusb_get_device_address(devlist[i]), NULL); |
a1bb33af | 343 | } |
f6958dab | 344 | devcnt++; |
a1bb33af UH |
345 | } |
346 | libusb_free_device_list(devlist, 1); | |
347 | ||
348 | return devcnt; | |
349 | } | |
350 | ||
a1bb33af UH |
351 | static int hw_opendev(int device_index) |
352 | { | |
353 | GTimeVal cur_time; | |
354 | struct sigrok_device_instance *sdi; | |
355 | int timediff, err; | |
356 | unsigned int cur, upd; | |
357 | ||
6f5f21f9 UH |
358 | if (firmware_updated.tv_sec > 0) { |
359 | /* Firmware was recently uploaded. */ | |
a1bb33af UH |
360 | g_get_current_time(&cur_time); |
361 | cur = cur_time.tv_sec * 1000 + cur_time.tv_usec / 1000; | |
6f5f21f9 UH |
362 | upd = firmware_updated.tv_sec * 1000 + |
363 | firmware_updated.tv_usec / 1000; | |
a1bb33af | 364 | timediff = cur - upd; |
6f5f21f9 | 365 | if (timediff < FIRMWARE_RENUM_DELAY) { |
a1bb33af | 366 | timediff = FIRMWARE_RENUM_DELAY - timediff; |
6f5f21f9 UH |
367 | g_message("waiting %d ms for device to reset", |
368 | timediff); | |
a1bb33af UH |
369 | g_usleep(timediff * 1000); |
370 | firmware_updated.tv_sec = 0; | |
371 | } | |
372 | } | |
373 | ||
6f5f21f9 | 374 | if (!(sdi = sl_open_device(device_index))) { |
a1bb33af | 375 | g_warning("unable to open device"); |
e31b636d | 376 | return SIGROK_ERR; |
a1bb33af UH |
377 | } |
378 | ||
379 | err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE); | |
6f5f21f9 | 380 | if (err != 0) { |
a1bb33af | 381 | g_warning("Unable to claim interface: %d", err); |
e31b636d | 382 | return SIGROK_ERR; |
a1bb33af UH |
383 | } |
384 | ||
6f5f21f9 UH |
385 | if (cur_samplerate == 0) { |
386 | /* Samplerate hasn't been set; default to the slowest one. */ | |
387 | if (hw_set_configuration(device_index, HWCAP_SAMPLERATE, | |
fed16f06 | 388 | &supported_samplerates[0]) == SIGROK_ERR) |
e31b636d | 389 | return SIGROK_ERR; |
a1bb33af UH |
390 | } |
391 | ||
392 | return SIGROK_OK; | |
393 | } | |
394 | ||
a1bb33af UH |
395 | static void hw_closedev(int device_index) |
396 | { | |
397 | struct sigrok_device_instance *sdi; | |
398 | ||
6f5f21f9 | 399 | if ((sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af | 400 | close_device(sdi); |
a1bb33af UH |
401 | } |
402 | ||
a1bb33af UH |
403 | static void hw_cleanup(void) |
404 | { | |
405 | GSList *l; | |
406 | ||
6f5f21f9 UH |
407 | /* Properly close all devices... */ |
408 | for (l = device_instances; l; l = l->next) | |
409 | close_device((struct sigrok_device_instance *)l->data); | |
a1bb33af | 410 | |
6f5f21f9 UH |
411 | /* ...and free all their memory. */ |
412 | for (l = device_instances; l; l = l->next) | |
a1bb33af UH |
413 | g_free(l->data); |
414 | g_slist_free(device_instances); | |
415 | device_instances = NULL; | |
416 | ||
6f5f21f9 | 417 | if (usb_context) |
a1bb33af UH |
418 | libusb_exit(usb_context); |
419 | usb_context = NULL; | |
a1bb33af UH |
420 | } |
421 | ||
a1bb33af UH |
422 | static void *hw_get_device_info(int device_index, int device_info_id) |
423 | { | |
424 | struct sigrok_device_instance *sdi; | |
6f5f21f9 | 425 | void *info = NULL; |
a1bb33af | 426 | |
6f5f21f9 | 427 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
a1bb33af UH |
428 | return NULL; |
429 | ||
6f5f21f9 | 430 | switch (device_info_id) { |
a1bb33af UH |
431 | case DI_INSTANCE: |
432 | info = sdi; | |
433 | break; | |
434 | case DI_NUM_PROBES: | |
435 | info = GINT_TO_POINTER(NUM_PROBES); | |
436 | break; | |
437 | case DI_SAMPLERATES: | |
438 | info = &samplerates; | |
439 | break; | |
440 | case DI_TRIGGER_TYPES: | |
441 | info = TRIGGER_TYPES; | |
442 | break; | |
4c100f32 UH |
443 | case DI_CUR_SAMPLERATE: |
444 | info = &cur_samplerate; | |
a1bb33af UH |
445 | break; |
446 | } | |
447 | ||
448 | return info; | |
449 | } | |
450 | ||
a1bb33af UH |
451 | static int hw_get_status(int device_index) |
452 | { | |
453 | struct sigrok_device_instance *sdi; | |
454 | ||
455 | sdi = get_sigrok_device_instance(device_instances, device_index); | |
6f5f21f9 | 456 | if (sdi) |
a1bb33af UH |
457 | return sdi->status; |
458 | else | |
459 | return ST_NOT_FOUND; | |
460 | } | |
461 | ||
a1bb33af UH |
462 | static int *hw_get_capabilities(void) |
463 | { | |
a1bb33af UH |
464 | return capabilities; |
465 | } | |
466 | ||
6f5f21f9 UH |
467 | static int set_configuration_samplerate(struct sigrok_device_instance *sdi, |
468 | uint64_t samplerate) | |
a1bb33af UH |
469 | { |
470 | uint8_t divider; | |
471 | int ret, result, i; | |
472 | unsigned char buf[2]; | |
473 | ||
6f5f21f9 UH |
474 | for (i = 0; supported_samplerates[i]; i++) { |
475 | if (supported_samplerates[i] == samplerate) | |
a1bb33af UH |
476 | break; |
477 | } | |
6f5f21f9 | 478 | if (supported_samplerates[i] == 0) |
e31b636d | 479 | return SIGROK_ERR_SAMPLERATE; |
a1bb33af | 480 | |
eee4890f | 481 | divider = (uint8_t) (48 / (samplerate / 1000000.0)) - 1; |
a1bb33af | 482 | |
6f5f21f9 UH |
483 | g_message("setting samplerate to %" PRIu64 " Hz (divider %d)", |
484 | samplerate, divider); | |
a1bb33af UH |
485 | buf[0] = 0x01; |
486 | buf[1] = divider; | |
6f5f21f9 UH |
487 | ret = libusb_bulk_transfer(sdi->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT, |
488 | buf, 2, &result, 500); | |
489 | if (ret != 0) { | |
a1bb33af | 490 | g_warning("failed to set samplerate: %d", ret); |
e31b636d | 491 | return SIGROK_ERR; |
a1bb33af | 492 | } |
4c100f32 | 493 | cur_samplerate = samplerate; |
a1bb33af UH |
494 | |
495 | return SIGROK_OK; | |
496 | } | |
497 | ||
a1bb33af UH |
498 | static int hw_set_configuration(int device_index, int capability, void *value) |
499 | { | |
500 | struct sigrok_device_instance *sdi; | |
501 | int ret; | |
502 | uint64_t *tmp_u64; | |
503 | ||
6f5f21f9 | 504 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
e31b636d | 505 | return SIGROK_ERR; |
a1bb33af | 506 | |
6f5f21f9 | 507 | if (capability == HWCAP_SAMPLERATE) { |
a1bb33af UH |
508 | tmp_u64 = value; |
509 | ret = set_configuration_samplerate(sdi, *tmp_u64); | |
6f5f21f9 UH |
510 | } else if (capability == HWCAP_PROBECONFIG) { |
511 | ret = configure_probes((GSList *) value); | |
512 | } else if (capability == HWCAP_LIMIT_SAMPLES) { | |
a1bb33af UH |
513 | limit_samples = strtoull(value, NULL, 10); |
514 | ret = SIGROK_OK; | |
6f5f21f9 | 515 | } else { |
e31b636d | 516 | ret = SIGROK_ERR; |
6f5f21f9 | 517 | } |
a1bb33af UH |
518 | |
519 | return ret; | |
520 | } | |
521 | ||
a1bb33af UH |
522 | static int receive_data(int fd, int revents, void *user_data) |
523 | { | |
524 | struct timeval tv; | |
525 | ||
afc8e4de UH |
526 | /* QUICK HACK */ |
527 | fd = fd; | |
528 | revents = revents; | |
529 | user_data = user_data; | |
530 | ||
a1bb33af UH |
531 | tv.tv_sec = tv.tv_usec = 0; |
532 | libusb_handle_events_timeout(usb_context, &tv); | |
533 | ||
534 | return TRUE; | |
535 | } | |
536 | ||
afc8e4de | 537 | static void trigger_helper(int i, unsigned char *cur_buf, |
08cfe6a2 UH |
538 | struct datafeed_packet *packet, void *user_data, |
539 | int *trigger_offset) | |
540 | { | |
541 | if ((cur_buf[i] & trigger_mask[trigger_stage]) | |
542 | == trigger_value[trigger_stage]) { | |
543 | /* Match on this trigger stage. */ | |
544 | trigger_buffer[trigger_stage] = cur_buf[i]; | |
545 | trigger_stage++; | |
546 | if (trigger_stage == NUM_TRIGGER_STAGES | |
547 | || trigger_mask[trigger_stage] == 0) { | |
548 | /* Match on all trigger stages, we're done. */ | |
549 | *trigger_offset = i + 1; | |
550 | ||
551 | /* | |
552 | * TODO: Send pre-trigger buffer to session bus. | |
553 | * Tell the frontend we hit the trigger here. | |
554 | */ | |
555 | packet->type = DF_TRIGGER; | |
556 | packet->length = 0; | |
557 | session_bus(user_data, packet); | |
558 | ||
559 | /* | |
560 | * Send the samples that triggered it, since we're | |
561 | * skipping past them. | |
562 | */ | |
563 | packet->type = DF_LOGIC8; | |
564 | packet->length = trigger_stage; | |
565 | packet->payload = trigger_buffer; | |
566 | session_bus(user_data, packet); | |
567 | // break; // FIXME??? | |
568 | ||
569 | trigger_stage = TRIGGER_FIRED; | |
570 | } | |
571 | return; | |
572 | } | |
573 | ||
574 | /* | |
575 | * We had a match before, but not in the next sample. However, we may | |
576 | * have a match on this stage in the next bit -- trigger on 0001 will | |
577 | * fail on seeing 00001, so we need to go back to stage 0 -- but at | |
578 | * the next sample from the one that matched originally, which the | |
579 | * counter increment at the end of the loop takes care of. | |
580 | */ | |
581 | if (trigger_stage > 0) { | |
582 | i -= trigger_stage; | |
583 | if (i < -1) | |
584 | i = -1; /* Oops, went back past this buffer. */ | |
585 | /* Reset trigger stage. */ | |
586 | trigger_stage = 0; | |
587 | } | |
588 | } | |
589 | ||
a1bb33af UH |
590 | void receive_transfer(struct libusb_transfer *transfer) |
591 | { | |
592 | static int num_samples = 0; | |
593 | static int empty_transfer_count = 0; | |
a1bb33af UH |
594 | struct datafeed_packet packet; |
595 | void *user_data; | |
596 | int cur_buflen, trigger_offset, i; | |
597 | unsigned char *cur_buf, *new_buf; | |
598 | ||
f6958dab UH |
599 | /* hw_stop_acquisition() is telling us to stop. */ |
600 | if (transfer == NULL) | |
a1bb33af | 601 | num_samples = -1; |
a1bb33af | 602 | |
f6958dab UH |
603 | /* |
604 | * If acquisition has already ended, just free any queued up | |
605 | * transfer that come in. | |
606 | */ | |
6f5f21f9 | 607 | if (num_samples == -1) { |
9c48090a BV |
608 | if (transfer) |
609 | libusb_free_transfer(transfer); | |
f6958dab UH |
610 | return; |
611 | } | |
a1bb33af | 612 | |
f6958dab UH |
613 | g_message("receive_transfer(): status %d received %d bytes", |
614 | transfer->status, transfer->actual_length); | |
615 | ||
616 | /* Save incoming transfer before reusing the transfer struct. */ | |
617 | cur_buf = transfer->buffer; | |
618 | cur_buflen = transfer->actual_length; | |
619 | user_data = transfer->user_data; | |
620 | ||
621 | /* Fire off a new request. */ | |
622 | new_buf = g_malloc(4096); | |
623 | transfer->buffer = new_buf; | |
624 | transfer->length = 4096; | |
625 | if (libusb_submit_transfer(transfer) != 0) { | |
626 | /* TODO: Stop session? */ | |
627 | g_warning("eek"); | |
628 | } | |
629 | ||
630 | if (cur_buflen == 0) { | |
631 | empty_transfer_count++; | |
632 | if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
633 | /* | |
634 | * The FX2 gave up. End the acquisition, the frontend | |
635 | * will work out that the samplecount is short. | |
636 | */ | |
9c48090a | 637 | hw_stop_acquisition(-1, user_data); |
6f5f21f9 | 638 | } |
f6958dab UH |
639 | return; |
640 | } else { | |
641 | empty_transfer_count = 0; | |
642 | } | |
a1bb33af | 643 | |
f6958dab UH |
644 | trigger_offset = 0; |
645 | if (trigger_stage >= 0) { | |
646 | for (i = 0; i < cur_buflen; i++) { | |
afc8e4de UH |
647 | trigger_helper(i, cur_buf, &packet, user_data, |
648 | &trigger_offset); | |
a1bb33af | 649 | } |
f6958dab | 650 | } |
a1bb33af | 651 | |
f6958dab UH |
652 | if (trigger_stage == TRIGGER_FIRED) { |
653 | /* Send the incoming transfer to the session bus. */ | |
654 | packet.type = DF_LOGIC8; | |
655 | packet.length = cur_buflen - trigger_offset; | |
656 | packet.payload = cur_buf + trigger_offset; | |
657 | session_bus(user_data, &packet); | |
658 | g_free(cur_buf); | |
659 | ||
660 | num_samples += cur_buflen; | |
afc8e4de | 661 | if ((unsigned int)num_samples > limit_samples) { |
9c48090a | 662 | hw_stop_acquisition(-1, user_data); |
a1bb33af | 663 | } |
f6958dab UH |
664 | } else { |
665 | /* | |
666 | * TODO: Buffer pre-trigger data in capture | |
667 | * ratio-sized buffer. | |
668 | */ | |
a1bb33af | 669 | } |
a1bb33af UH |
670 | } |
671 | ||
a1bb33af UH |
672 | static int hw_start_acquisition(int device_index, gpointer session_device_id) |
673 | { | |
674 | struct sigrok_device_instance *sdi; | |
675 | struct datafeed_packet *packet; | |
676 | struct datafeed_header *header; | |
677 | struct libusb_transfer *transfer; | |
678 | const struct libusb_pollfd **lupfd; | |
679 | int size, i; | |
680 | unsigned char *buf; | |
681 | ||
6f5f21f9 | 682 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) |
e31b636d | 683 | return SIGROK_ERR; |
a1bb33af UH |
684 | |
685 | packet = g_malloc(sizeof(struct datafeed_packet)); | |
686 | header = g_malloc(sizeof(struct datafeed_header)); | |
6f5f21f9 | 687 | if (!packet || !header) |
e31b636d | 688 | return SIGROK_ERR; |
a1bb33af | 689 | |
6f5f21f9 | 690 | /* Start with 2K transfer, subsequently increased to 4K. */ |
a1bb33af | 691 | size = 2048; |
6f5f21f9 | 692 | for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { |
a1bb33af UH |
693 | buf = g_malloc(size); |
694 | transfer = libusb_alloc_transfer(0); | |
6f5f21f9 UH |
695 | libusb_fill_bulk_transfer(transfer, sdi->usb->devhdl, |
696 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
a1bb33af | 697 | receive_transfer, session_device_id, 40); |
6f5f21f9 UH |
698 | if (libusb_submit_transfer(transfer) != 0) { |
699 | /* TODO: Free them all. */ | |
a1bb33af UH |
700 | libusb_free_transfer(transfer); |
701 | g_free(buf); | |
e31b636d | 702 | return SIGROK_ERR; |
a1bb33af UH |
703 | } |
704 | size = 4096; | |
705 | } | |
706 | ||
707 | lupfd = libusb_get_pollfds(usb_context); | |
6f5f21f9 | 708 | for (i = 0; lupfd[i]; i++) |
9c48090a | 709 | source_add(lupfd[i]->fd, lupfd[i]->events, 40, receive_data, |
6f5f21f9 | 710 | NULL); |
a1bb33af UH |
711 | free(lupfd); |
712 | ||
713 | packet->type = DF_HEADER; | |
714 | packet->length = sizeof(struct datafeed_header); | |
6f5f21f9 | 715 | packet->payload = (unsigned char *)header; |
a1bb33af UH |
716 | header->feed_version = 1; |
717 | gettimeofday(&header->starttime, NULL); | |
4c100f32 | 718 | header->samplerate = cur_samplerate; |
a1bb33af UH |
719 | header->protocol_id = PROTO_RAW; |
720 | header->num_probes = NUM_PROBES; | |
721 | session_bus(session_device_id, packet); | |
722 | g_free(header); | |
723 | g_free(packet); | |
724 | ||
725 | return SIGROK_OK; | |
726 | } | |
727 | ||
6f5f21f9 | 728 | /* This stops acquisition on ALL devices, ignoring device_index. */ |
a1bb33af UH |
729 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) |
730 | { | |
731 | struct datafeed_packet packet; | |
732 | ||
afc8e4de UH |
733 | /* QUICK HACK */ |
734 | device_index = device_index; | |
735 | ||
a1bb33af UH |
736 | packet.type = DF_END; |
737 | session_bus(session_device_id, &packet); | |
738 | ||
739 | receive_transfer(NULL); | |
740 | ||
6f5f21f9 | 741 | /* TODO: Need to cancel and free any queued up transfers. */ |
a1bb33af UH |
742 | } |
743 | ||
a1bb33af UH |
744 | struct device_plugin saleae_logic_plugin_info = { |
745 | "saleae-logic", | |
746 | 1, | |
747 | hw_init, | |
748 | hw_cleanup, | |
749 | ||
750 | hw_opendev, | |
751 | hw_closedev, | |
752 | hw_get_device_info, | |
753 | hw_get_status, | |
754 | hw_get_capabilities, | |
755 | hw_set_configuration, | |
756 | hw_start_acquisition, | |
6f5f21f9 | 757 | hw_stop_acquisition, |
a1bb33af | 758 | }; |