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f302a082 JH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
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> | |
8b35f474 | 22 | #include <inttypes.h> |
187b3582 JH |
23 | #include <glib.h> |
24 | #include <libusb.h> | |
f302a082 JH |
25 | #include "config.h" |
26 | #include "sigrok.h" | |
27 | #include "sigrok-internal.h" | |
28 | #include "fx2lafw.h" | |
f6582cd7 | 29 | #include "command.h" |
f302a082 | 30 | |
187b3582 JH |
31 | static struct fx2lafw_profile supported_fx2[] = { |
32 | /* USBee AX */ | |
33 | { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, 8 }, | |
34 | { 0, 0, 0, 0, 0, 0 } | |
35 | }; | |
36 | ||
8b35f474 JH |
37 | static int fx2lafw_capabilities[] = { |
38 | SR_HWCAP_LOGIC_ANALYZER, | |
39 | SR_HWCAP_SAMPLERATE, | |
40 | ||
41 | /* These are really implemented in the driver, not the hardware. */ | |
42 | SR_HWCAP_LIMIT_SAMPLES, | |
43 | SR_HWCAP_CONTINUOUS, | |
772a0e61 | 44 | 0, |
8b35f474 JH |
45 | }; |
46 | ||
47 | static const char *fx2lafw_probe_names[] = { | |
48 | "D0", | |
49 | "D1", | |
50 | "D2", | |
51 | "D3", | |
52 | "D4", | |
53 | "D5", | |
54 | "D6", | |
55 | "D7", | |
772a0e61 | 56 | NULL, |
8b35f474 JH |
57 | }; |
58 | ||
59 | static uint64_t fx2lafw_supported_samplerates[] = { | |
60 | SR_MHZ(1), | |
61 | SR_MHZ(2), | |
62 | SR_MHZ(3), | |
63 | SR_MHZ(4), | |
64 | SR_MHZ(6), | |
65 | SR_MHZ(8), | |
66 | SR_MHZ(12), | |
67 | SR_MHZ(16), | |
772a0e61 | 68 | SR_MHZ(24), |
8b35f474 JH |
69 | }; |
70 | ||
71 | static struct sr_samplerates fx2lafw_samplerates = { | |
72 | SR_MHZ(1), | |
73 | SR_MHZ(24), | |
74 | SR_HZ(0), | |
772a0e61 | 75 | fx2lafw_supported_samplerates, |
8b35f474 JH |
76 | }; |
77 | ||
cac0bbaa | 78 | static GSList *dev_insts = NULL; |
187b3582 JH |
79 | static libusb_context *usb_context = NULL; |
80 | ||
1f9813eb | 81 | static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id); |
610dbb70 | 82 | |
b1eeb67e JH |
83 | /** |
84 | * Check the USB configuration to determine if this is an fx2lafw device. | |
85 | * | |
f9a69557 UH |
86 | * @return TRUE if the device's configuration profile match fx2lafw |
87 | * configuration, FALSE otherwise. | |
b1eeb67e | 88 | */ |
f9a69557 | 89 | static gboolean check_conf_profile(libusb_device *dev) |
b1eeb67e JH |
90 | { |
91 | struct libusb_device_descriptor des; | |
92 | struct libusb_config_descriptor *conf_dsc = NULL; | |
93 | const struct libusb_interface_descriptor *intf_dsc; | |
f9a69557 | 94 | gboolean ret = FALSE; |
b1eeb67e JH |
95 | |
96 | while (!ret) { | |
97 | /* Assume it's not a Saleae Logic unless proven wrong. */ | |
98 | ret = 0; | |
99 | ||
100 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
101 | break; | |
102 | ||
103 | if (des.bNumConfigurations != 1) | |
104 | /* Need exactly 1 configuration. */ | |
105 | break; | |
106 | ||
107 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) | |
108 | break; | |
109 | ||
110 | if (conf_dsc->bNumInterfaces != 1) | |
111 | /* Need exactly 1 interface. */ | |
112 | break; | |
113 | ||
114 | if (conf_dsc->interface[0].num_altsetting != 1) | |
115 | /* Need just one alternate setting. */ | |
116 | break; | |
117 | ||
118 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
119 | if (intf_dsc->bNumEndpoints != 3) | |
120 | /* Need exactly 3 end points. */ | |
121 | break; | |
122 | ||
123 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != | |
124 | (1 | LIBUSB_ENDPOINT_OUT)) | |
125 | /* The first endpoint should be 1 (outbound). */ | |
126 | break; | |
127 | ||
128 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != | |
129 | (2 | LIBUSB_ENDPOINT_IN)) | |
130 | /* The second endpoint should be 2 (inbound). */ | |
131 | break; | |
132 | ||
133 | /* TODO: Check the debug channel... */ | |
134 | ||
135 | /* If we made it here, it must be an fx2lafw. */ | |
f9a69557 | 136 | ret = TRUE; |
b1eeb67e JH |
137 | } |
138 | ||
139 | if (conf_dsc) | |
140 | libusb_free_config_descriptor(conf_dsc); | |
141 | ||
142 | return ret; | |
143 | } | |
144 | ||
43125c69 JH |
145 | static int fx2lafw_open_dev(int dev_index) |
146 | { | |
147 | libusb_device **devlist; | |
148 | struct libusb_device_descriptor des; | |
149 | struct sr_dev_inst *sdi; | |
772a0e61 | 150 | struct context *ctx; |
43125c69 JH |
151 | int err, skip, i; |
152 | ||
153 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
154 | return SR_ERR; | |
155 | ctx = sdi->priv; | |
156 | ||
157 | if (sdi->status == SR_ST_ACTIVE) | |
158 | /* already in use */ | |
159 | return SR_ERR; | |
160 | ||
161 | skip = 0; | |
162 | libusb_get_device_list(usb_context, &devlist); | |
163 | for (i = 0; devlist[i]; i++) { | |
164 | if ((err = libusb_get_device_descriptor(devlist[i], &des))) { | |
165 | sr_err("fx2lafw: failed to get device descriptor: %d", err); | |
166 | continue; | |
167 | } | |
168 | ||
74fcfb80 JH |
169 | if (des.idVendor != ctx->profile->vid |
170 | || des.idProduct != ctx->profile->pid) | |
43125c69 JH |
171 | continue; |
172 | ||
173 | if (sdi->status == SR_ST_INITIALIZING) { | |
174 | if (skip != dev_index) { | |
175 | /* Skip devices of this type that aren't the one we want. */ | |
176 | skip += 1; | |
177 | continue; | |
178 | } | |
179 | } else if (sdi->status == SR_ST_INACTIVE) { | |
180 | /* | |
181 | * This device is fully enumerated, so we need to find | |
182 | * this device by vendor, product, bus and address. | |
183 | */ | |
184 | if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus | |
185 | || libusb_get_device_address(devlist[i]) != ctx->usb->address) | |
186 | /* this is not the one */ | |
187 | continue; | |
188 | } | |
189 | ||
190 | if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) { | |
191 | if (ctx->usb->address == 0xff) | |
192 | /* | |
193 | * first time we touch this device after firmware upload, | |
194 | * so we don't know the address yet. | |
195 | */ | |
196 | ctx->usb->address = libusb_get_device_address(devlist[i]); | |
197 | ||
198 | sdi->status = SR_ST_ACTIVE; | |
199 | sr_info("fx2lafw: opened device %d on %d.%d interface %d", | |
200 | sdi->index, ctx->usb->bus, | |
201 | ctx->usb->address, USB_INTERFACE); | |
202 | } else { | |
203 | sr_err("fx2lafw: failed to open device: %d", err); | |
204 | } | |
205 | ||
206 | /* if we made it here, we handled the device one way or another */ | |
207 | break; | |
208 | } | |
209 | libusb_free_device_list(devlist, 1); | |
210 | ||
211 | if (sdi->status != SR_ST_ACTIVE) | |
212 | return SR_ERR; | |
213 | ||
214 | return SR_OK; | |
215 | } | |
216 | ||
f1898235 JH |
217 | static void close_dev(struct sr_dev_inst *sdi) |
218 | { | |
772a0e61 | 219 | struct context *ctx; |
f1898235 JH |
220 | |
221 | ctx = sdi->priv; | |
222 | ||
223 | if (ctx->usb->devhdl == NULL) | |
224 | return; | |
225 | ||
226 | sr_info("fx2lafw: closing device %d on %d.%d interface %d", sdi->index, | |
227 | ctx->usb->bus, ctx->usb->address, USB_INTERFACE); | |
228 | libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE); | |
229 | libusb_close(ctx->usb->devhdl); | |
230 | ctx->usb->devhdl = NULL; | |
231 | sdi->status = SR_ST_INACTIVE; | |
232 | } | |
233 | ||
772a0e61 | 234 | static struct context *fx2lafw_device_new(void) |
187b3582 | 235 | { |
772a0e61 | 236 | struct context *ctx; |
187b3582 | 237 | |
772a0e61 UH |
238 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { |
239 | sr_err("fx2lafw: %s: ctx malloc failed", __func__); | |
187b3582 JH |
240 | return NULL; |
241 | } | |
242 | ||
772a0e61 | 243 | return ctx; |
187b3582 | 244 | } |
f302a082 JH |
245 | |
246 | /* | |
247 | * API callbacks | |
248 | */ | |
249 | ||
250 | static int hw_init(const char *deviceinfo) | |
251 | { | |
187b3582 JH |
252 | struct sr_dev_inst *sdi; |
253 | struct libusb_device_descriptor des; | |
254 | struct fx2lafw_profile *fx2lafw_prof; | |
772a0e61 | 255 | struct context *ctx; |
187b3582 JH |
256 | libusb_device **devlist; |
257 | int err; | |
258 | int devcnt = 0; | |
259 | int i, j; | |
260 | ||
261 | /* Avoid compiler warnings. */ | |
f302a082 | 262 | (void)deviceinfo; |
187b3582 JH |
263 | |
264 | if (libusb_init(&usb_context) != 0) { | |
265 | sr_warn("Failed to initialize USB."); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | /* Find all fx2lafw compatible devices and upload firware to all of them. */ | |
270 | libusb_get_device_list(usb_context, &devlist); | |
271 | for (i = 0; devlist[i]; i++) { | |
272 | ||
273 | if ((err = libusb_get_device_descriptor( | |
274 | devlist[i], &des)) != 0) { | |
275 | sr_warn("failed to get device descriptor: %d", err); | |
276 | continue; | |
277 | } | |
278 | ||
279 | fx2lafw_prof = NULL; | |
280 | for (j = 0; supported_fx2[j].vid; j++) { | |
281 | if (des.idVendor == supported_fx2[j].vid && | |
282 | des.idProduct == supported_fx2[j].pid) { | |
283 | fx2lafw_prof = &supported_fx2[j]; | |
284 | } | |
285 | } | |
286 | ||
287 | /* Skip if the device was not found */ | |
288 | if(!fx2lafw_prof) | |
289 | continue; | |
290 | ||
291 | sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, | |
292 | fx2lafw_prof->vendor, fx2lafw_prof->model, | |
293 | fx2lafw_prof->model_version); | |
294 | if(!sdi) | |
295 | return 0; | |
296 | ||
90282c82 JH |
297 | ctx = fx2lafw_device_new(); |
298 | ctx->profile = fx2lafw_prof; | |
299 | sdi->priv = ctx; | |
be4b99e8 | 300 | dev_insts = g_slist_append(dev_insts, sdi); |
187b3582 | 301 | |
b1eeb67e JH |
302 | if (check_conf_profile(devlist[i])) { |
303 | /* Already has the firmware, so fix the new address. */ | |
304 | sr_dbg("fx2lafw: Found a fx2lafw device."); | |
305 | sdi->status = SR_ST_INACTIVE; | |
306 | ctx->usb = sr_usb_dev_inst_new | |
307 | (libusb_get_bus_number(devlist[i]), | |
308 | libusb_get_device_address(devlist[i]), NULL); | |
309 | } else { | |
310 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, FIRMWARE) == SR_OK) | |
311 | /* Remember when the firmware on this device was updated */ | |
312 | g_get_current_time(&ctx->fw_updated); | |
313 | else | |
314 | sr_err("fx2lafw: firmware upload failed for " | |
315 | "device %d", devcnt); | |
316 | ctx->usb = sr_usb_dev_inst_new | |
317 | (libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
318 | } | |
319 | ||
187b3582 JH |
320 | devcnt++; |
321 | } | |
322 | libusb_free_device_list(devlist, 1); | |
323 | ||
324 | return devcnt; | |
f302a082 JH |
325 | } |
326 | ||
772a0e61 | 327 | static int hw_dev_open(int dev_index) |
f302a082 | 328 | { |
43125c69 JH |
329 | GTimeVal cur_time; |
330 | struct sr_dev_inst *sdi; | |
772a0e61 | 331 | struct context *ctx; |
43125c69 JH |
332 | int timediff, err; |
333 | ||
772a0e61 | 334 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
43125c69 JH |
335 | return SR_ERR; |
336 | ctx = sdi->priv; | |
337 | ||
338 | /* | |
339 | * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms | |
340 | * for the FX2 to renumerate | |
341 | */ | |
342 | err = 0; | |
343 | if (GTV_TO_MSEC(ctx->fw_updated) > 0) { | |
344 | sr_info("fx2lafw: waiting for device to reset"); | |
345 | /* takes at least 300ms for the FX2 to be gone from the USB bus */ | |
346 | g_usleep(300 * 1000); | |
347 | timediff = 0; | |
348 | while (timediff < MAX_RENUM_DELAY) { | |
772a0e61 | 349 | if ((err = fx2lafw_open_dev(dev_index)) == SR_OK) |
43125c69 JH |
350 | break; |
351 | g_usleep(100 * 1000); | |
352 | g_get_current_time(&cur_time); | |
353 | timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated); | |
354 | } | |
355 | sr_info("fx2lafw: device came back after %d ms", timediff); | |
356 | } else { | |
772a0e61 | 357 | err = fx2lafw_open_dev(dev_index); |
43125c69 JH |
358 | } |
359 | ||
360 | if (err != SR_OK) { | |
361 | sr_err("fx2lafw: unable to open device"); | |
362 | return SR_ERR; | |
363 | } | |
364 | ctx = sdi->priv; | |
365 | ||
366 | err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); | |
367 | if (err != 0) { | |
368 | sr_err("fx2lafw: Unable to claim interface: %d", err); | |
369 | return SR_ERR; | |
370 | } | |
371 | ||
f302a082 JH |
372 | return SR_OK; |
373 | } | |
374 | ||
f1898235 | 375 | static int hw_dev_close(int dev_index) |
f302a082 | 376 | { |
f1898235 JH |
377 | struct sr_dev_inst *sdi; |
378 | ||
379 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
380 | sr_err("fx2lafw: %s: sdi was NULL", __func__); | |
0abee507 | 381 | return SR_ERR_BUG; |
f1898235 JH |
382 | } |
383 | ||
384 | /* TODO */ | |
385 | close_dev(sdi); | |
386 | ||
f302a082 JH |
387 | return SR_OK; |
388 | } | |
389 | ||
390 | static int hw_cleanup(void) | |
391 | { | |
187b3582 JH |
392 | GSList *l; |
393 | struct sr_dev_inst *sdi; | |
772a0e61 | 394 | struct context *ctx; |
62bc70e4 | 395 | int ret = SR_OK; |
187b3582 | 396 | |
62bc70e4 JH |
397 | for(l = dev_insts; l; l = l->next) { |
398 | if (!(sdi = l->data)) { | |
399 | /* Log error, but continue cleaning up the rest. */ | |
400 | sr_err("fx2lafw: %s: sdi was NULL, continuing", __func__); | |
401 | ret = SR_ERR_BUG; | |
402 | continue; | |
403 | } | |
404 | if (!(ctx = sdi->priv)) { | |
405 | /* Log error, but continue cleaning up the rest. */ | |
406 | sr_err("fx2lafw: %s: sdi->priv was NULL, continuing", | |
407 | __func__); | |
408 | ret = SR_ERR_BUG; | |
409 | continue; | |
410 | } | |
411 | close_dev(sdi); | |
187b3582 JH |
412 | sdi = l->data; |
413 | sr_dev_inst_free(sdi); | |
414 | } | |
415 | ||
62bc70e4 JH |
416 | g_slist_free(dev_insts); |
417 | dev_insts = NULL; | |
187b3582 JH |
418 | |
419 | if(usb_context) | |
420 | libusb_exit(usb_context); | |
421 | usb_context = NULL; | |
422 | ||
62bc70e4 | 423 | return ret; |
f302a082 JH |
424 | } |
425 | ||
772a0e61 | 426 | static void *hw_dev_info_get(int dev_index, int dev_info_id) |
f302a082 | 427 | { |
8b35f474 | 428 | struct sr_dev_inst *sdi; |
772a0e61 | 429 | struct context *ctx; |
8b35f474 | 430 | |
772a0e61 | 431 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
8b35f474 | 432 | return NULL; |
cdfdd711 | 433 | ctx = sdi->priv; |
8b35f474 | 434 | |
772a0e61 | 435 | switch (dev_info_id) { |
8b35f474 JH |
436 | case SR_DI_INST: |
437 | return sdi; | |
438 | case SR_DI_NUM_PROBES: | |
cdfdd711 | 439 | return GINT_TO_POINTER(ctx->profile->num_probes); |
8b35f474 JH |
440 | case SR_DI_PROBE_NAMES: |
441 | return fx2lafw_probe_names; | |
442 | case SR_DI_SAMPLERATES: | |
443 | return &fx2lafw_samplerates; | |
444 | case SR_DI_TRIGGER_TYPES: | |
445 | return TRIGGER_TYPES; | |
e3186647 JH |
446 | case SR_DI_CUR_SAMPLERATE: |
447 | return &ctx->cur_samplerate; | |
8b35f474 JH |
448 | } |
449 | ||
f302a082 JH |
450 | return NULL; |
451 | } | |
452 | ||
772a0e61 | 453 | static int hw_dev_status_get(int dev_index) |
f302a082 | 454 | { |
aae2fed6 | 455 | const struct sr_dev_inst *const sdi = |
772a0e61 | 456 | sr_dev_inst_get(dev_insts, dev_index); |
aae2fed6 JH |
457 | |
458 | if (!sdi) | |
459 | return SR_ST_NOT_FOUND; | |
460 | ||
461 | return sdi->status; | |
f302a082 JH |
462 | } |
463 | ||
464 | static int *hw_hwcap_get_all(void) | |
465 | { | |
8b35f474 | 466 | return fx2lafw_capabilities; |
f302a082 JH |
467 | } |
468 | ||
7cb621d4 | 469 | static int hw_dev_config_set(int dev_index, int hwcap, void *value) |
f302a082 | 470 | { |
7cb621d4 | 471 | struct sr_dev_inst *sdi; |
772a0e61 | 472 | struct context *ctx; |
7cb621d4 JH |
473 | int ret; |
474 | ||
475 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
476 | return SR_ERR; | |
477 | ctx = sdi->priv; | |
478 | ||
e3186647 JH |
479 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
480 | ctx->cur_samplerate = *(uint64_t *)value; | |
481 | ret = SR_OK; | |
482 | } else if (hwcap == SR_HWCAP_PROBECONFIG) { | |
483 | ret = SR_OK; | |
484 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { | |
7cb621d4 JH |
485 | ctx->limit_samples = *(uint64_t *)value; |
486 | ret = SR_OK; | |
487 | } else { | |
488 | ret = SR_ERR; | |
489 | } | |
490 | ||
491 | return ret; | |
f302a082 JH |
492 | } |
493 | ||
1f9813eb | 494 | static int receive_data(int fd, int revents, void *cb_data) |
610dbb70 JH |
495 | { |
496 | struct timeval tv; | |
497 | ||
498 | /* Avoid compiler warnings. */ | |
499 | (void)fd; | |
500 | (void)revents; | |
1f9813eb | 501 | (void)cb_data; |
610dbb70 JH |
502 | |
503 | tv.tv_sec = tv.tv_usec = 0; | |
504 | libusb_handle_events_timeout(usb_context, &tv); | |
505 | ||
506 | return TRUE; | |
507 | } | |
508 | ||
509 | static void receive_transfer(struct libusb_transfer *transfer) | |
510 | { | |
511 | /* TODO: These statics have to move to the ctx struct. */ | |
512 | static int num_samples = 0; | |
513 | static int empty_transfer_count = 0; | |
514 | struct sr_datafeed_packet packet; | |
515 | struct sr_datafeed_logic logic; | |
772a0e61 | 516 | struct context *ctx; |
610dbb70 JH |
517 | int cur_buflen; |
518 | unsigned char *cur_buf, *new_buf; | |
519 | ||
520 | /* hw_dev_acquisition_stop() is telling us to stop. */ | |
521 | if (transfer == NULL) | |
522 | num_samples = -1; | |
523 | ||
524 | /* | |
525 | * If acquisition has already ended, just free any queued up | |
526 | * transfer that come in. | |
527 | */ | |
528 | if (num_samples == -1) { | |
529 | if (transfer) | |
530 | libusb_free_transfer(transfer); | |
531 | return; | |
532 | } | |
533 | ||
534 | sr_info("fx2lafw: receive_transfer(): status %d received %d bytes", | |
535 | transfer->status, transfer->actual_length); | |
536 | ||
537 | /* Save incoming transfer before reusing the transfer struct. */ | |
538 | cur_buf = transfer->buffer; | |
539 | cur_buflen = transfer->actual_length; | |
540 | ctx = transfer->user_data; | |
541 | ||
542 | /* Fire off a new request. */ | |
543 | if (!(new_buf = g_try_malloc(4096))) { | |
544 | sr_err("fx2lafw: %s: new_buf malloc failed", __func__); | |
545 | return; /* TODO: SR_ERR_MALLOC */ | |
546 | } | |
547 | ||
548 | transfer->buffer = new_buf; | |
549 | transfer->length = 4096; | |
550 | if (libusb_submit_transfer(transfer) != 0) { | |
551 | /* TODO: Stop session? */ | |
552 | /* TODO: Better error message. */ | |
553 | sr_err("fx2lafw: %s: libusb_submit_transfer error", __func__); | |
554 | } | |
555 | ||
556 | if (cur_buflen == 0) { | |
557 | empty_transfer_count++; | |
558 | if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
559 | /* | |
560 | * The FX2 gave up. End the acquisition, the frontend | |
561 | * will work out that the samplecount is short. | |
562 | */ | |
3cd3a20b | 563 | hw_dev_acquisition_stop(-1, ctx->session_dev_id); |
610dbb70 JH |
564 | } |
565 | return; | |
566 | } else { | |
567 | empty_transfer_count = 0; | |
568 | } | |
569 | ||
570 | /* Send the incoming transfer to the session bus. */ | |
571 | packet.type = SR_DF_LOGIC; | |
572 | packet.payload = &logic; | |
573 | logic.length = cur_buflen; | |
574 | logic.unitsize = 1; | |
575 | logic.data = cur_buf; | |
3cd3a20b | 576 | sr_session_send(ctx->session_dev_id, &packet); |
610dbb70 JH |
577 | g_free(cur_buf); |
578 | ||
579 | num_samples += cur_buflen; | |
580 | if (ctx->limit_samples && | |
581 | (unsigned int) num_samples > ctx->limit_samples) { | |
3cd3a20b | 582 | hw_dev_acquisition_stop(-1, ctx->session_dev_id); |
610dbb70 JH |
583 | } |
584 | } | |
585 | ||
3cd3a20b | 586 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
f302a082 | 587 | { |
610dbb70 JH |
588 | struct sr_dev_inst *sdi; |
589 | struct sr_datafeed_packet *packet; | |
590 | struct sr_datafeed_header *header; | |
772a0e61 | 591 | struct context *ctx; |
610dbb70 JH |
592 | struct libusb_transfer *transfer; |
593 | const struct libusb_pollfd **lupfd; | |
f6582cd7 | 594 | int err, size, i; |
610dbb70 JH |
595 | unsigned char *buf; |
596 | ||
597 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
598 | return SR_ERR; | |
599 | ctx = sdi->priv; | |
3cd3a20b | 600 | ctx->session_dev_id = cb_data; |
610dbb70 JH |
601 | |
602 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { | |
603 | sr_err("fx2lafw: %s: packet malloc failed", __func__); | |
604 | return SR_ERR_MALLOC; | |
605 | } | |
606 | ||
607 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
608 | sr_err("fx2lafw: %s: header malloc failed", __func__); | |
609 | return SR_ERR_MALLOC; | |
610 | } | |
611 | ||
f6582cd7 JH |
612 | if ((err = command_start_acquisition (ctx->usb->devhdl)) != SR_OK) { |
613 | return err; | |
614 | } | |
615 | ||
610dbb70 JH |
616 | /* Start with 2K transfer, subsequently increased to 4K. */ |
617 | size = 2048; | |
618 | for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { | |
619 | if (!(buf = g_try_malloc(size))) { | |
620 | sr_err("fx2lafw: %s: buf malloc failed", __func__); | |
621 | return SR_ERR_MALLOC; | |
622 | } | |
623 | transfer = libusb_alloc_transfer(0); | |
624 | libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl, | |
625 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
626 | receive_transfer, ctx, 40); | |
627 | if (libusb_submit_transfer(transfer) != 0) { | |
628 | /* TODO: Free them all. */ | |
629 | libusb_free_transfer(transfer); | |
630 | g_free(buf); | |
631 | return SR_ERR; | |
632 | } | |
633 | size = 4096; | |
634 | } | |
635 | ||
636 | lupfd = libusb_get_pollfds(usb_context); | |
637 | for (i = 0; lupfd[i]; i++) | |
638 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, | |
639 | 40, receive_data, NULL); | |
640 | free(lupfd); /* NOT g_free()! */ | |
641 | ||
642 | packet->type = SR_DF_HEADER; | |
643 | packet->payload = header; | |
644 | header->feed_version = 1; | |
645 | gettimeofday(&header->starttime, NULL); | |
e3186647 | 646 | header->samplerate = ctx->cur_samplerate; |
610dbb70 | 647 | header->num_logic_probes = ctx->profile->num_probes; |
c8f2c9dd | 648 | sr_session_send(cb_data, packet); |
610dbb70 JH |
649 | g_free(header); |
650 | g_free(packet); | |
651 | ||
f302a082 JH |
652 | return SR_OK; |
653 | } | |
654 | ||
3cd3a20b | 655 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ |
c8f2c9dd | 656 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data) |
f302a082 | 657 | { |
5da93902 JH |
658 | struct sr_datafeed_packet packet; |
659 | ||
660 | /* Avoid compiler warnings. */ | |
f302a082 | 661 | (void)dev_index; |
5da93902 JH |
662 | |
663 | packet.type = SR_DF_END; | |
c8f2c9dd | 664 | sr_session_send(cb_data, &packet); |
5da93902 JH |
665 | |
666 | receive_transfer(NULL); | |
667 | ||
668 | /* TODO: Need to cancel and free any queued up transfers. */ | |
669 | ||
f302a082 JH |
670 | return SR_OK; |
671 | } | |
672 | ||
c09f0b57 | 673 | SR_PRIV struct sr_dev_driver fx2lafw_driver_info = { |
f302a082 JH |
674 | .name = "fx2lafw", |
675 | .longname = "fx2lafw", | |
676 | .api_version = 1, | |
677 | .init = hw_init, | |
678 | .cleanup = hw_cleanup, | |
679 | .dev_open = hw_dev_open, | |
680 | .dev_close = hw_dev_close, | |
681 | .dev_info_get = hw_dev_info_get, | |
682 | .dev_status_get = hw_dev_status_get, | |
683 | .hwcap_get_all = hw_hwcap_get_all, | |
684 | .dev_config_set = hw_dev_config_set, | |
685 | .dev_acquisition_start = hw_dev_acquisition_start, | |
686 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
687 | }; |