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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 | |
4679d14d | 31 | static const struct fx2lafw_profile supported_fx2[] = { |
17b6c75a JH |
32 | /* CWAV USBee AX |
33 | * EE Electronics ESLA201A | |
34 | */ | |
187b3582 JH |
35 | { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, 8 }, |
36 | { 0, 0, 0, 0, 0, 0 } | |
37 | }; | |
38 | ||
8b35f474 JH |
39 | static int fx2lafw_capabilities[] = { |
40 | SR_HWCAP_LOGIC_ANALYZER, | |
41 | SR_HWCAP_SAMPLERATE, | |
42 | ||
43 | /* These are really implemented in the driver, not the hardware. */ | |
44 | SR_HWCAP_LIMIT_SAMPLES, | |
45 | SR_HWCAP_CONTINUOUS, | |
772a0e61 | 46 | 0, |
8b35f474 JH |
47 | }; |
48 | ||
49 | static const char *fx2lafw_probe_names[] = { | |
50 | "D0", | |
51 | "D1", | |
52 | "D2", | |
53 | "D3", | |
54 | "D4", | |
55 | "D5", | |
56 | "D6", | |
57 | "D7", | |
772a0e61 | 58 | NULL, |
8b35f474 JH |
59 | }; |
60 | ||
61 | static uint64_t fx2lafw_supported_samplerates[] = { | |
62 | SR_MHZ(1), | |
63 | SR_MHZ(2), | |
64 | SR_MHZ(3), | |
65 | SR_MHZ(4), | |
66 | SR_MHZ(6), | |
67 | SR_MHZ(8), | |
68 | SR_MHZ(12), | |
69 | SR_MHZ(16), | |
772a0e61 | 70 | SR_MHZ(24), |
8b35f474 JH |
71 | }; |
72 | ||
73 | static struct sr_samplerates fx2lafw_samplerates = { | |
74 | SR_MHZ(1), | |
75 | SR_MHZ(24), | |
76 | SR_HZ(0), | |
772a0e61 | 77 | fx2lafw_supported_samplerates, |
8b35f474 JH |
78 | }; |
79 | ||
cac0bbaa | 80 | static GSList *dev_insts = NULL; |
187b3582 JH |
81 | static libusb_context *usb_context = NULL; |
82 | ||
f92994fd | 83 | static int hw_dev_config_set(int dev_index, int hwcap, void *value); |
1f9813eb | 84 | static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id); |
610dbb70 | 85 | |
b1eeb67e JH |
86 | /** |
87 | * Check the USB configuration to determine if this is an fx2lafw device. | |
88 | * | |
f9a69557 UH |
89 | * @return TRUE if the device's configuration profile match fx2lafw |
90 | * configuration, FALSE otherwise. | |
b1eeb67e | 91 | */ |
f9a69557 | 92 | static gboolean check_conf_profile(libusb_device *dev) |
b1eeb67e JH |
93 | { |
94 | struct libusb_device_descriptor des; | |
95 | struct libusb_config_descriptor *conf_dsc = NULL; | |
96 | const struct libusb_interface_descriptor *intf_dsc; | |
f9a69557 | 97 | gboolean ret = FALSE; |
b1eeb67e JH |
98 | |
99 | while (!ret) { | |
100 | /* Assume it's not a Saleae Logic unless proven wrong. */ | |
101 | ret = 0; | |
102 | ||
103 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
104 | break; | |
105 | ||
106 | if (des.bNumConfigurations != 1) | |
107 | /* Need exactly 1 configuration. */ | |
108 | break; | |
109 | ||
110 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) | |
111 | break; | |
112 | ||
113 | if (conf_dsc->bNumInterfaces != 1) | |
114 | /* Need exactly 1 interface. */ | |
115 | break; | |
116 | ||
117 | if (conf_dsc->interface[0].num_altsetting != 1) | |
118 | /* Need just one alternate setting. */ | |
119 | break; | |
120 | ||
121 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
9031ce63 JH |
122 | if (intf_dsc->bNumEndpoints != 2) |
123 | /* Need exactly 2 end points. */ | |
b1eeb67e JH |
124 | break; |
125 | ||
126 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != | |
9031ce63 JH |
127 | (2 | LIBUSB_ENDPOINT_IN)) // 0x82 |
128 | /* The first endpoint should be 2 (inbound). */ | |
b1eeb67e JH |
129 | break; |
130 | ||
131 | /* TODO: Check the debug channel... */ | |
132 | ||
133 | /* If we made it here, it must be an fx2lafw. */ | |
f9a69557 | 134 | ret = TRUE; |
b1eeb67e JH |
135 | } |
136 | ||
137 | if (conf_dsc) | |
138 | libusb_free_config_descriptor(conf_dsc); | |
139 | ||
140 | return ret; | |
141 | } | |
142 | ||
43125c69 JH |
143 | static int fx2lafw_open_dev(int dev_index) |
144 | { | |
145 | libusb_device **devlist; | |
146 | struct libusb_device_descriptor des; | |
147 | struct sr_dev_inst *sdi; | |
772a0e61 | 148 | struct context *ctx; |
43125c69 JH |
149 | int err, skip, i; |
150 | ||
151 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
152 | return SR_ERR; | |
153 | ctx = sdi->priv; | |
154 | ||
155 | if (sdi->status == SR_ST_ACTIVE) | |
156 | /* already in use */ | |
157 | return SR_ERR; | |
158 | ||
159 | skip = 0; | |
160 | libusb_get_device_list(usb_context, &devlist); | |
161 | for (i = 0; devlist[i]; i++) { | |
162 | if ((err = libusb_get_device_descriptor(devlist[i], &des))) { | |
163 | sr_err("fx2lafw: failed to get device descriptor: %d", err); | |
164 | continue; | |
165 | } | |
166 | ||
74fcfb80 JH |
167 | if (des.idVendor != ctx->profile->vid |
168 | || des.idProduct != ctx->profile->pid) | |
43125c69 JH |
169 | continue; |
170 | ||
171 | if (sdi->status == SR_ST_INITIALIZING) { | |
172 | if (skip != dev_index) { | |
173 | /* Skip devices of this type that aren't the one we want. */ | |
174 | skip += 1; | |
175 | continue; | |
176 | } | |
177 | } else if (sdi->status == SR_ST_INACTIVE) { | |
178 | /* | |
179 | * This device is fully enumerated, so we need to find | |
180 | * this device by vendor, product, bus and address. | |
181 | */ | |
182 | if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus | |
183 | || libusb_get_device_address(devlist[i]) != ctx->usb->address) | |
184 | /* this is not the one */ | |
185 | continue; | |
186 | } | |
187 | ||
188 | if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) { | |
189 | if (ctx->usb->address == 0xff) | |
190 | /* | |
191 | * first time we touch this device after firmware upload, | |
192 | * so we don't know the address yet. | |
193 | */ | |
194 | ctx->usb->address = libusb_get_device_address(devlist[i]); | |
195 | ||
196 | sdi->status = SR_ST_ACTIVE; | |
197 | sr_info("fx2lafw: opened device %d on %d.%d interface %d", | |
198 | sdi->index, ctx->usb->bus, | |
199 | ctx->usb->address, USB_INTERFACE); | |
200 | } else { | |
201 | sr_err("fx2lafw: failed to open device: %d", err); | |
202 | } | |
203 | ||
204 | /* if we made it here, we handled the device one way or another */ | |
205 | break; | |
206 | } | |
207 | libusb_free_device_list(devlist, 1); | |
208 | ||
209 | if (sdi->status != SR_ST_ACTIVE) | |
210 | return SR_ERR; | |
211 | ||
212 | return SR_OK; | |
213 | } | |
214 | ||
f1898235 JH |
215 | static void close_dev(struct sr_dev_inst *sdi) |
216 | { | |
772a0e61 | 217 | struct context *ctx; |
f1898235 JH |
218 | |
219 | ctx = sdi->priv; | |
220 | ||
221 | if (ctx->usb->devhdl == NULL) | |
222 | return; | |
223 | ||
224 | sr_info("fx2lafw: closing device %d on %d.%d interface %d", sdi->index, | |
225 | ctx->usb->bus, ctx->usb->address, USB_INTERFACE); | |
226 | libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE); | |
227 | libusb_close(ctx->usb->devhdl); | |
228 | ctx->usb->devhdl = NULL; | |
229 | sdi->status = SR_ST_INACTIVE; | |
230 | } | |
231 | ||
772a0e61 | 232 | static struct context *fx2lafw_device_new(void) |
187b3582 | 233 | { |
772a0e61 | 234 | struct context *ctx; |
187b3582 | 235 | |
772a0e61 UH |
236 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { |
237 | sr_err("fx2lafw: %s: ctx malloc failed", __func__); | |
187b3582 JH |
238 | return NULL; |
239 | } | |
240 | ||
772a0e61 | 241 | return ctx; |
187b3582 | 242 | } |
f302a082 JH |
243 | |
244 | /* | |
245 | * API callbacks | |
246 | */ | |
247 | ||
248 | static int hw_init(const char *deviceinfo) | |
249 | { | |
187b3582 JH |
250 | struct sr_dev_inst *sdi; |
251 | struct libusb_device_descriptor des; | |
4679d14d | 252 | const struct fx2lafw_profile *fx2lafw_prof; |
772a0e61 | 253 | struct context *ctx; |
187b3582 JH |
254 | libusb_device **devlist; |
255 | int err; | |
256 | int devcnt = 0; | |
257 | int i, j; | |
258 | ||
259 | /* Avoid compiler warnings. */ | |
f302a082 | 260 | (void)deviceinfo; |
187b3582 JH |
261 | |
262 | if (libusb_init(&usb_context) != 0) { | |
263 | sr_warn("Failed to initialize USB."); | |
264 | return 0; | |
265 | } | |
266 | ||
267 | /* Find all fx2lafw compatible devices and upload firware to all of them. */ | |
268 | libusb_get_device_list(usb_context, &devlist); | |
269 | for (i = 0; devlist[i]; i++) { | |
270 | ||
271 | if ((err = libusb_get_device_descriptor( | |
272 | devlist[i], &des)) != 0) { | |
273 | sr_warn("failed to get device descriptor: %d", err); | |
274 | continue; | |
275 | } | |
276 | ||
277 | fx2lafw_prof = NULL; | |
278 | for (j = 0; supported_fx2[j].vid; j++) { | |
279 | if (des.idVendor == supported_fx2[j].vid && | |
280 | des.idProduct == supported_fx2[j].pid) { | |
281 | fx2lafw_prof = &supported_fx2[j]; | |
282 | } | |
283 | } | |
284 | ||
285 | /* Skip if the device was not found */ | |
286 | if(!fx2lafw_prof) | |
287 | continue; | |
288 | ||
289 | sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, | |
290 | fx2lafw_prof->vendor, fx2lafw_prof->model, | |
291 | fx2lafw_prof->model_version); | |
292 | if(!sdi) | |
293 | return 0; | |
294 | ||
90282c82 JH |
295 | ctx = fx2lafw_device_new(); |
296 | ctx->profile = fx2lafw_prof; | |
297 | sdi->priv = ctx; | |
be4b99e8 | 298 | dev_insts = g_slist_append(dev_insts, sdi); |
187b3582 | 299 | |
b1eeb67e JH |
300 | if (check_conf_profile(devlist[i])) { |
301 | /* Already has the firmware, so fix the new address. */ | |
302 | sr_dbg("fx2lafw: Found a fx2lafw device."); | |
303 | sdi->status = SR_ST_INACTIVE; | |
304 | ctx->usb = sr_usb_dev_inst_new | |
305 | (libusb_get_bus_number(devlist[i]), | |
306 | libusb_get_device_address(devlist[i]), NULL); | |
307 | } else { | |
308 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, FIRMWARE) == SR_OK) | |
309 | /* Remember when the firmware on this device was updated */ | |
310 | g_get_current_time(&ctx->fw_updated); | |
311 | else | |
312 | sr_err("fx2lafw: firmware upload failed for " | |
313 | "device %d", devcnt); | |
314 | ctx->usb = sr_usb_dev_inst_new | |
315 | (libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
316 | } | |
317 | ||
187b3582 JH |
318 | devcnt++; |
319 | } | |
320 | libusb_free_device_list(devlist, 1); | |
321 | ||
322 | return devcnt; | |
f302a082 JH |
323 | } |
324 | ||
772a0e61 | 325 | static int hw_dev_open(int dev_index) |
f302a082 | 326 | { |
43125c69 JH |
327 | GTimeVal cur_time; |
328 | struct sr_dev_inst *sdi; | |
772a0e61 | 329 | struct context *ctx; |
43125c69 JH |
330 | int timediff, err; |
331 | ||
772a0e61 | 332 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
43125c69 JH |
333 | return SR_ERR; |
334 | ctx = sdi->priv; | |
335 | ||
336 | /* | |
337 | * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms | |
338 | * for the FX2 to renumerate | |
339 | */ | |
340 | err = 0; | |
341 | if (GTV_TO_MSEC(ctx->fw_updated) > 0) { | |
342 | sr_info("fx2lafw: waiting for device to reset"); | |
343 | /* takes at least 300ms for the FX2 to be gone from the USB bus */ | |
344 | g_usleep(300 * 1000); | |
345 | timediff = 0; | |
346 | while (timediff < MAX_RENUM_DELAY) { | |
772a0e61 | 347 | if ((err = fx2lafw_open_dev(dev_index)) == SR_OK) |
43125c69 JH |
348 | break; |
349 | g_usleep(100 * 1000); | |
350 | g_get_current_time(&cur_time); | |
351 | timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated); | |
352 | } | |
353 | sr_info("fx2lafw: device came back after %d ms", timediff); | |
354 | } else { | |
772a0e61 | 355 | err = fx2lafw_open_dev(dev_index); |
43125c69 JH |
356 | } |
357 | ||
358 | if (err != SR_OK) { | |
359 | sr_err("fx2lafw: unable to open device"); | |
360 | return SR_ERR; | |
361 | } | |
362 | ctx = sdi->priv; | |
363 | ||
364 | err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); | |
365 | if (err != 0) { | |
366 | sr_err("fx2lafw: Unable to claim interface: %d", err); | |
367 | return SR_ERR; | |
368 | } | |
369 | ||
f92994fd JH |
370 | if (ctx->cur_samplerate == 0) { |
371 | /* Samplerate hasn't been set; default to the slowest one. */ | |
372 | if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE, | |
373 | &fx2lafw_supported_samplerates[0]) == SR_ERR) | |
374 | return SR_ERR; | |
375 | } | |
376 | ||
f302a082 JH |
377 | return SR_OK; |
378 | } | |
379 | ||
f1898235 | 380 | static int hw_dev_close(int dev_index) |
f302a082 | 381 | { |
f1898235 JH |
382 | struct sr_dev_inst *sdi; |
383 | ||
384 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
385 | sr_err("fx2lafw: %s: sdi was NULL", __func__); | |
0abee507 | 386 | return SR_ERR_BUG; |
f1898235 JH |
387 | } |
388 | ||
389 | /* TODO */ | |
390 | close_dev(sdi); | |
391 | ||
f302a082 JH |
392 | return SR_OK; |
393 | } | |
394 | ||
395 | static int hw_cleanup(void) | |
396 | { | |
187b3582 JH |
397 | GSList *l; |
398 | struct sr_dev_inst *sdi; | |
772a0e61 | 399 | struct context *ctx; |
62bc70e4 | 400 | int ret = SR_OK; |
187b3582 | 401 | |
62bc70e4 JH |
402 | for(l = dev_insts; l; l = l->next) { |
403 | if (!(sdi = l->data)) { | |
404 | /* Log error, but continue cleaning up the rest. */ | |
405 | sr_err("fx2lafw: %s: sdi was NULL, continuing", __func__); | |
406 | ret = SR_ERR_BUG; | |
407 | continue; | |
408 | } | |
409 | if (!(ctx = sdi->priv)) { | |
410 | /* Log error, but continue cleaning up the rest. */ | |
411 | sr_err("fx2lafw: %s: sdi->priv was NULL, continuing", | |
412 | __func__); | |
413 | ret = SR_ERR_BUG; | |
414 | continue; | |
415 | } | |
416 | close_dev(sdi); | |
187b3582 JH |
417 | sdi = l->data; |
418 | sr_dev_inst_free(sdi); | |
419 | } | |
420 | ||
62bc70e4 JH |
421 | g_slist_free(dev_insts); |
422 | dev_insts = NULL; | |
187b3582 JH |
423 | |
424 | if(usb_context) | |
425 | libusb_exit(usb_context); | |
426 | usb_context = NULL; | |
427 | ||
62bc70e4 | 428 | return ret; |
f302a082 JH |
429 | } |
430 | ||
772a0e61 | 431 | static void *hw_dev_info_get(int dev_index, int dev_info_id) |
f302a082 | 432 | { |
8b35f474 | 433 | struct sr_dev_inst *sdi; |
772a0e61 | 434 | struct context *ctx; |
8b35f474 | 435 | |
772a0e61 | 436 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
8b35f474 | 437 | return NULL; |
cdfdd711 | 438 | ctx = sdi->priv; |
8b35f474 | 439 | |
772a0e61 | 440 | switch (dev_info_id) { |
8b35f474 JH |
441 | case SR_DI_INST: |
442 | return sdi; | |
443 | case SR_DI_NUM_PROBES: | |
cdfdd711 | 444 | return GINT_TO_POINTER(ctx->profile->num_probes); |
8b35f474 JH |
445 | case SR_DI_PROBE_NAMES: |
446 | return fx2lafw_probe_names; | |
447 | case SR_DI_SAMPLERATES: | |
448 | return &fx2lafw_samplerates; | |
449 | case SR_DI_TRIGGER_TYPES: | |
450 | return TRIGGER_TYPES; | |
e3186647 JH |
451 | case SR_DI_CUR_SAMPLERATE: |
452 | return &ctx->cur_samplerate; | |
8b35f474 JH |
453 | } |
454 | ||
f302a082 JH |
455 | return NULL; |
456 | } | |
457 | ||
772a0e61 | 458 | static int hw_dev_status_get(int dev_index) |
f302a082 | 459 | { |
aae2fed6 | 460 | const struct sr_dev_inst *const sdi = |
772a0e61 | 461 | sr_dev_inst_get(dev_insts, dev_index); |
aae2fed6 JH |
462 | |
463 | if (!sdi) | |
464 | return SR_ST_NOT_FOUND; | |
465 | ||
466 | return sdi->status; | |
f302a082 JH |
467 | } |
468 | ||
469 | static int *hw_hwcap_get_all(void) | |
470 | { | |
8b35f474 | 471 | return fx2lafw_capabilities; |
f302a082 JH |
472 | } |
473 | ||
7cb621d4 | 474 | static int hw_dev_config_set(int dev_index, int hwcap, void *value) |
f302a082 | 475 | { |
7cb621d4 | 476 | struct sr_dev_inst *sdi; |
772a0e61 | 477 | struct context *ctx; |
7cb621d4 JH |
478 | int ret; |
479 | ||
480 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
481 | return SR_ERR; | |
482 | ctx = sdi->priv; | |
483 | ||
e3186647 JH |
484 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
485 | ctx->cur_samplerate = *(uint64_t *)value; | |
486 | ret = SR_OK; | |
487 | } else if (hwcap == SR_HWCAP_PROBECONFIG) { | |
488 | ret = SR_OK; | |
489 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { | |
7cb621d4 JH |
490 | ctx->limit_samples = *(uint64_t *)value; |
491 | ret = SR_OK; | |
492 | } else { | |
493 | ret = SR_ERR; | |
494 | } | |
495 | ||
496 | return ret; | |
f302a082 JH |
497 | } |
498 | ||
1f9813eb | 499 | static int receive_data(int fd, int revents, void *cb_data) |
610dbb70 JH |
500 | { |
501 | struct timeval tv; | |
502 | ||
503 | /* Avoid compiler warnings. */ | |
504 | (void)fd; | |
505 | (void)revents; | |
1f9813eb | 506 | (void)cb_data; |
610dbb70 JH |
507 | |
508 | tv.tv_sec = tv.tv_usec = 0; | |
509 | libusb_handle_events_timeout(usb_context, &tv); | |
510 | ||
511 | return TRUE; | |
512 | } | |
513 | ||
2e526f4a JH |
514 | static void abort_acquisition(struct context *ctx) |
515 | { | |
516 | struct sr_datafeed_packet packet; | |
517 | ||
518 | packet.type = SR_DF_END; | |
519 | sr_session_send(ctx->session_dev_id, &packet); | |
520 | ||
521 | ctx->num_samples = -1; | |
522 | ||
523 | /* TODO: Need to cancel and free any queued up transfers. */ | |
524 | } | |
525 | ||
610dbb70 JH |
526 | static void receive_transfer(struct libusb_transfer *transfer) |
527 | { | |
528 | /* TODO: These statics have to move to the ctx struct. */ | |
610dbb70 JH |
529 | static int empty_transfer_count = 0; |
530 | struct sr_datafeed_packet packet; | |
531 | struct sr_datafeed_logic logic; | |
2e526f4a | 532 | struct context *ctx = transfer->user_data; |
610dbb70 JH |
533 | int cur_buflen; |
534 | unsigned char *cur_buf, *new_buf; | |
535 | ||
610dbb70 JH |
536 | /* |
537 | * If acquisition has already ended, just free any queued up | |
538 | * transfer that come in. | |
539 | */ | |
2e526f4a | 540 | if (ctx->num_samples == -1) { |
610dbb70 JH |
541 | if (transfer) |
542 | libusb_free_transfer(transfer); | |
543 | return; | |
544 | } | |
545 | ||
546 | sr_info("fx2lafw: receive_transfer(): status %d received %d bytes", | |
547 | transfer->status, transfer->actual_length); | |
548 | ||
549 | /* Save incoming transfer before reusing the transfer struct. */ | |
550 | cur_buf = transfer->buffer; | |
551 | cur_buflen = transfer->actual_length; | |
552 | ctx = transfer->user_data; | |
553 | ||
554 | /* Fire off a new request. */ | |
555 | if (!(new_buf = g_try_malloc(4096))) { | |
556 | sr_err("fx2lafw: %s: new_buf malloc failed", __func__); | |
557 | return; /* TODO: SR_ERR_MALLOC */ | |
558 | } | |
559 | ||
560 | transfer->buffer = new_buf; | |
561 | transfer->length = 4096; | |
562 | if (libusb_submit_transfer(transfer) != 0) { | |
563 | /* TODO: Stop session? */ | |
564 | /* TODO: Better error message. */ | |
565 | sr_err("fx2lafw: %s: libusb_submit_transfer error", __func__); | |
566 | } | |
567 | ||
568 | if (cur_buflen == 0) { | |
569 | empty_transfer_count++; | |
570 | if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
571 | /* | |
572 | * The FX2 gave up. End the acquisition, the frontend | |
573 | * will work out that the samplecount is short. | |
574 | */ | |
2e526f4a | 575 | abort_acquisition(ctx); |
610dbb70 JH |
576 | } |
577 | return; | |
578 | } else { | |
579 | empty_transfer_count = 0; | |
580 | } | |
581 | ||
582 | /* Send the incoming transfer to the session bus. */ | |
583 | packet.type = SR_DF_LOGIC; | |
584 | packet.payload = &logic; | |
585 | logic.length = cur_buflen; | |
586 | logic.unitsize = 1; | |
587 | logic.data = cur_buf; | |
3cd3a20b | 588 | sr_session_send(ctx->session_dev_id, &packet); |
610dbb70 JH |
589 | g_free(cur_buf); |
590 | ||
2e526f4a | 591 | ctx->num_samples += cur_buflen; |
610dbb70 | 592 | if (ctx->limit_samples && |
2e526f4a JH |
593 | (unsigned int) ctx->num_samples > ctx->limit_samples) { |
594 | abort_acquisition(ctx); | |
610dbb70 JH |
595 | } |
596 | } | |
597 | ||
3cd3a20b | 598 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
f302a082 | 599 | { |
610dbb70 JH |
600 | struct sr_dev_inst *sdi; |
601 | struct sr_datafeed_packet *packet; | |
602 | struct sr_datafeed_header *header; | |
772a0e61 | 603 | struct context *ctx; |
610dbb70 JH |
604 | struct libusb_transfer *transfer; |
605 | const struct libusb_pollfd **lupfd; | |
f6582cd7 | 606 | int err, size, i; |
610dbb70 JH |
607 | unsigned char *buf; |
608 | ||
609 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
610 | return SR_ERR; | |
611 | ctx = sdi->priv; | |
3cd3a20b | 612 | ctx->session_dev_id = cb_data; |
2e526f4a | 613 | ctx->num_samples = 0; |
610dbb70 JH |
614 | |
615 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { | |
616 | sr_err("fx2lafw: %s: packet malloc failed", __func__); | |
617 | return SR_ERR_MALLOC; | |
618 | } | |
619 | ||
620 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
621 | sr_err("fx2lafw: %s: header malloc failed", __func__); | |
622 | return SR_ERR_MALLOC; | |
623 | } | |
624 | ||
625 | /* Start with 2K transfer, subsequently increased to 4K. */ | |
626 | size = 2048; | |
627 | for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { | |
628 | if (!(buf = g_try_malloc(size))) { | |
629 | sr_err("fx2lafw: %s: buf malloc failed", __func__); | |
630 | return SR_ERR_MALLOC; | |
631 | } | |
632 | transfer = libusb_alloc_transfer(0); | |
633 | libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl, | |
634 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
635 | receive_transfer, ctx, 40); | |
636 | if (libusb_submit_transfer(transfer) != 0) { | |
637 | /* TODO: Free them all. */ | |
638 | libusb_free_transfer(transfer); | |
639 | g_free(buf); | |
640 | return SR_ERR; | |
641 | } | |
642 | size = 4096; | |
643 | } | |
644 | ||
645 | lupfd = libusb_get_pollfds(usb_context); | |
646 | for (i = 0; lupfd[i]; i++) | |
647 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, | |
648 | 40, receive_data, NULL); | |
649 | free(lupfd); /* NOT g_free()! */ | |
650 | ||
651 | packet->type = SR_DF_HEADER; | |
652 | packet->payload = header; | |
653 | header->feed_version = 1; | |
654 | gettimeofday(&header->starttime, NULL); | |
e3186647 | 655 | header->samplerate = ctx->cur_samplerate; |
610dbb70 | 656 | header->num_logic_probes = ctx->profile->num_probes; |
c8f2c9dd | 657 | sr_session_send(cb_data, packet); |
610dbb70 JH |
658 | g_free(header); |
659 | g_free(packet); | |
660 | ||
017375d1 JH |
661 | if ((err = command_start_acquisition (ctx->usb->devhdl, |
662 | ctx->cur_samplerate)) != SR_OK) { | |
663 | return err; | |
664 | } | |
665 | ||
f302a082 JH |
666 | return SR_OK; |
667 | } | |
668 | ||
3cd3a20b | 669 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ |
c8f2c9dd | 670 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data) |
f302a082 | 671 | { |
2e526f4a | 672 | struct sr_dev_inst *sdi; |
5da93902 | 673 | |
2e526f4a JH |
674 | /* unused parameter */ |
675 | (void)cb_data; | |
5da93902 | 676 | |
2e526f4a JH |
677 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
678 | return SR_ERR; | |
679 | ||
680 | abort_acquisition(sdi->priv); | |
5da93902 | 681 | |
f302a082 JH |
682 | return SR_OK; |
683 | } | |
684 | ||
c09f0b57 | 685 | SR_PRIV struct sr_dev_driver fx2lafw_driver_info = { |
f302a082 JH |
686 | .name = "fx2lafw", |
687 | .longname = "fx2lafw", | |
688 | .api_version = 1, | |
689 | .init = hw_init, | |
690 | .cleanup = hw_cleanup, | |
691 | .dev_open = hw_dev_open, | |
692 | .dev_close = hw_dev_close, | |
693 | .dev_info_get = hw_dev_info_get, | |
694 | .dev_status_get = hw_dev_status_get, | |
695 | .hwcap_get_all = hw_hwcap_get_all, | |
696 | .dev_config_set = hw_dev_config_set, | |
697 | .dev_acquisition_start = hw_dev_acquisition_start, | |
698 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
699 | }; |