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9db2e455 MG |
1 | /* HM-CFG-USB libusb-driver |
2 | * | |
7ba4ea19 | 3 | * Copyright (c) 2013-16 Michael Gernoth <michael@gernoth.net> |
9db2e455 MG |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to | |
7 | * deal in the Software without restriction, including without limitation the | |
8 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
9 | * sell copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include <string.h> | |
25 | #include <stdio.h> | |
26 | #include <stdint.h> | |
27 | #include <unistd.h> | |
28 | #include <stdlib.h> | |
29 | #include <math.h> | |
30 | #include <poll.h> | |
31 | #include <errno.h> | |
f8718b41 | 32 | #include <sys/time.h> |
9db2e455 MG |
33 | #include <libusb-1.0/libusb.h> |
34 | ||
37c97e62 MG |
35 | /* Workaround for old libusb-1.0 */ |
36 | #ifndef LIBUSB_CALL | |
37 | #define LIBUSB_CALL | |
38 | #define libusb_handle_events_timeout_completed(ctx, tv, x) libusb_handle_events_timeout(ctx, tv) | |
39 | #endif | |
40 | ||
9db2e455 MG |
41 | #include "hexdump.h" |
42 | #include "hmcfgusb.h" | |
43 | ||
813afd12 | 44 | #define USB_TIMEOUT 10000 |
9db2e455 MG |
45 | |
46 | #define ID_VENDOR 0x1b1f | |
47 | #define ID_PRODUCT 0xc00f | |
4d0be794 | 48 | #define ID_PRODUCT_BL 0xc010 |
9db2e455 MG |
49 | |
50 | /* TODO: dynamic */ | |
51 | #define ASYNC_SIZE 0x0040 | |
52 | #define ASYNC_INTERVAL 32 | |
53 | ||
54 | #define EP_OUT 0x02 | |
55 | #define EP_IN 0x83 | |
56 | ||
813afd12 MG |
57 | #define INTERFACE 0 |
58 | ||
9db2e455 | 59 | static int quit = 0; |
e75295bb | 60 | static int debug = 0; |
018f85fa | 61 | static int libusb_initialized = 0; |
9db2e455 MG |
62 | |
63 | /* Not in all libusb-1.0 versions, so we have to roll our own :-( */ | |
64 | static char * usb_strerror(int e) | |
65 | { | |
66 | static char unknerr[256]; | |
67 | ||
68 | switch (e) { | |
69 | case LIBUSB_SUCCESS: | |
70 | return "Success"; | |
71 | case LIBUSB_ERROR_IO: | |
72 | return "Input/output error"; | |
73 | case LIBUSB_ERROR_INVALID_PARAM: | |
74 | return "Invalid parameter"; | |
75 | case LIBUSB_ERROR_ACCESS: | |
76 | return "Access denied (insufficient permissions)"; | |
77 | case LIBUSB_ERROR_NO_DEVICE: | |
78 | return "No such device (it may have been disconnected)"; | |
79 | case LIBUSB_ERROR_NOT_FOUND: | |
80 | return "Entity not found"; | |
81 | case LIBUSB_ERROR_BUSY: | |
82 | return "Resource busy"; | |
83 | case LIBUSB_ERROR_TIMEOUT: | |
84 | return "Operation timed out"; | |
85 | case LIBUSB_ERROR_OVERFLOW: | |
86 | return "Overflow"; | |
87 | case LIBUSB_ERROR_PIPE: | |
88 | return "Pipe error"; | |
89 | case LIBUSB_ERROR_INTERRUPTED: | |
90 | return "System call interrupted (perhaps due to signal)"; | |
91 | case LIBUSB_ERROR_NO_MEM: | |
92 | return "Insufficient memory"; | |
93 | case LIBUSB_ERROR_NOT_SUPPORTED: | |
94 | return "Operation not supported or unimplemented on this platform"; | |
95 | case LIBUSB_ERROR_OTHER: | |
96 | return "Other error"; | |
97 | }; | |
98 | snprintf(unknerr, sizeof(unknerr), "Unknown error code %d / 0x%02x", e, e); | |
99 | return unknerr; | |
100 | } | |
101 | ||
f51714be | 102 | static libusb_device_handle *hmcfgusb_find(int vid, int pid, char *serial) { |
9db2e455 MG |
103 | libusb_device_handle *devh = NULL; |
104 | libusb_device **list; | |
105 | ssize_t cnt; | |
106 | ssize_t i; | |
107 | int err; | |
108 | ||
109 | cnt = libusb_get_device_list(NULL, &list); | |
110 | if (cnt < 0) { | |
111 | fprintf(stderr, "Can't get USB device list: %d\n", (int)cnt); | |
112 | return NULL; | |
113 | } | |
114 | ||
115 | for (i = 0; i < cnt; i++){ | |
116 | struct libusb_device_descriptor desc; | |
117 | ||
118 | err = libusb_get_device_descriptor(list[i], &desc); | |
119 | if (err) | |
120 | continue; | |
121 | ||
62f25bae | 122 | if ((desc.idVendor == vid) && (desc.idProduct == pid)) { |
9db2e455 MG |
123 | libusb_device *dev = list[i]; |
124 | ||
125 | err = libusb_open(dev, &devh); | |
126 | if (err) { | |
127 | fprintf(stderr, "Can't open device: %s\n", usb_strerror(err)); | |
018f85fa | 128 | libusb_free_device_list(list, 1); |
9db2e455 MG |
129 | return NULL; |
130 | } | |
131 | ||
f51714be MG |
132 | if (serial) { |
133 | if (desc.iSerialNumber > 0) { | |
134 | uint8_t devSerial[256]; | |
135 | err = libusb_get_string_descriptor_ascii(devh, desc.iSerialNumber, devSerial, sizeof(devSerial)); | |
136 | if (err < 0) { | |
137 | fprintf(stderr, "Can't read serial-number: %s\n", usb_strerror(err)); | |
138 | libusb_close(devh); | |
139 | libusb_free_device_list(list, 1); | |
140 | return NULL; | |
141 | } | |
142 | if (strcmp((char*)devSerial, (char*)serial)) { | |
143 | libusb_close(devh); | |
144 | continue; | |
145 | } | |
146 | } else { | |
147 | libusb_close(devh); | |
148 | continue; | |
149 | } | |
150 | } | |
151 | ||
813afd12 | 152 | err = libusb_detach_kernel_driver(devh, INTERFACE); |
9db2e455 MG |
153 | if ((err != 0) && (err != LIBUSB_ERROR_NOT_FOUND)) { |
154 | fprintf(stderr, "Can't detach kernel driver: %s\n", usb_strerror(err)); | |
018f85fa MG |
155 | libusb_close(devh); |
156 | libusb_free_device_list(list, 1); | |
9db2e455 MG |
157 | return NULL; |
158 | } | |
159 | ||
813afd12 | 160 | err = libusb_claim_interface(devh, INTERFACE); |
9db2e455 MG |
161 | if ((err != 0)) { |
162 | fprintf(stderr, "Can't claim interface: %s\n", usb_strerror(err)); | |
018f85fa MG |
163 | libusb_close(devh); |
164 | libusb_free_device_list(list, 1); | |
9db2e455 MG |
165 | return NULL; |
166 | } | |
167 | ||
018f85fa | 168 | libusb_free_device_list(list, 0); |
9db2e455 MG |
169 | return devh; |
170 | } | |
171 | ||
172 | } | |
173 | ||
018f85fa | 174 | libusb_free_device_list(list, 1); |
9db2e455 MG |
175 | return NULL; |
176 | } | |
177 | ||
6262005e | 178 | int hmcfgusb_send_null_frame(struct hmcfgusb_dev *usbdev, int silent) |
2a6eaefc MG |
179 | { |
180 | int err; | |
181 | int cnt; | |
3435bdb6 | 182 | unsigned char out[0x40]; |
2a6eaefc | 183 | |
3435bdb6 MG |
184 | memset(out, 0, sizeof(out)); |
185 | ||
3d5b8e70 | 186 | err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, out, 0, &cnt, USB_TIMEOUT); |
6262005e MG |
187 | if (err && (!silent)) { |
188 | fprintf(stderr, "Can't send null frame: %s\n", usb_strerror(err)); | |
2a6eaefc MG |
189 | return 0; |
190 | } | |
191 | ||
192 | return 1; | |
193 | } | |
194 | ||
9db2e455 MG |
195 | int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len, int done) |
196 | { | |
197 | int err; | |
198 | int cnt; | |
f8718b41 MG |
199 | struct timeval tv_start, tv_end; |
200 | int msec; | |
9db2e455 | 201 | |
f8718b41 | 202 | if (debug) { |
627e3f33 | 203 | hexdump(send_data, len, "USB < "); |
f8718b41 MG |
204 | } |
205 | ||
d200d8ca MG |
206 | gettimeofday(&tv_start, NULL); |
207 | ||
9db2e455 MG |
208 | err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, send_data, len, &cnt, USB_TIMEOUT); |
209 | if (err) { | |
210 | fprintf(stderr, "Can't send data: %s\n", usb_strerror(err)); | |
9db2e455 MG |
211 | return 0; |
212 | } | |
213 | ||
214 | if (done) { | |
6262005e | 215 | if (!hmcfgusb_send_null_frame(usbdev, 0)) { |
9db2e455 MG |
216 | return 0; |
217 | } | |
218 | } | |
219 | ||
d200d8ca MG |
220 | gettimeofday(&tv_end, NULL); |
221 | msec = ((tv_end.tv_sec-tv_start.tv_sec)*1000)+((tv_end.tv_usec-tv_start.tv_usec)/1000); | |
222 | ||
223 | if (msec > 100) { | |
6df7655e | 224 | fprintf(stderr, "usb-transfer took more than 100ms (%dms), this may lead to timing problems!\n", msec); |
d200d8ca MG |
225 | } else if (debug) { |
226 | fprintf(stderr, "usb-transfer took %dms!\n", msec); | |
f8718b41 MG |
227 | } |
228 | ||
e0a7146e | 229 | return 1; |
9db2e455 MG |
230 | } |
231 | ||
b5e57d26 | 232 | static struct libusb_transfer *hmcfgusb_prepare_int(libusb_device_handle *devh, libusb_transfer_cb_fn cb, void *data, int in_size) |
9db2e455 MG |
233 | { |
234 | unsigned char *data_buf; | |
235 | struct libusb_transfer *transfer; | |
236 | int err; | |
237 | ||
b5e57d26 | 238 | data_buf = malloc(in_size); |
9db2e455 MG |
239 | if (!data_buf) { |
240 | fprintf(stderr, "Can't allocate memory for data-buffer!\n"); | |
241 | return NULL; | |
242 | } | |
243 | ||
244 | transfer = libusb_alloc_transfer(0); | |
245 | if (!transfer) { | |
246 | fprintf(stderr, "Can't allocate memory for usb-transfer!\n"); | |
247 | free(data_buf); | |
248 | return NULL; | |
249 | } | |
250 | ||
251 | libusb_fill_interrupt_transfer(transfer, devh, EP_IN, | |
b5e57d26 | 252 | data_buf, in_size, cb, data, USB_TIMEOUT); |
9db2e455 | 253 | |
bafd75c9 | 254 | transfer->flags = LIBUSB_TRANSFER_FREE_BUFFER; |
9db2e455 MG |
255 | |
256 | err = libusb_submit_transfer(transfer); | |
257 | if (err != 0) { | |
258 | fprintf(stderr, "Can't submit transfer: %s\n", usb_strerror(err)); | |
259 | libusb_free_transfer(transfer); | |
9db2e455 MG |
260 | return NULL; |
261 | } | |
262 | ||
263 | return transfer; | |
264 | } | |
265 | ||
266 | struct hmcfgusb_cb_data { | |
813afd12 | 267 | struct hmcfgusb_dev *dev; |
9db2e455 MG |
268 | hmcfgusb_cb_fn cb; |
269 | void *data; | |
270 | }; | |
271 | ||
272 | static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer) | |
273 | { | |
274 | int err; | |
275 | struct hmcfgusb_cb_data *cb_data; | |
276 | ||
813afd12 MG |
277 | cb_data = transfer->user_data; |
278 | ||
9db2e455 MG |
279 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { |
280 | if (transfer->status != LIBUSB_TRANSFER_TIMED_OUT) { | |
018f85fa MG |
281 | if (transfer->status != LIBUSB_TRANSFER_CANCELLED) |
282 | fprintf(stderr, "Interrupt transfer not completed: %s!\n", usb_strerror(transfer->status)); | |
283 | ||
9db2e455 | 284 | quit = EIO; |
1c346883 | 285 | goto out; |
9db2e455 | 286 | } |
9db2e455 | 287 | } else { |
27bb301b | 288 | if (cb_data && cb_data->cb) { |
e0a7146e | 289 | if (debug) |
627e3f33 | 290 | hexdump(transfer->buffer, transfer->actual_length, "USB > "); |
4371275b MG |
291 | |
292 | if (!cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data)) { | |
293 | quit = EIO; | |
1c346883 | 294 | goto out; |
4371275b | 295 | } |
27bb301b | 296 | } else { |
e0a7146e | 297 | hexdump(transfer->buffer, transfer->actual_length, "> "); |
27bb301b | 298 | } |
9db2e455 MG |
299 | } |
300 | ||
301 | err = libusb_submit_transfer(transfer); | |
302 | if (err != 0) { | |
303 | fprintf(stderr, "Can't re-submit transfer: %s\n", usb_strerror(err)); | |
1c346883 MG |
304 | goto out; |
305 | } | |
306 | ||
307 | return; | |
308 | ||
309 | out: | |
310 | libusb_free_transfer(transfer); | |
311 | if (cb_data) { | |
312 | if (cb_data->dev && cb_data->dev->transfer) { | |
313 | cb_data->dev->transfer = NULL; | |
325ed703 | 314 | } |
1c346883 | 315 | free(cb_data); |
9db2e455 MG |
316 | } |
317 | } | |
318 | ||
f51714be | 319 | struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data, char *serial) |
9db2e455 MG |
320 | { |
321 | libusb_device_handle *devh = NULL; | |
322 | const struct libusb_pollfd **usb_pfd = NULL; | |
323 | struct hmcfgusb_dev *dev = NULL; | |
324 | struct hmcfgusb_cb_data *cb_data = NULL; | |
62f25bae | 325 | int bootloader = 0; |
9db2e455 MG |
326 | int err; |
327 | int i; | |
328 | ||
018f85fa MG |
329 | if (!libusb_initialized) { |
330 | err = libusb_init(NULL); | |
331 | if (err != 0) { | |
332 | fprintf(stderr, "Can't initialize libusb: %s\n", usb_strerror(err)); | |
333 | return NULL; | |
334 | } | |
9db2e455 | 335 | } |
018f85fa | 336 | libusb_initialized = 1; |
9db2e455 | 337 | |
f51714be | 338 | devh = hmcfgusb_find(ID_VENDOR, ID_PRODUCT, serial); |
9db2e455 | 339 | if (!devh) { |
f51714be | 340 | devh = hmcfgusb_find(ID_VENDOR, ID_PRODUCT_BL, serial); |
62f25bae | 341 | if (!devh) { |
f51714be MG |
342 | if (serial) { |
343 | fprintf(stderr, "Can't find/open HM-CFG-USB with serial %s!\n", serial); | |
344 | } else { | |
345 | fprintf(stderr, "Can't find/open HM-CFG-USB!\n"); | |
346 | } | |
018f85fa MG |
347 | #ifdef NEED_LIBUSB_EXIT |
348 | hmcfgusb_exit(); | |
349 | #endif | |
62f25bae MG |
350 | return NULL; |
351 | } | |
352 | bootloader = 1; | |
9db2e455 MG |
353 | } |
354 | ||
355 | dev = malloc(sizeof(struct hmcfgusb_dev)); | |
356 | if (!dev) { | |
357 | perror("Can't allocate memory for hmcfgusb_dev"); | |
211fd7e5 | 358 | libusb_close(devh); |
018f85fa MG |
359 | #ifdef NEED_LIBUSB_EXIT |
360 | hmcfgusb_exit(); | |
361 | #endif | |
9db2e455 MG |
362 | return NULL; |
363 | } | |
364 | ||
365 | memset(dev, 0, sizeof(struct hmcfgusb_dev)); | |
366 | dev->usb_devh = devh; | |
62f25bae MG |
367 | dev->bootloader = bootloader; |
368 | dev->opened_at = time(NULL); | |
9db2e455 MG |
369 | |
370 | cb_data = malloc(sizeof(struct hmcfgusb_cb_data)); | |
371 | if (!cb_data) { | |
372 | perror("Can't allocate memory for hmcfgusb_cb_data"); | |
4cadd56d | 373 | free(dev); |
211fd7e5 | 374 | libusb_close(devh); |
018f85fa MG |
375 | #ifdef NEED_LIBUSB_EXIT |
376 | hmcfgusb_exit(); | |
377 | #endif | |
9db2e455 MG |
378 | return NULL; |
379 | } | |
380 | ||
381 | memset(cb_data, 0, sizeof(struct hmcfgusb_cb_data)); | |
382 | ||
813afd12 | 383 | cb_data->dev = dev; |
9db2e455 MG |
384 | cb_data->cb = cb; |
385 | cb_data->data = data; | |
386 | ||
bafd75c9 | 387 | dev->transfer = hmcfgusb_prepare_int(devh, hmcfgusb_interrupt, cb_data, ASYNC_SIZE); |
b5e57d26 | 388 | |
9db2e455 MG |
389 | if (!dev->transfer) { |
390 | fprintf(stderr, "Can't prepare async device io!\n"); | |
4cadd56d MG |
391 | free(dev); |
392 | free(cb_data); | |
211fd7e5 | 393 | libusb_close(devh); |
018f85fa MG |
394 | #ifdef NEED_LIBUSB_EXIT |
395 | hmcfgusb_exit(); | |
396 | #endif | |
9db2e455 MG |
397 | return NULL; |
398 | } | |
399 | ||
400 | usb_pfd = libusb_get_pollfds(NULL); | |
401 | if (!usb_pfd) { | |
402 | fprintf(stderr, "Can't get FDset from libusb!\n"); | |
018f85fa MG |
403 | libusb_cancel_transfer(dev->transfer); |
404 | libusb_handle_events(NULL); | |
9db2e455 | 405 | free(dev); |
4cadd56d | 406 | free(cb_data); |
211fd7e5 | 407 | libusb_close(devh); |
018f85fa MG |
408 | #ifdef NEED_LIBUSB_EXIT |
409 | hmcfgusb_exit(); | |
410 | #endif | |
9db2e455 MG |
411 | return NULL; |
412 | } | |
413 | ||
414 | dev->n_usb_pfd = 0; | |
415 | for(i = 0; usb_pfd[i]; i++) | |
416 | dev->n_usb_pfd++; | |
417 | ||
418 | dev->pfd = malloc(dev->n_usb_pfd * sizeof(struct pollfd)); | |
419 | if (!dev->pfd) { | |
420 | perror("Can't allocate memory for poll-fds"); | |
018f85fa MG |
421 | libusb_cancel_transfer(dev->transfer); |
422 | libusb_handle_events(NULL); | |
4cadd56d MG |
423 | free(dev); |
424 | free(cb_data); | |
211fd7e5 | 425 | libusb_close(devh); |
018f85fa MG |
426 | #ifdef NEED_LIBUSB_EXIT |
427 | hmcfgusb_exit(); | |
428 | #endif | |
9db2e455 MG |
429 | return NULL; |
430 | } | |
431 | ||
432 | memset(dev->pfd, 0, dev->n_usb_pfd * sizeof(struct pollfd)); | |
433 | ||
434 | for (i = 0; i < dev->n_usb_pfd; i++) { | |
435 | dev->pfd[i].fd = usb_pfd[i]->fd; | |
436 | dev->pfd[i].events = usb_pfd[i]->events; | |
437 | dev->pfd[i].revents = 0; | |
438 | } | |
439 | ||
440 | free(usb_pfd); | |
441 | ||
442 | dev->n_pfd = dev->n_usb_pfd; | |
443 | ||
f16395da MG |
444 | quit = 0; |
445 | ||
9db2e455 MG |
446 | return dev; |
447 | } | |
448 | ||
449 | int hmcfgusb_add_pfd(struct hmcfgusb_dev *dev, int fd, short events) | |
450 | { | |
451 | dev->n_pfd++; | |
452 | dev->pfd = realloc(dev->pfd, dev->n_pfd * sizeof(struct pollfd)); | |
453 | if (!dev->pfd) { | |
454 | perror("Can't realloc poll-fds"); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | dev->pfd[dev->n_pfd-1].fd = fd; | |
459 | dev->pfd[dev->n_pfd-1].events = events; | |
460 | dev->pfd[dev->n_pfd-1].revents = 0; | |
461 | ||
462 | return 1; | |
463 | } | |
464 | ||
465 | int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) | |
466 | { | |
467 | struct timeval tv; | |
468 | int usb_event = 0; | |
1e79d00a | 469 | int timed_out = 0; |
9db2e455 MG |
470 | int i; |
471 | int n; | |
472 | int fd_n; | |
473 | int err; | |
474 | ||
475 | errno = 0; | |
476 | ||
477 | memset(&tv, 0, sizeof(tv)); | |
478 | err = libusb_get_next_timeout(NULL, &tv); | |
479 | if (err < 0) { | |
480 | fprintf(stderr, "libusb_get_next_timeout: %s\n", usb_strerror(err)); | |
481 | errno = EIO; | |
482 | return -1; | |
483 | } else if (err == 0) { | |
484 | /* No pending timeout or a sane platform */ | |
9db2e455 MG |
485 | } else { |
486 | if ((tv.tv_sec == 0) && (tv.tv_usec == 0)) { | |
487 | usb_event = 1; | |
3b35a8c1 MG |
488 | } else if ((tv.tv_sec * 1000) < timeout) { |
489 | timeout = tv.tv_sec * 1000; | |
9db2e455 MG |
490 | } |
491 | } | |
492 | ||
493 | if (!usb_event) { | |
494 | for (i = 0; i < dev->n_pfd; i++) { | |
495 | dev->pfd[i].revents = 0; | |
496 | } | |
497 | ||
3b35a8c1 | 498 | n = poll(dev->pfd, dev->n_pfd, timeout); |
9db2e455 MG |
499 | if (n < 0) { |
500 | perror("poll"); | |
816f5cd2 | 501 | errno = 0; |
9db2e455 MG |
502 | return -1; |
503 | } else if (n == 0) { | |
504 | usb_event = 1; | |
1e79d00a | 505 | timed_out = 1; |
9db2e455 MG |
506 | } else { |
507 | for (fd_n = 0; fd_n < dev->n_pfd; fd_n++) { | |
508 | if (dev->pfd[fd_n].revents) { | |
509 | if (fd_n < dev->n_usb_pfd) { | |
510 | usb_event = 1; | |
511 | break; | |
512 | } else { | |
816f5cd2 | 513 | errno = 0; |
9db2e455 MG |
514 | return dev->pfd[fd_n].fd; |
515 | } | |
516 | } | |
517 | } | |
518 | } | |
519 | } | |
520 | ||
521 | if (usb_event) { | |
522 | memset(&tv, 0, sizeof(tv)); | |
523 | err = libusb_handle_events_timeout_completed(NULL, &tv, NULL); | |
524 | if (err < 0) { | |
27bb301b | 525 | fprintf(stderr, "libusb_handle_events_timeout_completed: %s\n", usb_strerror(err)); |
9db2e455 MG |
526 | errno = EIO; |
527 | return -1; | |
528 | } | |
529 | } | |
530 | ||
816f5cd2 MG |
531 | errno = 0; |
532 | if (quit) { | |
533 | fprintf(stderr, "closing device-connection due to error %d\n", quit); | |
9db2e455 | 534 | errno = quit; |
816f5cd2 | 535 | } |
9db2e455 | 536 | |
1e79d00a MG |
537 | if (timed_out) |
538 | errno = ETIMEDOUT; | |
539 | ||
9db2e455 MG |
540 | return -1; |
541 | } | |
813afd12 | 542 | |
62f25bae MG |
543 | void hmcfgusb_enter_bootloader(struct hmcfgusb_dev *dev) |
544 | { | |
545 | uint8_t out[ASYNC_SIZE]; | |
546 | ||
547 | if (dev->bootloader) { | |
548 | fprintf(stderr, "request for bootloader mode, but device already in bootloader!\n"); | |
549 | return; | |
550 | } | |
551 | ||
552 | memset(out, 0, sizeof(out)); | |
553 | out[0] = 'B'; | |
554 | hmcfgusb_send(dev, out, sizeof(out), 1); | |
555 | ||
556 | return; | |
557 | } | |
558 | ||
0ddb3740 MG |
559 | void hmcfgusb_leave_bootloader(struct hmcfgusb_dev *dev) |
560 | { | |
561 | uint8_t out[ASYNC_SIZE]; | |
562 | ||
563 | if (!dev->bootloader) { | |
564 | fprintf(stderr, "request for leaving bootloader mode, but device already in normal mode!\n"); | |
565 | return; | |
566 | } | |
567 | ||
568 | memset(out, 0, sizeof(out)); | |
569 | out[0] = 'K'; | |
570 | hmcfgusb_send(dev, out, sizeof(out), 1); | |
571 | ||
572 | return; | |
573 | } | |
574 | ||
813afd12 MG |
575 | void hmcfgusb_close(struct hmcfgusb_dev *dev) |
576 | { | |
577 | int err; | |
578 | ||
579 | if (dev->transfer) { | |
580 | libusb_cancel_transfer(dev->transfer); | |
018f85fa | 581 | libusb_handle_events(NULL); |
813afd12 MG |
582 | } |
583 | ||
584 | err = libusb_release_interface(dev->usb_devh, INTERFACE); | |
585 | if ((err != 0)) { | |
586 | fprintf(stderr, "Can't release interface: %s\n", usb_strerror(err)); | |
587 | } | |
588 | ||
589 | libusb_close(dev->usb_devh); | |
018f85fa MG |
590 | #ifdef NEED_LIBUSB_EXIT |
591 | hmcfgusb_exit(); | |
592 | #endif | |
e0a7146e | 593 | free(dev->pfd); |
813afd12 | 594 | free(dev); |
018f85fa | 595 | } |
813afd12 | 596 | |
018f85fa MG |
597 | void hmcfgusb_exit(void) |
598 | { | |
599 | if (libusb_initialized) { | |
600 | libusb_exit(NULL); | |
601 | libusb_initialized = 0; | |
602 | } | |
813afd12 | 603 | } |
e75295bb MG |
604 | |
605 | void hmcfgusb_set_debug(int d) | |
606 | { | |
607 | debug = d; | |
608 | } |