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jtag: remove opendous clang warnings
[openocd.git] / src / jtag / drivers / opendous.c
blob165bec6a08a5bf9507b4d46991b3b4665a2d2334
1 /***************************************************************************
2 * *
3 * Copyright (C) 2009 by Cahya Wirawan <cahya@gmx.at> *
4 * Based on opendous driver by Vladimir Fonov *
5 * *
6 * Copyright (C) 2009 by Vladimir Fonov <vladimir.fonov@gmai.com> *
7 * Based on J-link driver by Juergen Stuber *
8 * *
9 * Copyright (C) 2007 by Juergen Stuber <juergen@jstuber.net> *
10 * based on Dominic Rath's and Benedikt Sauter's usbprog.c *
11 * *
12 * Copyright (C) 2008 by Spencer Oliver *
13 * spen@spen-soft.co.uk *
14 * *
15 * This program is free software; you can redistribute it and/or modify *
16 * it under the terms of the GNU General Public License as published by *
17 * the Free Software Foundation; either version 2 of the License, or *
18 * (at your option) any later version. *
19 * *
20 * This program is distributed in the hope that it will be useful, *
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
23 * GNU General Public License for more details. *
24 * *
25 * You should have received a copy of the GNU General Public License *
26 * along with this program; if not, write to the *
27 * Free Software Foundation, Inc., *
28 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
29 ***************************************************************************/
30
31 #ifdef HAVE_CONFIG_H
32 #include "config.h"
33 #endif
34
35 #include <jtag/interface.h>
36 #include <jtag/commands.h>
37 #include "libusb_common.h"
38 #include <string.h>
39 #include <sys/timeb.h>
40 #include <time.h>
41
42 #define ESTICK_VID 0x1781
43 #define ESTICK_PID 0xC0C0
44
45 #define OPENDOUS_VID 0x03EB
46 #define OPENDOUS_PID 0x204F
47
48 /* pid could be specified at runtime */
49 static uint16_t vids[] = { OPENDOUS_VID, ESTICK_VID, 0 };
50 static uint16_t pids[] = { OPENDOUS_PID, ESTICK_PID, 0 };
51
52 #define OPENDOUS_WRITE_ENDPOINT 0x02
53 #define OPENDOUS_READ_ENDPOINT 0x81
54
55 static unsigned int opendous_hw_jtag_version = 1;
56
57 #define OPENDOUS_USB_TIMEOUT 1000
58
59 #define OPENDOUS_USB_BUFFER_SIZE 360
60 #define OPENDOUS_IN_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
61 #define OPENDOUS_OUT_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
62
63 /* Global USB buffers */
64 static uint8_t usb_in_buffer[OPENDOUS_IN_BUFFER_SIZE];
65 static uint8_t usb_out_buffer[OPENDOUS_OUT_BUFFER_SIZE];
66
67 /* Constants for OPENDOUS command */
68
69 #define OPENDOUS_MAX_SPEED 66
70 #define OPENDOUS_MAX_TAP_TRANSMIT 350 /* even number is easier to handle */
71 #define OPENDOUS_MAX_INPUT_DATA (OPENDOUS_MAX_TAP_TRANSMIT*4)
72
73 #define OPENDOUS_TAP_BUFFER_SIZE 65536
74
75 #define MAX_PENDING_SCAN_RESULTS (OPENDOUS_MAX_INPUT_DATA)
76
77 /* JTAG usb commands */
78 #define JTAG_CMD_TAP_OUTPUT 0x0
79 #define JTAG_CMD_SET_TRST 0x1
80 #define JTAG_CMD_SET_SRST 0x2
81 #define JTAG_CMD_READ_INPUT 0x3
82 #define JTAG_CMD_TAP_OUTPUT_EMU 0x4
83 #define JTAG_CMD_SET_DELAY 0x5
84 #define JTAG_CMD_SET_SRST_TRST 0x6
85 #define JTAG_CMD_READ_CONFIG 0x7
86
87 /* External interface functions */
88 static int opendous_execute_queue(void);
89 static int opendous_speed(int speed);
90 static int opendous_speed_div(int speed, int *khz);
91 static int opendous_khz(int khz, int *jtag_speed);
92 static int opendous_init(void);
93 static int opendous_quit(void);
94
95 /* Queue command functions */
96 static void opendous_end_state(tap_state_t state);
97 static void opendous_state_move(void);
98 static void opendous_path_move(int num_states, tap_state_t *path);
99 static void opendous_runtest(int num_cycles);
100 static void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer,
101 int scan_size, struct scan_command *command);
102 static void opendous_reset(int trst, int srst);
103 static void opendous_simple_command(uint8_t command, uint8_t _data);
104 static int opendous_get_status(void);
105
106 /* opendous tap buffer functions */
107 static void opendous_tap_init(void);
108 static int opendous_tap_execute(void);
109 static void opendous_tap_ensure_space(int scans, int bits);
110 static void opendous_tap_append_step(int tms, int tdi);
111 static void opendous_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command);
112
113 /* opendous lowlevel functions */
114 struct opendous_jtag {
115 struct jtag_libusb_device_handle *usb_handle;
116 };
117
118 static struct opendous_jtag *opendous_usb_open(void);
119 static void opendous_usb_close(struct opendous_jtag *opendous_jtag);
120 static int opendous_usb_message(struct opendous_jtag *opendous_jtag, int out_length, int in_length);
121 static int opendous_usb_write(struct opendous_jtag *opendous_jtag, int out_length);
122 static int opendous_usb_read(struct opendous_jtag *opendous_jtag);
123
124 /* helper functions */
125 int opendous_get_version_info(void);
126
127 #ifdef _DEBUG_USB_COMMS_
128 char time_str[50];
129 static void opendous_debug_buffer(uint8_t *buffer, int length);
130 char *opendous_get_time(char *);
131 #endif
132
133 static struct opendous_jtag *opendous_jtag_handle;
134
135 /***************************************************************************/
136 /* External interface implementation */
137
138 COMMAND_HANDLER(opendous_handle_opendous_info_command)
139 {
140 if (opendous_get_version_info() == ERROR_OK) {
141 /* attempt to get status */
142 opendous_get_status();
143 }
144
145 return ERROR_OK;
146 }
147
148 COMMAND_HANDLER(opendous_handle_opendous_hw_jtag_command)
149 {
150 switch (CMD_ARGC) {
151 case 0:
152 command_print(CMD_CTX, "opendous hw jtag %i", opendous_hw_jtag_version);
153 break;
154
155 case 1: {
156 int request_version = atoi(CMD_ARGV[0]);
157 switch (request_version) {
158 case 2:
159 case 3:
160 opendous_hw_jtag_version = request_version;
161 break;
162
163 default:
164 return ERROR_COMMAND_SYNTAX_ERROR;
165 }
166 break;
167 }
168
169 default:
170 return ERROR_COMMAND_SYNTAX_ERROR;
171 }
172
173 return ERROR_OK;
174 }
175
176 static const struct command_registration opendous_command_handlers[] = {
177 {
178 .name = "opendous_info",
179 .handler = &opendous_handle_opendous_info_command,
180 .mode = COMMAND_EXEC,
181 .help = "show opendous info",
182 },
183 {
184 .name = "opendous_hw_jtag",
185 .handler = &opendous_handle_opendous_hw_jtag_command,
186 .mode = COMMAND_EXEC,
187 .help = "access opendous HW JTAG command version",
188 .usage = "[2|3]",
189 },
190 COMMAND_REGISTRATION_DONE
191 };
192
193 struct jtag_interface opendous_interface = {
194 .name = "opendous",
195 .commands = opendous_command_handlers,
196 .execute_queue = opendous_execute_queue,
197 .speed = opendous_speed,
198 .speed_div = opendous_speed_div,
199 .khz = opendous_khz,
200 .init = opendous_init,
201 .quit = opendous_quit,
202 };
203
204 static int opendous_execute_queue(void)
205 {
206 struct jtag_command *cmd = jtag_command_queue;
207 int scan_size;
208 enum scan_type type;
209 uint8_t *buffer;
210
211 while (cmd != NULL) {
212 switch (cmd->type) {
213 case JTAG_RUNTEST:
214 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, \
215 cmd->cmd.runtest->end_state);
216
217 if (cmd->cmd.runtest->end_state != -1)
218 opendous_end_state(cmd->cmd.runtest->end_state);
219 opendous_runtest(cmd->cmd.runtest->num_cycles);
220 break;
221
222 case JTAG_TLR_RESET:
223 DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
224
225 if (cmd->cmd.statemove->end_state != -1)
226 opendous_end_state(cmd->cmd.statemove->end_state);
227 opendous_state_move();
228 break;
229
230 case JTAG_PATHMOVE:
231 DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
232 cmd->cmd.pathmove->num_states, \
233 cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
234
235 opendous_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
236 break;
237
238 case JTAG_SCAN:
239 DEBUG_JTAG_IO("scan end in %i", cmd->cmd.scan->end_state);
240
241 if (cmd->cmd.scan->end_state != -1)
242 opendous_end_state(cmd->cmd.scan->end_state);
243
244 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
245 DEBUG_JTAG_IO("scan input, length = %d", scan_size);
246
247 #ifdef _DEBUG_USB_COMMS_
248 opendous_debug_buffer(buffer, (scan_size + 7) / 8);
249 #endif
250 type = jtag_scan_type(cmd->cmd.scan);
251 opendous_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan);
252 break;
253
254 case JTAG_RESET:
255 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
256
257 opendous_tap_execute();
258
259 if (cmd->cmd.reset->trst == 1)
260 tap_set_state(TAP_RESET);
261 opendous_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
262 break;
263
264 case JTAG_SLEEP:
265 DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
266 opendous_tap_execute();
267 jtag_sleep(cmd->cmd.sleep->us);
268 break;
269
270 default:
271 LOG_ERROR("BUG: unknown JTAG command type encountered");
272 exit(-1);
273 }
274 cmd = cmd->next;
275 }
276 return opendous_tap_execute();
277 }
278
279 /* Sets speed in kHz. */
280 static int opendous_speed(int speed)
281 {
282 if (speed <= OPENDOUS_MAX_SPEED) {
283 /* one day... */
284 return ERROR_OK;
285 } else
286 LOG_INFO("Requested speed %dkHz exceeds maximum of %dkHz, ignored", speed, OPENDOUS_MAX_SPEED);
287
288 return ERROR_OK;
289 }
290
291 static int opendous_speed_div(int speed, int *khz)
292 {
293 *khz = speed;
294
295 return ERROR_OK;
296 }
297
298 static int opendous_khz(int khz, int *jtag_speed)
299 {
300 *jtag_speed = khz;
301 /* TODO: convert this into delay value for opendous */
302
303 return ERROR_OK;
304 }
305
306 static int opendous_init(void)
307 {
308 int check_cnt;
309
310 opendous_jtag_handle = opendous_usb_open();
311
312 if (opendous_jtag_handle == 0) {
313 LOG_ERROR("Cannot find opendous Interface! Please check connection and permissions.");
314 return ERROR_JTAG_INIT_FAILED;
315 }
316
317 check_cnt = 0;
318 while (check_cnt < 3) {
319 if (opendous_get_version_info() == ERROR_OK) {
320 /* attempt to get status */
321 opendous_get_status();
322 break;
323 }
324
325 check_cnt++;
326 }
327
328 LOG_INFO("opendous JTAG Interface ready");
329
330 opendous_reset(0, 0);
331 opendous_tap_init();
332
333 return ERROR_OK;
334 }
335
336 static int opendous_quit(void)
337 {
338 opendous_usb_close(opendous_jtag_handle);
339 return ERROR_OK;
340 }
341
342 /***************************************************************************/
343 /* Queue command implementations */
344
345 void opendous_end_state(tap_state_t state)
346 {
347 if (tap_is_state_stable(state))
348 tap_set_end_state(state);
349 else {
350 LOG_ERROR("BUG: %i is not a valid end state", state);
351 exit(-1);
352 }
353 }
354
355 /* Goes to the end state. */
356 void opendous_state_move(void)
357 {
358 int i;
359 int tms = 0;
360 uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
361 uint8_t tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
362
363 for (i = 0; i < tms_scan_bits; i++) {
364 tms = (tms_scan >> i) & 1;
365 opendous_tap_append_step(tms, 0);
366 }
367
368 tap_set_state(tap_get_end_state());
369 }
370
371 void opendous_path_move(int num_states, tap_state_t *path)
372 {
373 int i;
374
375 for (i = 0; i < num_states; i++) {
376 if (path[i] == tap_state_transition(tap_get_state(), false))
377 opendous_tap_append_step(0, 0);
378 else if (path[i] == tap_state_transition(tap_get_state(), true))
379 opendous_tap_append_step(1, 0);
380 else {
381 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
382 tap_state_name(tap_get_state()), tap_state_name(path[i]));
383 exit(-1);
384 }
385
386 tap_set_state(path[i]);
387 }
388
389 tap_set_end_state(tap_get_state());
390 }
391
392 void opendous_runtest(int num_cycles)
393 {
394 int i;
395
396 tap_state_t saved_end_state = tap_get_end_state();
397
398 /* only do a state_move when we're not already in IDLE */
399 if (tap_get_state() != TAP_IDLE) {
400 opendous_end_state(TAP_IDLE);
401 opendous_state_move();
402 }
403
404 /* execute num_cycles */
405 for (i = 0; i < num_cycles; i++)
406 opendous_tap_append_step(0, 0);
407
408 /* finish in end_state */
409 opendous_end_state(saved_end_state);
410 if (tap_get_state() != tap_get_end_state())
411 opendous_state_move();
412 }
413
414 void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command)
415 {
416 tap_state_t saved_end_state;
417
418 opendous_tap_ensure_space(1, scan_size + 8);
419
420 saved_end_state = tap_get_end_state();
421
422 /* Move to appropriate scan state */
423 opendous_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
424
425 opendous_state_move();
426 opendous_end_state(saved_end_state);
427
428 /* Scan */
429 opendous_tap_append_scan(scan_size, buffer, command);
430
431 /* We are in Exit1, go to Pause */
432 opendous_tap_append_step(0, 0);
433
434 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
435
436 if (tap_get_state() != tap_get_end_state())
437 opendous_state_move();
438 }
439
440 void opendous_reset(int trst, int srst)
441 {
442 LOG_DEBUG("trst: %i, srst: %i", trst, srst);
443
444 /* Signals are active low */
445 #if 0
446 if (srst == 0)
447 opendous_simple_command(JTAG_CMD_SET_SRST, 1);
448 else if (srst == 1)
449 opendous_simple_command(JTAG_CMD_SET_SRST, 0);
450
451 if (trst == 0)
452 opendous_simple_command(JTAG_CMD_SET_TRST, 1);
453 else if (trst == 1)
454 opendous_simple_command(JTAG_CMD_SET_TRST, 0);
455 #endif
456
457 srst = srst ? 0 : 1;
458 trst = trst ? 0 : 2;
459 opendous_simple_command(JTAG_CMD_SET_SRST_TRST, srst | trst);
460 }
461
462 void opendous_simple_command(uint8_t command, uint8_t _data)
463 {
464 int result;
465
466 DEBUG_JTAG_IO("0x%02x 0x%02x", command, _data);
467
468 usb_out_buffer[0] = (uint16_t) 2;
469 usb_out_buffer[2] = command;
470 usb_out_buffer[3] = _data;
471
472 result = opendous_usb_message(opendous_jtag_handle, 4, 1);
473 if (result != 1)
474 LOG_ERROR("opendous command 0x%02x failed (%d)", command, result);
475 }
476
477 int opendous_get_status(void)
478 {
479 return ERROR_OK;
480 }
481
482 int opendous_get_version_info(void)
483 {
484 return ERROR_OK;
485 }
486
487 /***************************************************************************/
488 /* Estick tap functions */
489
490 static int tap_length;
491 static uint8_t tms_buffer[OPENDOUS_TAP_BUFFER_SIZE];
492 static uint8_t tdo_buffer[OPENDOUS_TAP_BUFFER_SIZE];
493
494 struct pending_scan_result {
495 int first; /* First bit position in tdo_buffer to read */
496 int length; /* Number of bits to read */
497 struct scan_command *command; /* Corresponding scan command */
498 uint8_t *buffer;
499 };
500
501 static int pending_scan_results_length;
502 static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
503
504 static int last_tms;
505
506 void opendous_tap_init(void)
507 {
508 tap_length = 0;
509 pending_scan_results_length = 0;
510 }
511
512 void opendous_tap_ensure_space(int scans, int bits)
513 {
514 int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
515
516 if (scans > available_scans)
517 opendous_tap_execute();
518 }
519
520 void opendous_tap_append_step(int tms, int tdi)
521 {
522 last_tms = tms;
523 unsigned char _tms = tms ? 1 : 0;
524 unsigned char _tdi = tdi ? 1 : 0;
525
526 int tap_index = tap_length / 4;
527 int bits = (tap_length % 4) * 2;
528
529 if (tap_length < OPENDOUS_TAP_BUFFER_SIZE) {
530 if (!bits)
531 tms_buffer[tap_index] = 0;
532
533 tms_buffer[tap_index] |= (_tdi << bits)|(_tms << (bits + 1)) ;
534 tap_length++;
535 } else
536 LOG_ERROR("opendous_tap_append_step, overflow");
537 }
538
539 void opendous_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command)
540 {
541 DEBUG_JTAG_IO("append scan, length = %d", length);
542
543 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
544 int i;
545
546 pending_scan_result->first = tap_length;
547 pending_scan_result->length = length;
548 pending_scan_result->command = command;
549 pending_scan_result->buffer = buffer;
550
551 for (i = 0; i < length; i++)
552 opendous_tap_append_step((i < length-1 ? 0 : 1), (buffer[i / 8] >> (i % 8)) & 1);
553 pending_scan_results_length++;
554 }
555
556 /* Pad and send a tap sequence to the device, and receive the answer.
557 * For the purpose of padding we assume that we are in idle or pause state. */
558 int opendous_tap_execute(void)
559 {
560 int byte_length;
561 int i, j;
562 int result;
563
564 #ifdef _DEBUG_USB_COMMS_
565 int byte_length_out;
566 #endif
567
568 if (tap_length > 0) {
569
570 /* memset(tdo_buffer,0,OPENDOUS_TAP_BUFFER_SIZE); */
571 /* LOG_INFO("OPENDOUS tap execute %d",tap_length); */
572 byte_length = (tap_length + 3) / 4;
573
574 #ifdef _DEBUG_USB_COMMS_
575 byte_length_out = (tap_length + 7) / 8;
576 LOG_DEBUG("opendous is sending %d bytes", byte_length);
577 #endif
578
579 for (j = 0, i = 0; j < byte_length;) {
580
581 int recieve;
582 int transmit = byte_length - j;
583 if (transmit > OPENDOUS_MAX_TAP_TRANSMIT) {
584 transmit = OPENDOUS_MAX_TAP_TRANSMIT;
585 recieve = (OPENDOUS_MAX_TAP_TRANSMIT) / 2;
586 usb_out_buffer[2] = JTAG_CMD_TAP_OUTPUT;
587 } else {
588 usb_out_buffer[2] = JTAG_CMD_TAP_OUTPUT | ((tap_length % 4) << 4);
589 recieve = (transmit + 1) / 2;
590 }
591 usb_out_buffer[0] = (transmit + 1) & 0xff;
592 usb_out_buffer[1] = ((transmit + 1) >> 8) & 0xff;
593
594 memmove(usb_out_buffer + 3, tms_buffer + j, transmit);
595 result = opendous_usb_message(opendous_jtag_handle, 3 + transmit, recieve);
596 if (result != recieve) {
597 LOG_ERROR("opendous_tap_execute, wrong result %d, expected %d", result, recieve);
598 return ERROR_JTAG_QUEUE_FAILED;
599 }
600
601 memmove(tdo_buffer + i, usb_in_buffer, recieve);
602 i += recieve;
603 j += transmit;
604 }
605
606 #ifdef _DEBUG_USB_COMMS_
607 LOG_DEBUG("opendous tap result %d", byte_length_out);
608 opendous_debug_buffer(tdo_buffer, byte_length_out);
609 #endif
610
611 /* LOG_INFO("eStick tap execute %d",tap_length); */
612 for (i = 0; i < pending_scan_results_length; i++) {
613
614 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
615 uint8_t *buffer = pending_scan_result->buffer;
616 int length = pending_scan_result->length;
617 int first = pending_scan_result->first;
618 struct scan_command *command = pending_scan_result->command;
619
620 /* Copy to buffer */
621 buf_set_buf(tdo_buffer, first, buffer, 0, length);
622
623 DEBUG_JTAG_IO("pending scan result, length = %d", length);
624
625 #ifdef _DEBUG_USB_COMMS_
626 opendous_debug_buffer(buffer, byte_length_out);
627 #endif
628
629 if (jtag_read_buffer(buffer, command) != ERROR_OK) {
630 opendous_tap_init();
631 return ERROR_JTAG_QUEUE_FAILED;
632 }
633
634 if (pending_scan_result->buffer != NULL)
635 free(pending_scan_result->buffer);
636 }
637
638 opendous_tap_init();
639 }
640
641 return ERROR_OK;
642 }
643
644 /*****************************************************************************/
645 /* Estick USB low-level functions */
646
647 struct opendous_jtag *opendous_usb_open(void)
648 {
649 struct opendous_jtag *result;
650
651 struct jtag_libusb_device_handle *devh;
652 if (jtag_libusb_open(vids, pids, &devh) != ERROR_OK)
653 return NULL;
654
655 jtag_libusb_set_configuration(devh, 0);
656 jtag_libusb_claim_interface(devh, 0);
657
658 result = (struct opendous_jtag *) malloc(sizeof(struct opendous_jtag));
659 result->usb_handle = devh;
660 return result;
661 }
662
663 void opendous_usb_close(struct opendous_jtag *opendous_jtag)
664 {
665 jtag_libusb_close(opendous_jtag->usb_handle);
666 free(opendous_jtag);
667 }
668
669 /* Send a message and receive the reply. */
670 int opendous_usb_message(struct opendous_jtag *opendous_jtag, int out_length, int in_length)
671 {
672 int result;
673
674 result = opendous_usb_write(opendous_jtag, out_length);
675 if (result == out_length) {
676 result = opendous_usb_read(opendous_jtag);
677 if (result == in_length)
678 return result;
679 else {
680 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length, result);
681 return -1;
682 }
683 } else {
684 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length, result);
685 return -1;
686 }
687 }
688
689 /* Write data from out_buffer to USB. */
690 int opendous_usb_write(struct opendous_jtag *opendous_jtag, int out_length)
691 {
692 int result;
693
694 if (out_length > OPENDOUS_OUT_BUFFER_SIZE) {
695 LOG_ERROR("opendous_jtag_write illegal out_length=%d (max=%d)", out_length, OPENDOUS_OUT_BUFFER_SIZE);
696 return -1;
697 }
698
699 #ifdef _DEBUG_USB_COMMS_
700 LOG_DEBUG("%s: USB write begin", opendous_get_time(time_str));
701 #endif
702 result = jtag_libusb_bulk_write(opendous_jtag->usb_handle, OPENDOUS_WRITE_ENDPOINT, \
703 (char *)usb_out_buffer, out_length, OPENDOUS_USB_TIMEOUT);
704 #ifdef _DEBUG_USB_COMMS_
705 LOG_DEBUG("%s: USB write end: %d bytes", opendous_get_time(time_str), result);
706 #endif
707
708 DEBUG_JTAG_IO("opendous_usb_write, out_length = %d, result = %d", out_length, result);
709
710 #ifdef _DEBUG_USB_COMMS_
711 opendous_debug_buffer(usb_out_buffer, out_length);
712 #endif
713 return result;
714 }
715
716 /* Read data from USB into in_buffer. */
717 int opendous_usb_read(struct opendous_jtag *opendous_jtag)
718 {
719 #ifdef _DEBUG_USB_COMMS_
720 LOG_DEBUG("%s: USB read begin", opendous_get_time(time_str));
721 #endif
722 int result = jtag_libusb_bulk_read(opendous_jtag->usb_handle, OPENDOUS_READ_ENDPOINT,
723 (char *)usb_in_buffer, OPENDOUS_IN_BUFFER_SIZE, OPENDOUS_USB_TIMEOUT);
724 #ifdef _DEBUG_USB_COMMS_
725 LOG_DEBUG("%s: USB read end: %d bytes", opendous_get_time(time_str), result);
726 #endif
727 DEBUG_JTAG_IO("opendous_usb_read, result = %d", result);
728
729 #ifdef _DEBUG_USB_COMMS_
730 opendous_debug_buffer(usb_in_buffer, result);
731 #endif
732 return result;
733 }
734
735 #ifdef _DEBUG_USB_COMMS_
736 #define BYTES_PER_LINE 16
737
738 void opendous_debug_buffer(uint8_t *buffer, int length)
739 {
740 char line[81];
741 char s[4];
742 int i;
743 int j;
744
745 for (i = 0; i < length; i += BYTES_PER_LINE) {
746 snprintf(line, 5, "%04x", i);
747 for (j = i; j < i + BYTES_PER_LINE && j < length; j++) {
748 snprintf(s, 4, " %02x", buffer[j]);
749 strcat(line, s);
750 }
751 LOG_DEBUG("%s", line);
752 }
753 }
754
755 char *opendous_get_time(char *str)
756 {
757 struct timeb timebuffer;
758 char *timeline;
759
760 ftime(&timebuffer);
761 timeline = ctime(&(timebuffer.time));
762 snprintf(str, 49, "%.8s.%hu", &timeline[11], timebuffer.millitm);
763 return str;
764 }
765 #endif
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