Code Review / openocd.git / blob
? search:


2f8b524f7cacc50f5e4ac073984387ae52ffc536
[openocd.git] / src / jtag / drivers / opendous.c
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, see <http://www.gnu.org/licenses/>. *
27 ***************************************************************************/
28
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include <jtag/interface.h>
34 #include <jtag/commands.h>
35 #include "libusb_common.h"
36 #include <string.h>
37 #include <time.h>
38
39 #define OPENDOUS_MAX_VIDS_PIDS 4
40 /* define some probes with similar interface */
41 struct opendous_probe {
42 const char *name;
43 uint16_t VID[OPENDOUS_MAX_VIDS_PIDS];
44 uint16_t PID[OPENDOUS_MAX_VIDS_PIDS];
45 uint8_t READ_EP;
46 uint8_t WRITE_EP;
47 uint8_t CONTROL_TRANSFER;
48 int BUFFERSIZE;
49 };
50
51 static const struct opendous_probe opendous_probes[] = {
52 {"usbprog-jtag", {0x1781, 0}, {0x0C63, 0}, 0x82, 0x02, 0x00, 510 },
53 {"opendous", {0x1781, 0x03EB, 0}, {0xC0C0, 0x204F, 0}, 0x81, 0x02, 0x00, 360 },
54 {"usbvlab", {0x16C0, 0}, {0x05DC, 0}, 0x81, 0x02, 0x01, 360 },
55 {NULL, {0x0000}, {0x0000}, 0x00, 0x00, 0x00, 0 }
56 };
57
58 #define OPENDOUS_WRITE_ENDPOINT (opendous_probe->WRITE_EP)
59 #define OPENDOUS_READ_ENDPOINT (opendous_probe->READ_EP)
60
61 static unsigned int opendous_hw_jtag_version = 1;
62
63 #define OPENDOUS_USB_TIMEOUT 1000
64
65 #define OPENDOUS_USB_BUFFER_SIZE (opendous_probe->BUFFERSIZE)
66 #define OPENDOUS_IN_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
67 #define OPENDOUS_OUT_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
68
69 /* Global USB buffers */
70 static uint8_t *usb_in_buffer;
71 static uint8_t *usb_out_buffer;
72
73 /* Constants for OPENDOUS command */
74
75 #define OPENDOUS_MAX_SPEED 66
76 #define OPENDOUS_MAX_TAP_TRANSMIT ((opendous_probe->BUFFERSIZE)-10)
77 #define OPENDOUS_MAX_INPUT_DATA (OPENDOUS_MAX_TAP_TRANSMIT*4)
78
79 /* TAP */
80 #define OPENDOUS_TAP_BUFFER_SIZE 65536
81
82 struct pending_scan_result {
83 int first; /* First bit position in tdo_buffer to read */
84 int length; /* Number of bits to read */
85 struct scan_command *command; /* Corresponding scan command */
86 uint8_t *buffer;
87 };
88
89 static int pending_scan_results_length;
90 static struct pending_scan_result *pending_scan_results_buffer;
91
92 #define MAX_PENDING_SCAN_RESULTS (OPENDOUS_MAX_INPUT_DATA)
93
94 /* JTAG usb commands */
95 #define JTAG_CMD_TAP_OUTPUT 0x0
96 #define JTAG_CMD_SET_TRST 0x1
97 #define JTAG_CMD_SET_SRST 0x2
98 #define JTAG_CMD_READ_INPUT 0x3
99 #define JTAG_CMD_TAP_OUTPUT_EMU 0x4
100 #define JTAG_CMD_SET_DELAY 0x5
101 #define JTAG_CMD_SET_SRST_TRST 0x6
102 #define JTAG_CMD_READ_CONFIG 0x7
103
104 /* usbvlab control transfer */
105 #define FUNC_START_BOOTLOADER 30
106 #define FUNC_WRITE_DATA 0x50
107 #define FUNC_READ_DATA 0x51
108
109 static char *opendous_type;
110 static const struct opendous_probe *opendous_probe;
111
112 /* External interface functions */
113 static int opendous_execute_queue(void);
114 static int opendous_init(void);
115 static int opendous_quit(void);
116
117 /* Queue command functions */
118 static void opendous_end_state(tap_state_t state);
119 static void opendous_state_move(void);
120 static void opendous_path_move(int num_states, tap_state_t *path);
121 static void opendous_runtest(int num_cycles);
122 static void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer,
123 int scan_size, struct scan_command *command);
124 static void opendous_reset(int trst, int srst);
125 static void opendous_simple_command(uint8_t command, uint8_t _data);
126 static int opendous_get_status(void);
127
128 /* opendous tap buffer functions */
129 static void opendous_tap_init(void);
130 static int opendous_tap_execute(void);
131 static void opendous_tap_ensure_space(int scans, int bits);
132 static void opendous_tap_append_step(int tms, int tdi);
133 static void opendous_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command);
134
135 /* opendous lowlevel functions */
136 struct opendous_jtag {
137 struct jtag_libusb_device_handle *usb_handle;
138 };
139
140 static struct opendous_jtag *opendous_usb_open(void);
141 static void opendous_usb_close(struct opendous_jtag *opendous_jtag);
142 static int opendous_usb_message(struct opendous_jtag *opendous_jtag, int out_length, int in_length);
143 static int opendous_usb_write(struct opendous_jtag *opendous_jtag, int out_length);
144 static int opendous_usb_read(struct opendous_jtag *opendous_jtag);
145
146 /* helper functions */
147 int opendous_get_version_info(void);
148
149 #ifdef _DEBUG_USB_COMMS_
150 static void opendous_debug_buffer(uint8_t *buffer, int length);
151 #endif
152
153 static struct opendous_jtag *opendous_jtag_handle;
154
155 /***************************************************************************/
156 /* External interface implementation */
157
158 COMMAND_HANDLER(opendous_handle_opendous_type_command)
159 {
160 if (CMD_ARGC == 0)
161 return ERROR_OK;
162
163 /* only if the cable name wasn't overwritten by cmdline */
164 if (opendous_type == NULL) {
165 /* REVISIT first verify that it's listed in cables[] ... */
166 opendous_type = strdup(CMD_ARGV[0]);
167 }
168
169 /* REVISIT it's probably worth returning the current value ... */
170
171 return ERROR_OK;
172 }
173
174 COMMAND_HANDLER(opendous_handle_opendous_info_command)
175 {
176 if (opendous_get_version_info() == ERROR_OK) {
177 /* attempt to get status */
178 opendous_get_status();
179 }
180
181 return ERROR_OK;
182 }
183
184 COMMAND_HANDLER(opendous_handle_opendous_hw_jtag_command)
185 {
186 switch (CMD_ARGC) {
187 case 0:
188 command_print(CMD, "opendous hw jtag %i", opendous_hw_jtag_version);
189 break;
190
191 case 1: {
192 int request_version = atoi(CMD_ARGV[0]);
193 switch (request_version) {
194 case 2:
195 case 3:
196 opendous_hw_jtag_version = request_version;
197 break;
198
199 default:
200 return ERROR_COMMAND_SYNTAX_ERROR;
201 }
202 break;
203 }
204
205 default:
206 return ERROR_COMMAND_SYNTAX_ERROR;
207 }
208
209 return ERROR_OK;
210 }
211
212 static const struct command_registration opendous_command_handlers[] = {
213 {
214 .name = "opendous_info",
215 .handler = &opendous_handle_opendous_info_command,
216 .mode = COMMAND_EXEC,
217 .help = "show opendous info",
218 .usage = "",
219 },
220 {
221 .name = "opendous_hw_jtag",
222 .handler = &opendous_handle_opendous_hw_jtag_command,
223 .mode = COMMAND_EXEC,
224 .help = "access opendous HW JTAG command version",
225 .usage = "[2|3]",
226 },
227 {
228 .name = "opendous_type",
229 .handler = &opendous_handle_opendous_type_command,
230 .mode = COMMAND_CONFIG,
231 .help = "set opendous type",
232 .usage = "[usbvlab|usbprog-jtag|opendous]",
233 },
234 COMMAND_REGISTRATION_DONE
235 };
236
237 struct jtag_interface opendous_interface = {
238 .name = "opendous",
239 .commands = opendous_command_handlers,
240 .execute_queue = opendous_execute_queue,
241 .init = opendous_init,
242 .quit = opendous_quit,
243 };
244
245 static int opendous_execute_queue(void)
246 {
247 struct jtag_command *cmd = jtag_command_queue;
248 int scan_size;
249 enum scan_type type;
250 uint8_t *buffer;
251
252 while (cmd != NULL) {
253 switch (cmd->type) {
254 case JTAG_RUNTEST:
255 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, \
256 cmd->cmd.runtest->end_state);
257
258 if (cmd->cmd.runtest->end_state != -1)
259 opendous_end_state(cmd->cmd.runtest->end_state);
260 opendous_runtest(cmd->cmd.runtest->num_cycles);
261 break;
262
263 case JTAG_TLR_RESET:
264 DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
265
266 if (cmd->cmd.statemove->end_state != -1)
267 opendous_end_state(cmd->cmd.statemove->end_state);
268 opendous_state_move();
269 break;
270
271 case JTAG_PATHMOVE:
272 DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
273 cmd->cmd.pathmove->num_states, \
274 cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
275
276 opendous_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
277 break;
278
279 case JTAG_SCAN:
280 DEBUG_JTAG_IO("scan end in %i", cmd->cmd.scan->end_state);
281
282 if (cmd->cmd.scan->end_state != -1)
283 opendous_end_state(cmd->cmd.scan->end_state);
284
285 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
286 DEBUG_JTAG_IO("scan input, length = %d", scan_size);
287
288 #ifdef _DEBUG_USB_COMMS_
289 opendous_debug_buffer(buffer, (scan_size + 7) / 8);
290 #endif
291 type = jtag_scan_type(cmd->cmd.scan);
292 opendous_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan);
293 break;
294
295 case JTAG_RESET:
296 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
297
298 opendous_tap_execute();
299
300 if (cmd->cmd.reset->trst == 1)
301 tap_set_state(TAP_RESET);
302 opendous_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
303 break;
304
305 case JTAG_SLEEP:
306 DEBUG_JTAG_IO("sleep %" PRIi32, cmd->cmd.sleep->us);
307 opendous_tap_execute();
308 jtag_sleep(cmd->cmd.sleep->us);
309 break;
310
311 default:
312 LOG_ERROR("BUG: unknown JTAG command type encountered");
313 exit(-1);
314 }
315 cmd = cmd->next;
316 }
317 return opendous_tap_execute();
318 }
319
320 static int opendous_init(void)
321 {
322 int check_cnt;
323 const struct opendous_probe *cur_opendous_probe;
324
325 cur_opendous_probe = opendous_probes;
326
327 if (opendous_type == NULL) {
328 opendous_type = strdup("opendous");
329 LOG_WARNING("No opendous_type specified, using default 'opendous'");
330 }
331
332 while (cur_opendous_probe->name) {
333 if (strcmp(cur_opendous_probe->name, opendous_type) == 0) {
334 opendous_probe = cur_opendous_probe;
335 break;
336 }
337 cur_opendous_probe++;
338 }
339
340 if (!opendous_probe) {
341 LOG_ERROR("No matching cable found for %s", opendous_type);
342 return ERROR_JTAG_INIT_FAILED;
343 }
344
345
346 usb_in_buffer = malloc(opendous_probe->BUFFERSIZE);
347 usb_out_buffer = malloc(opendous_probe->BUFFERSIZE);
348
349 pending_scan_results_buffer = malloc(
350 MAX_PENDING_SCAN_RESULTS * sizeof(*pending_scan_results_buffer));
351
352 opendous_jtag_handle = opendous_usb_open();
353
354 if (opendous_jtag_handle == 0) {
355 LOG_ERROR("Cannot find opendous Interface! Please check connection and permissions.");
356 return ERROR_JTAG_INIT_FAILED;
357 }
358
359 check_cnt = 0;
360 while (check_cnt < 3) {
361 if (opendous_get_version_info() == ERROR_OK) {
362 /* attempt to get status */
363 opendous_get_status();
364 break;
365 }
366
367 check_cnt++;
368 }
369
370 LOG_INFO("opendous JTAG Interface ready");
371
372 opendous_reset(0, 0);
373 opendous_tap_init();
374
375 return ERROR_OK;
376 }
377
378 static int opendous_quit(void)
379 {
380 opendous_usb_close(opendous_jtag_handle);
381
382 if (usb_out_buffer) {
383 free(usb_out_buffer);
384 usb_out_buffer = NULL;
385 }
386
387 if (usb_in_buffer) {
388 free(usb_in_buffer);
389 usb_in_buffer = NULL;
390 }
391
392 if (pending_scan_results_buffer) {
393 free(pending_scan_results_buffer);
394 pending_scan_results_buffer = NULL;
395 }
396
397 if (opendous_type) {
398 free(opendous_type);
399 opendous_type = NULL;
400 }
401
402 return ERROR_OK;
403 }
404
405 /***************************************************************************/
406 /* Queue command implementations */
407
408 void opendous_end_state(tap_state_t state)
409 {
410 if (tap_is_state_stable(state))
411 tap_set_end_state(state);
412 else {
413 LOG_ERROR("BUG: %i is not a valid end state", state);
414 exit(-1);
415 }
416 }
417
418 /* Goes to the end state. */
419 void opendous_state_move(void)
420 {
421 int i;
422 int tms = 0;
423 uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
424 uint8_t tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
425
426 for (i = 0; i < tms_scan_bits; i++) {
427 tms = (tms_scan >> i) & 1;
428 opendous_tap_append_step(tms, 0);
429 }
430
431 tap_set_state(tap_get_end_state());
432 }
433
434 void opendous_path_move(int num_states, tap_state_t *path)
435 {
436 int i;
437
438 for (i = 0; i < num_states; i++) {
439 if (path[i] == tap_state_transition(tap_get_state(), false))
440 opendous_tap_append_step(0, 0);
441 else if (path[i] == tap_state_transition(tap_get_state(), true))
442 opendous_tap_append_step(1, 0);
443 else {
444 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
445 tap_state_name(tap_get_state()), tap_state_name(path[i]));
446 exit(-1);
447 }
448
449 tap_set_state(path[i]);
450 }
451
452 tap_set_end_state(tap_get_state());
453 }
454
455 void opendous_runtest(int num_cycles)
456 {
457 int i;
458
459 tap_state_t saved_end_state = tap_get_end_state();
460
461 /* only do a state_move when we're not already in IDLE */
462 if (tap_get_state() != TAP_IDLE) {
463 opendous_end_state(TAP_IDLE);
464 opendous_state_move();
465 }
466
467 /* execute num_cycles */
468 for (i = 0; i < num_cycles; i++)
469 opendous_tap_append_step(0, 0);
470
471 /* finish in end_state */
472 opendous_end_state(saved_end_state);
473 if (tap_get_state() != tap_get_end_state())
474 opendous_state_move();
475 }
476
477 void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command)
478 {
479 tap_state_t saved_end_state;
480
481 opendous_tap_ensure_space(1, scan_size + 8);
482
483 saved_end_state = tap_get_end_state();
484
485 /* Move to appropriate scan state */
486 opendous_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
487
488 if (tap_get_state() != tap_get_end_state())
489 opendous_state_move();
490
491 opendous_end_state(saved_end_state);
492
493 /* Scan */
494 opendous_tap_append_scan(scan_size, buffer, command);
495
496 /* We are in Exit1, go to Pause */
497 opendous_tap_append_step(0, 0);
498
499 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
500
501 if (tap_get_state() != tap_get_end_state())
502 opendous_state_move();
503 }
504
505 void opendous_reset(int trst, int srst)
506 {
507 LOG_DEBUG("trst: %i, srst: %i", trst, srst);
508
509 /* Signals are active low */
510 #if 0
511 if (srst == 0)
512 opendous_simple_command(JTAG_CMD_SET_SRST, 1);
513 else if (srst == 1)
514 opendous_simple_command(JTAG_CMD_SET_SRST, 0);
515
516 if (trst == 0)
517 opendous_simple_command(JTAG_CMD_SET_TRST, 1);
518 else if (trst == 1)
519 opendous_simple_command(JTAG_CMD_SET_TRST, 0);
520 #endif
521
522 srst = srst ? 0 : 1;
523 trst = trst ? 0 : 2;
524 opendous_simple_command(JTAG_CMD_SET_SRST_TRST, srst | trst);
525 }
526
527 void opendous_simple_command(uint8_t command, uint8_t _data)
528 {
529 int result;
530
531 DEBUG_JTAG_IO("0x%02x 0x%02x", command, _data);
532
533 usb_out_buffer[0] = 2;
534 usb_out_buffer[1] = 0;
535 usb_out_buffer[2] = command;
536 usb_out_buffer[3] = _data;
537
538 result = opendous_usb_message(opendous_jtag_handle, 4, 1);
539 if (result != 1)
540 LOG_ERROR("opendous command 0x%02x failed (%d)", command, result);
541 }
542
543 int opendous_get_status(void)
544 {
545 return ERROR_OK;
546 }
547
548 int opendous_get_version_info(void)
549 {
550 return ERROR_OK;
551 }
552
553 /***************************************************************************/
554 /* Estick tap functions */
555
556 static int tap_length;
557 static uint8_t tms_buffer[OPENDOUS_TAP_BUFFER_SIZE];
558 static uint8_t tdo_buffer[OPENDOUS_TAP_BUFFER_SIZE];
559
560 static int last_tms;
561
562 void opendous_tap_init(void)
563 {
564 tap_length = 0;
565 pending_scan_results_length = 0;
566 }
567
568 void opendous_tap_ensure_space(int scans, int bits)
569 {
570 int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
571 int available_bits = OPENDOUS_TAP_BUFFER_SIZE / 2 - tap_length;
572
573 if ((scans > available_scans) || (bits > available_bits))
574 opendous_tap_execute();
575 }
576
577 void opendous_tap_append_step(int tms, int tdi)
578 {
579 last_tms = tms;
580 unsigned char _tms = tms ? 1 : 0;
581 unsigned char _tdi = tdi ? 1 : 0;
582
583 opendous_tap_ensure_space(0, 1);
584
585 int tap_index = tap_length / 4;
586 int bits = (tap_length % 4) * 2;
587
588 if (tap_length < OPENDOUS_TAP_BUFFER_SIZE) {
589 if (!bits)
590 tms_buffer[tap_index] = 0;
591
592 tms_buffer[tap_index] |= (_tdi << bits)|(_tms << (bits + 1)) ;
593 tap_length++;
594 } else
595 LOG_ERROR("opendous_tap_append_step, overflow");
596 }
597
598 void opendous_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command)
599 {
600 DEBUG_JTAG_IO("append scan, length = %d", length);
601
602 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
603 int i;
604
605 pending_scan_result->first = tap_length;
606 pending_scan_result->length = length;
607 pending_scan_result->command = command;
608 pending_scan_result->buffer = buffer;
609
610 for (i = 0; i < length; i++)
611 opendous_tap_append_step((i < length-1 ? 0 : 1), (buffer[i / 8] >> (i % 8)) & 1);
612 pending_scan_results_length++;
613 }
614
615 /* Pad and send a tap sequence to the device, and receive the answer.
616 * For the purpose of padding we assume that we are in idle or pause state. */
617 int opendous_tap_execute(void)
618 {
619 int byte_length;
620 int i, j;
621 int result;
622
623 #ifdef _DEBUG_USB_COMMS_
624 int byte_length_out;
625 #endif
626
627 if (tap_length > 0) {
628
629 /* memset(tdo_buffer,0,OPENDOUS_TAP_BUFFER_SIZE); */
630 /* LOG_INFO("OPENDOUS tap execute %d",tap_length); */
631 byte_length = (tap_length + 3) / 4;
632
633 #ifdef _DEBUG_USB_COMMS_
634 byte_length_out = (tap_length + 7) / 8;
635 LOG_DEBUG("opendous is sending %d bytes", byte_length);
636 #endif
637
638 for (j = 0, i = 0; j < byte_length;) {
639
640 int receive;
641 int transmit = byte_length - j;
642 if (transmit > OPENDOUS_MAX_TAP_TRANSMIT) {
643 transmit = OPENDOUS_MAX_TAP_TRANSMIT;
644 receive = (OPENDOUS_MAX_TAP_TRANSMIT) / 2;
645 usb_out_buffer[2] = JTAG_CMD_TAP_OUTPUT;
646 } else {
647 usb_out_buffer[2] = JTAG_CMD_TAP_OUTPUT | ((tap_length % 4) << 4);
648 receive = (transmit + 1) / 2;
649 }
650 usb_out_buffer[0] = (transmit + 1) & 0xff;
651 usb_out_buffer[1] = ((transmit + 1) >> 8) & 0xff;
652
653 memmove(usb_out_buffer + 3, tms_buffer + j, transmit);
654 result = opendous_usb_message(opendous_jtag_handle, 3 + transmit, receive);
655 if (result != receive) {
656 LOG_ERROR("opendous_tap_execute, wrong result %d, expected %d", result, receive);
657 return ERROR_JTAG_QUEUE_FAILED;
658 }
659
660 memmove(tdo_buffer + i, usb_in_buffer, receive);
661 i += receive;
662 j += transmit;
663 }
664
665 #ifdef _DEBUG_USB_COMMS_
666 LOG_DEBUG("opendous tap result %d", byte_length_out);
667 opendous_debug_buffer(tdo_buffer, byte_length_out);
668 #endif
669
670 /* LOG_INFO("eStick tap execute %d",tap_length); */
671 for (i = 0; i < pending_scan_results_length; i++) {
672
673 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
674 uint8_t *buffer = pending_scan_result->buffer;
675 int length = pending_scan_result->length;
676 int first = pending_scan_result->first;
677 struct scan_command *command = pending_scan_result->command;
678
679 /* Copy to buffer */
680 buf_set_buf(tdo_buffer, first, buffer, 0, length);
681
682 DEBUG_JTAG_IO("pending scan result, length = %d", length);
683
684 #ifdef _DEBUG_USB_COMMS_
685 opendous_debug_buffer(buffer, byte_length_out);
686 #endif
687
688 if (jtag_read_buffer(buffer, command) != ERROR_OK) {
689 opendous_tap_init();
690 return ERROR_JTAG_QUEUE_FAILED;
691 }
692
693 if (pending_scan_result->buffer != NULL)
694 free(pending_scan_result->buffer);
695 }
696
697 opendous_tap_init();
698 }
699
700 return ERROR_OK;
701 }
702
703 /*****************************************************************************/
704 /* Estick USB low-level functions */
705
706 struct opendous_jtag *opendous_usb_open(void)
707 {
708 struct opendous_jtag *result;
709
710 struct jtag_libusb_device_handle *devh;
711 if (jtag_libusb_open(opendous_probe->VID, opendous_probe->PID, NULL, &devh) != ERROR_OK)
712 return NULL;
713
714 jtag_libusb_set_configuration(devh, 0);
715 jtag_libusb_claim_interface(devh, 0);
716
717 result = malloc(sizeof(*result));
718 result->usb_handle = devh;
719 return result;
720 }
721
722 void opendous_usb_close(struct opendous_jtag *opendous_jtag)
723 {
724 jtag_libusb_close(opendous_jtag->usb_handle);
725 free(opendous_jtag);
726 }
727
728 /* Send a message and receive the reply. */
729 int opendous_usb_message(struct opendous_jtag *opendous_jtag, int out_length, int in_length)
730 {
731 int result;
732
733 result = opendous_usb_write(opendous_jtag, out_length);
734 if (result == out_length) {
735 result = opendous_usb_read(opendous_jtag);
736 if (result == in_length)
737 return result;
738 else {
739 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length, result);
740 return -1;
741 }
742 } else {
743 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length, result);
744 return -1;
745 }
746 }
747
748 /* Write data from out_buffer to USB. */
749 int opendous_usb_write(struct opendous_jtag *opendous_jtag, int out_length)
750 {
751 int result;
752
753 if (out_length > OPENDOUS_OUT_BUFFER_SIZE) {
754 LOG_ERROR("opendous_jtag_write illegal out_length=%d (max=%d)", out_length, OPENDOUS_OUT_BUFFER_SIZE);
755 return -1;
756 }
757
758 #ifdef _DEBUG_USB_COMMS_
759 LOG_DEBUG("USB write begin");
760 #endif
761 if (opendous_probe->CONTROL_TRANSFER) {
762 result = jtag_libusb_control_transfer(opendous_jtag->usb_handle,
763 LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT,
764 FUNC_WRITE_DATA, 0, 0, (char *) usb_out_buffer, out_length, OPENDOUS_USB_TIMEOUT);
765 } else {
766 result = jtag_libusb_bulk_write(opendous_jtag->usb_handle, OPENDOUS_WRITE_ENDPOINT, \
767 (char *)usb_out_buffer, out_length, OPENDOUS_USB_TIMEOUT);
768 }
769 #ifdef _DEBUG_USB_COMMS_
770 LOG_DEBUG("USB write end: %d bytes", result);
771 #endif
772
773 DEBUG_JTAG_IO("opendous_usb_write, out_length = %d, result = %d", out_length, result);
774
775 #ifdef _DEBUG_USB_COMMS_
776 opendous_debug_buffer(usb_out_buffer, out_length);
777 #endif
778 return result;
779 }
780
781 /* Read data from USB into in_buffer. */
782 int opendous_usb_read(struct opendous_jtag *opendous_jtag)
783 {
784 #ifdef _DEBUG_USB_COMMS_
785 LOG_DEBUG("USB read begin");
786 #endif
787 int result;
788 if (opendous_probe->CONTROL_TRANSFER) {
789 result = jtag_libusb_control_transfer(opendous_jtag->usb_handle,
790 LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_IN,
791 FUNC_READ_DATA, 0, 0, (char *) usb_in_buffer, OPENDOUS_IN_BUFFER_SIZE, OPENDOUS_USB_TIMEOUT);
792 } else {
793 result = jtag_libusb_bulk_read(opendous_jtag->usb_handle, OPENDOUS_READ_ENDPOINT,
794 (char *)usb_in_buffer, OPENDOUS_IN_BUFFER_SIZE, OPENDOUS_USB_TIMEOUT);
795 }
796 #ifdef _DEBUG_USB_COMMS_
797 LOG_DEBUG("USB read end: %d bytes", result);
798 #endif
799 DEBUG_JTAG_IO("opendous_usb_read, result = %d", result);
800
801 #ifdef _DEBUG_USB_COMMS_
802 opendous_debug_buffer(usb_in_buffer, result);
803 #endif
804 return result;
805 }
806
807 #ifdef _DEBUG_USB_COMMS_
808 #define BYTES_PER_LINE 16
809
810 void opendous_debug_buffer(uint8_t *buffer, int length)
811 {
812 char line[81];
813 char s[4];
814 int i;
815 int j;
816
817 for (i = 0; i < length; i += BYTES_PER_LINE) {
818 snprintf(line, 5, "%04x", i);
819 for (j = i; j < i + BYTES_PER_LINE && j < length; j++) {
820 snprintf(s, 4, " %02x", buffer[j]);
821 strcat(line, s);
822 }
823 LOG_DEBUG("%s", line);
824 }
825 }
826 #endif
Open On-Chip Debugger