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Initialize return value.
[openocd.git] / src / jtag / drivers / vsllink.c
blobe39a4d627902baa0bc71af4bd60bcd698e5f788f
1 /***************************************************************************
2 * Copyright (C) 2009-2010 by Simon Qian <SimonQian@SimonQian.com> *
3 * *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
8 * *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 * *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
19
20 /* Versaloon is a programming tool for multiple MCUs.
21 * It's distributed under GPLv3.
22 * You can find it at http://www.Versaloon.com/.
23 */
24
25 #ifdef HAVE_CONFIG_H
26 #include "config.h"
27 #endif
28
29 #include <jtag/interface.h>
30 #include <jtag/commands.h>
31 #include "usb_common.h"
32
33 #include "versaloon/versaloon_include.h"
34 #include "versaloon/versaloon.h"
35
36 static int vsllink_tms_offset;
37
38 struct pending_scan_result {
39 int src_offset;
40 int dest_offset;
41 int length; /* Number of bits to read */
42 struct scan_command *command; /* Corresponding scan command */
43 uint8_t *ack;
44 uint8_t *buffer;
45 bool last; /* indicate the last scan pending */
46 };
47
48 #define MAX_PENDING_SCAN_RESULTS 256
49
50 static int pending_scan_results_length;
51 static struct pending_scan_result
52 pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
53
54 /* Queue command functions */
55 static void vsllink_end_state(tap_state_t state);
56 static void vsllink_state_move(void);
57 static void vsllink_path_move(int num_states, tap_state_t *path);
58 static void vsllink_tms(int num_bits, const uint8_t *bits);
59 static void vsllink_runtest(int num_cycles);
60 static void vsllink_stableclocks(int num_cycles, int tms);
61 static void vsllink_scan(bool ir_scan, enum scan_type type,
62 uint8_t *buffer, int scan_size, struct scan_command *command);
63 static void vsllink_reset(int trst, int srst);
64
65 /* VSLLink tap buffer functions */
66 static void vsllink_tap_append_step(int tms, int tdi);
67 static void vsllink_tap_init(void);
68 static int vsllink_tap_execute(void);
69 static void vsllink_tap_ensure_pending(int scans);
70 static void vsllink_tap_append_scan(int length, uint8_t *buffer,
71 struct scan_command *command);
72
73 /* VSLLink lowlevel functions */
74 struct vsllink {
75 struct usb_dev_handle *usb_handle;
76 };
77
78 static struct vsllink *vsllink_usb_open(void);
79 static void vsllink_usb_close(struct vsllink *vsllink);
80
81 #if defined _DEBUG_JTAG_IO_
82 static void vsllink_debug_buffer(uint8_t *buffer, int length);
83 #endif
84
85 static int tap_length;
86 static int tap_buffer_size;
87 static uint8_t *tms_buffer;
88 static uint8_t *tdi_buffer;
89 static uint8_t *tdo_buffer;
90
91 struct vsllink *vsllink_handle;
92
93 static int vsllink_execute_queue(void)
94 {
95 struct jtag_command *cmd = jtag_command_queue;
96 int scan_size;
97 enum scan_type type;
98 uint8_t *buffer;
99
100 DEBUG_JTAG_IO("-------------------------------------"
101 " vsllink "
102 "-------------------------------------");
103
104 while (cmd != NULL) {
105 switch (cmd->type) {
106 case JTAG_RUNTEST:
107 DEBUG_JTAG_IO("runtest %i cycles, end in %s",
108 cmd->cmd.runtest->num_cycles,
109 tap_state_name(cmd->cmd.runtest
110 ->end_state));
111
112 vsllink_end_state(cmd->cmd.runtest->end_state);
113 vsllink_runtest(cmd->cmd.runtest->num_cycles);
114 break;
115
116 case JTAG_TLR_RESET:
117 DEBUG_JTAG_IO("statemove end in %s",
118 tap_state_name(cmd->cmd.statemove
119 ->end_state));
120
121 vsllink_end_state(cmd->cmd.statemove
122 ->end_state);
123 vsllink_state_move();
124 break;
125
126 case JTAG_PATHMOVE:
127 DEBUG_JTAG_IO("pathmove: %i states, end in %s",
128 cmd->cmd.pathmove->num_states,
129 tap_state_name(cmd->cmd.pathmove
130 ->path[cmd->cmd.pathmove
131 ->num_states - 1]));
132
133 vsllink_path_move(
134 cmd->cmd.pathmove->num_states,
135 cmd->cmd.pathmove->path);
136 break;
137
138 case JTAG_SCAN:
139 DEBUG_JTAG_IO("JTAG Scan...");
140
141 vsllink_end_state(cmd->cmd.scan->end_state);
142
143 scan_size = jtag_build_buffer(
144 cmd->cmd.scan, &buffer);
145
146 if (cmd->cmd.scan->ir_scan)
147 DEBUG_JTAG_IO(
148 "JTAG Scan write IR(%d bits), "
149 "end in %s:",
150 scan_size,
151 tap_state_name(cmd->cmd.scan
152 ->end_state));
153
154 else
155 DEBUG_JTAG_IO(
156 "JTAG Scan write DR(%d bits), "
157 "end in %s:",
158 scan_size,
159 tap_state_name(cmd->cmd.scan
160 ->end_state));
161
162 #ifdef _DEBUG_JTAG_IO_
163 vsllink_debug_buffer(buffer,
164 DIV_ROUND_UP(scan_size, 8));
165 #endif
166
167 type = jtag_scan_type(cmd->cmd.scan);
168
169 vsllink_scan(cmd->cmd.scan->ir_scan,
170 type, buffer, scan_size,
171 cmd->cmd.scan);
172 break;
173
174 case JTAG_RESET:
175 DEBUG_JTAG_IO("reset trst: %i srst %i",
176 cmd->cmd.reset->trst,
177 cmd->cmd.reset->srst);
178
179 vsllink_tap_execute();
180
181 if (cmd->cmd.reset->trst == 1)
182 tap_set_state(TAP_RESET);
183
184 vsllink_reset(cmd->cmd.reset->trst,
185 cmd->cmd.reset->srst);
186 break;
187
188 case JTAG_SLEEP:
189 DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
190 vsllink_tap_execute();
191 jtag_sleep(cmd->cmd.sleep->us);
192 break;
193
194 case JTAG_STABLECLOCKS:
195 DEBUG_JTAG_IO("add %d clocks",
196 cmd->cmd.stableclocks->num_cycles);
197
198 switch (tap_get_state()) {
199 case TAP_RESET:
200 /* tms must be '1' to stay
201 * n TAP_RESET mode
202 */
203 scan_size = 1;
204 break;
205 case TAP_DRSHIFT:
206 case TAP_IDLE:
207 case TAP_DRPAUSE:
208 case TAP_IRSHIFT:
209 case TAP_IRPAUSE:
210 /* else, tms should be '0' */
211 scan_size = 0;
212 break;
213 /* above stable states are OK */
214 default:
215 LOG_ERROR("jtag_add_clocks() "
216 "in non-stable state \"%s\"",
217 tap_state_name(tap_get_state())
218 );
219 exit(-1);
220 }
221 vsllink_stableclocks(cmd->cmd.stableclocks
222 ->num_cycles, scan_size);
223 break;
224
225 case JTAG_TMS:
226 DEBUG_JTAG_IO("add %d jtag tms",
227 cmd->cmd.tms->num_bits);
228
229 vsllink_tms(cmd->cmd.tms->num_bits, cmd->cmd.tms->bits);
230 break;
231
232 default:
233 LOG_ERROR("BUG: unknown JTAG command type "
234 "encountered: %d", cmd->type);
235 exit(-1);
236 }
237 cmd = cmd->next;
238 }
239
240 return vsllink_tap_execute();
241 }
242
243 static int vsllink_speed(int speed)
244 {
245 versaloon_interface.adaptors.jtag_raw.config(0, (uint16_t)speed);
246 return versaloon_interface.adaptors.peripheral_commit();
247 }
248
249 static int vsllink_khz(int khz, int *jtag_speed)
250 {
251 *jtag_speed = khz;
252
253 return ERROR_OK;
254 }
255
256 static int vsllink_speed_div(int jtag_speed, int *khz)
257 {
258 *khz = jtag_speed;
259
260 return ERROR_OK;
261 }
262
263 static void vsllink_free_buffer(void)
264 {
265 if (tdi_buffer != NULL)
266 {
267 free(tdi_buffer);
268 tdi_buffer = NULL;
269 }
270 if (tdo_buffer != NULL)
271 {
272 free(tdo_buffer);
273 tdo_buffer = NULL;
274 }
275 if (tms_buffer != NULL)
276 {
277 free(tms_buffer);
278 tms_buffer = NULL;
279 }
280 }
281
282 static int vsllink_quit(void)
283 {
284 versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
285 0, 0, GPIO_SRST | GPIO_TRST);
286 versaloon_interface.adaptors.gpio.fini(0);
287 versaloon_interface.adaptors.jtag_raw.fini(0);
288 versaloon_interface.adaptors.peripheral_commit();
289 versaloon_interface.fini();
290
291 vsllink_free_buffer();
292 vsllink_usb_close(vsllink_handle);
293
294 return ERROR_OK;
295 }
296
297 static int vsllink_init(void)
298 {
299 vsllink_handle = vsllink_usb_open();
300 if (vsllink_handle == 0) {
301 LOG_ERROR("Can't find USB JTAG Interface!"\
302 "Please check connection and permissions.");
303 return ERROR_JTAG_INIT_FAILED;
304 }
305 LOG_DEBUG("vsllink found on %04X:%04X",
306 versaloon_interface.usb_setting.vid,
307 versaloon_interface.usb_setting.pid);
308 versaloon_usb_device_handle = vsllink_handle->usb_handle;
309
310 if (ERROR_OK != versaloon_interface.init())
311 {
312 return ERROR_FAIL;
313 }
314 if (versaloon_interface.usb_setting.buf_size < 32)
315 {
316 versaloon_interface.fini();
317 return ERROR_FAIL;
318 }
319
320 // malloc buffer size for tap
321 tap_buffer_size = versaloon_interface.usb_setting.buf_size - 32;
322 vsllink_free_buffer();
323 tdi_buffer = (uint8_t *)malloc(tap_buffer_size);
324 tdo_buffer = (uint8_t *)malloc(tap_buffer_size);
325 tms_buffer = (uint8_t *)malloc(tap_buffer_size);
326 if ((NULL == tdi_buffer) || (NULL == tdo_buffer) || (NULL == tms_buffer))
327 {
328 vsllink_quit();
329 return ERROR_FAIL;
330 }
331
332 versaloon_interface.adaptors.jtag_raw.init(0);
333 versaloon_interface.adaptors.jtag_raw.config(0, jtag_get_speed_khz());
334 versaloon_interface.adaptors.gpio.init(0);
335 versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
336 GPIO_TRST, GPIO_SRST, GPIO_SRST);
337 if (ERROR_OK != versaloon_interface.adaptors.peripheral_commit())
338 {
339 return ERROR_FAIL;
340 }
341
342 vsllink_reset(0, 0);
343 vsllink_tap_init();
344 return ERROR_OK;
345 }
346
347 /***************************************************************************/
348 /* Queue command implementations */
349
350 static void vsllink_end_state(tap_state_t state)
351 {
352 if (tap_is_state_stable(state))
353 tap_set_end_state(state);
354 else {
355 LOG_ERROR("BUG: %i is not a valid end state", state);
356 exit(-1);
357 }
358 }
359
360 /* Goes to the end state. */
361 static void vsllink_state_move(void)
362 {
363 int i;
364 uint8_t tms_scan = tap_get_tms_path(tap_get_state(),
365 tap_get_end_state());
366 uint8_t tms_scan_bits = tap_get_tms_path_len(tap_get_state(),
367 tap_get_end_state());
368
369 for (i = 0; i < tms_scan_bits; i++)
370 vsllink_tap_append_step((tms_scan >> i) & 1, 0);
371
372 tap_set_state(tap_get_end_state());
373 }
374
375 static void vsllink_path_move(int num_states, tap_state_t *path)
376 {
377 for (int i = 0; i < num_states; i++) {
378 if (path[i] == tap_state_transition(tap_get_state(), false))
379 vsllink_tap_append_step(0, 0);
380 else if (path[i] == tap_state_transition(tap_get_state(), true))
381 vsllink_tap_append_step(1, 0);
382 else {
383 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
384 tap_state_name(tap_get_state()),
385 tap_state_name(path[i]));
386 exit(-1);
387 }
388
389 tap_set_state(path[i]);
390 }
391
392 tap_set_end_state(tap_get_state());
393 }
394
395 static void vsllink_tms(int num_bits, const uint8_t *bits)
396 {
397 for (int i = 0; i < num_bits; i++) {
398 vsllink_tap_append_step((bits[i / 8] >> (i % 8)) & 1, 0);
399 }
400 }
401
402 static void vsllink_stableclocks(int num_cycles, int tms)
403 {
404 while (num_cycles > 0) {
405 vsllink_tap_append_step(tms, 0);
406 num_cycles--;
407 }
408 }
409
410 static void vsllink_runtest(int num_cycles)
411 {
412 tap_state_t saved_end_state = tap_get_end_state();
413
414 if (tap_get_state() != TAP_IDLE) {
415 /* enter IDLE state */
416 vsllink_end_state(TAP_IDLE);
417 vsllink_state_move();
418 }
419
420 vsllink_stableclocks(num_cycles, 0);
421
422 // post-process
423 // set end_state
424 vsllink_end_state(saved_end_state);
425 if (tap_get_end_state() != tap_get_end_state())
426 vsllink_state_move();
427 }
428
429 static void vsllink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer,
430 int scan_size, struct scan_command *command)
431 {
432 tap_state_t saved_end_state;
433
434 saved_end_state = tap_get_end_state();
435
436 /* Move to appropriate scan state */
437 vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
438
439 if (tap_get_state() != tap_get_end_state())
440 vsllink_state_move();
441 vsllink_end_state(saved_end_state);
442
443 /* Scan */
444 vsllink_tap_append_scan(scan_size, buffer, command);
445
446 /* Goto Pause and record position to insert tms:0 */
447 vsllink_tap_append_step(0, 0);
448 vsllink_tms_offset = tap_length;
449
450 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
451
452 if (tap_get_state() != tap_get_end_state())
453 vsllink_state_move();
454 }
455
456 static void vsllink_reset(int trst, int srst)
457 {
458 LOG_DEBUG("trst: %i, srst: %i", trst, srst);
459
460 if (!srst)
461 versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, 0, GPIO_SRST, GPIO_SRST);
462 else
463 versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, GPIO_SRST, 0, 0);
464
465 if (!trst)
466 versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, GPIO_TRST);
467 else
468 versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, 0);
469 versaloon_interface.adaptors.peripheral_commit();
470 }
471
472 COMMAND_HANDLER(vsllink_handle_usb_vid_command)
473 {
474 if (CMD_ARGC != 1) {
475 LOG_ERROR("parameter error, "
476 "should be one parameter for VID");
477 return ERROR_OK;
478 }
479
480 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0],
481 versaloon_interface.usb_setting.vid);
482 return ERROR_OK;
483 }
484
485 COMMAND_HANDLER(vsllink_handle_usb_pid_command)
486 {
487 if (CMD_ARGC != 1) {
488 LOG_ERROR("parameter error, "
489 "should be one parameter for PID");
490 return ERROR_OK;
491 }
492 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0],
493 versaloon_interface.usb_setting.pid);
494 return ERROR_OK;
495 }
496
497 COMMAND_HANDLER(vsllink_handle_usb_bulkin_command)
498 {
499 if (CMD_ARGC != 1) {
500 LOG_ERROR("parameter error, "
501 "should be one parameter for BULKIN endpoint");
502 return ERROR_OK;
503 }
504
505 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0],
506 versaloon_interface.usb_setting.ep_in);
507
508 versaloon_interface.usb_setting.ep_in |= 0x80;
509
510 return ERROR_OK;
511 }
512
513 COMMAND_HANDLER(vsllink_handle_usb_bulkout_command)
514 {
515 if (CMD_ARGC != 1) {
516 LOG_ERROR("parameter error, "
517 "should be one parameter for BULKOUT endpoint");
518 return ERROR_OK;
519 }
520
521 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0],
522 versaloon_interface.usb_setting.ep_out);
523
524 versaloon_interface.usb_setting.ep_out &= ~0x80;
525
526 return ERROR_OK;
527 }
528
529 COMMAND_HANDLER(vsllink_handle_usb_interface_command)
530 {
531 if (CMD_ARGC != 1) {
532 LOG_ERROR("parameter error, "
533 "should be one parameter for interface number");
534 return ERROR_OK;
535 }
536
537 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0],
538 versaloon_interface.usb_setting.interface);
539 return ERROR_OK;
540 }
541
542 /***************************************************************************/
543 /* VSLLink tap functions */
544
545 static void vsllink_tap_init(void)
546 {
547 tap_length = 0;
548 pending_scan_results_length = 0;
549 vsllink_tms_offset = 0;
550 }
551
552 static void vsllink_tap_ensure_pending(int scans)
553 {
554 int available_scans =
555 MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
556
557 if (scans > available_scans)
558 vsllink_tap_execute();
559 }
560
561 static void vsllink_tap_append_step(int tms, int tdi)
562 {
563 int index_var = tap_length / 8;
564
565 int bit_index = tap_length % 8;
566 uint8_t bit = 1 << bit_index;
567
568 if (tms)
569 tms_buffer[index_var] |= bit;
570 else
571 tms_buffer[index_var] &= ~bit;
572
573 if (tdi)
574 tdi_buffer[index_var] |= bit;
575 else
576 tdi_buffer[index_var] &= ~bit;
577
578 tap_length++;
579
580 if (tap_buffer_size * 8 <= tap_length)
581 vsllink_tap_execute();
582 }
583
584 static void vsllink_tap_append_scan(int length, uint8_t *buffer,
585 struct scan_command *command)
586 {
587 struct pending_scan_result *pending_scan_result;
588 int len_tmp, len_all, i;
589
590 len_all = 0;
591 while (len_all < length) {
592 vsllink_tap_ensure_pending(1);
593 pending_scan_result =
594 &pending_scan_results_buffer[
595 pending_scan_results_length];
596
597 if ((length - len_all) > (tap_buffer_size * 8 - tap_length)) {
598 /* Use all memory available
599 vsllink_tap_append_step will commit automatically */
600 len_tmp = tap_buffer_size * 8 - tap_length;
601 pending_scan_result->last = false;
602 } else {
603 len_tmp = length - len_all;
604 pending_scan_result->last = true;
605 }
606 pending_scan_result->src_offset = tap_length;
607 pending_scan_result->dest_offset = len_all;
608 pending_scan_result->length = len_tmp;
609 pending_scan_result->command = command;
610 pending_scan_result->buffer = buffer;
611 pending_scan_results_length++;
612
613 for (i = 0; i < len_tmp; i++) {
614 vsllink_tap_append_step(((len_all + i) < length-1
615 ? 0 : 1),
616 (buffer[(len_all + i)/8]
617 >> ((len_all + i)%8)) & 1);
618 }
619
620 len_all += len_tmp;
621 }
622 }
623
624 static int vsllink_jtag_execute(void)
625 {
626 int i;
627 int result;
628
629 if (tap_length <= 0)
630 return ERROR_OK;
631
632 versaloon_interface.adaptors.jtag_raw.execute(0, tdi_buffer, tms_buffer,
633 tdo_buffer, tap_length);
634
635 result = versaloon_interface.adaptors.peripheral_commit();
636
637 if (result == ERROR_OK) {
638 for (i = 0; i < pending_scan_results_length; i++) {
639 struct pending_scan_result *pending_scan_result =
640 &pending_scan_results_buffer[i];
641 uint8_t *buffer = pending_scan_result->buffer;
642 int length = pending_scan_result->length;
643 int src_first = pending_scan_result->src_offset;
644 int dest_first = pending_scan_result->dest_offset;
645 bool last = pending_scan_result->last;
646
647 struct scan_command *command;
648
649 command = pending_scan_result->command;
650 buf_set_buf(tdo_buffer, src_first, buffer, dest_first, length);
651
652 #ifdef _DEBUG_JTAG_IO_
653 DEBUG_JTAG_IO(
654 "JTAG scan read(%d bits, from src %d bits to dest %d bits):",
655 length, src_first, dest_first);
656 vsllink_debug_buffer(buffer + dest_first / 8,
657 DIV_ROUND_UP(length, 7));
658 #endif
659
660 if (last) {
661 if (jtag_read_buffer(buffer, command)
662 != ERROR_OK) {
663 vsllink_tap_init();
664 return ERROR_JTAG_QUEUE_FAILED;
665 }
666
667 if (pending_scan_result->buffer != NULL)
668 free(pending_scan_result->buffer);
669 }
670 }
671 } else {
672 LOG_ERROR("vsllink_jtag_execute failure");
673 return ERROR_JTAG_QUEUE_FAILED;
674 }
675
676 vsllink_tap_init();
677
678 return ERROR_OK;
679 }
680
681 static int vsllink_tap_execute(void)
682 {
683 return vsllink_jtag_execute();
684 }
685
686 /*****************************************************************************/
687 /* VSLLink USB low-level functions */
688
689 static uint8_t usb_check_string(usb_dev_handle *usb, uint8_t stringidx,
690 char * string, char * buff, uint16_t buf_size)
691 {
692 int len;
693 uint8_t alloced = 0;
694 uint8_t ret = 1;
695
696 if (NULL == buff)
697 {
698 buf_size = 256;
699 buff = (char*)malloc(buf_size);
700 if (NULL == buff)
701 {
702 ret = 0;
703 goto free_and_return;
704 }
705 alloced = 1;
706 }
707
708 strcpy(buff, "");
709 len = usb_get_string_simple(usb, stringidx, (char *)buff, buf_size);
710 if ((len < 0) || (len != ((int)strlen((const char *)buff))))
711 {
712 ret = 0;
713 goto free_and_return;
714 }
715
716 buff[len] = '\0';
717 if ((string != NULL) && strcmp((const char *)buff, string))
718 {
719 ret = 0;
720 goto free_and_return;
721 }
722
723 free_and_return:
724 if (alloced && (buff != NULL))
725 {
726 free(buff);
727 buff = NULL;
728 }
729 return ret;
730 }
731
732 static usb_dev_handle* find_usb_device(uint16_t VID, uint16_t PID,
733 uint8_t interface, int8_t serialindex, char *serialstring,
734 int8_t productindex, char *productstring)
735 {
736 usb_dev_handle *dev_handle = NULL;
737 struct usb_bus *busses;
738 struct usb_bus *bus;
739 struct usb_device *dev;
740
741 usb_init();
742 usb_find_busses();
743 usb_find_devices();
744 busses = usb_get_busses();
745
746 for (bus = busses; bus; bus = bus->next)
747 {
748 for (dev = bus->devices; dev; dev = dev->next)
749 {
750 if ((dev->descriptor.idVendor == VID)
751 && (dev->descriptor.idProduct == PID))
752 {
753 dev_handle = usb_open(dev);
754 if (NULL == dev_handle)
755 {
756 LOG_ERROR("failed to open %04X:%04X, %s", VID, PID,
757 usb_strerror());
758 continue;
759 }
760
761 // check description string
762 if (((productstring != NULL) && (productindex >= 0)
763 && !usb_check_string(dev_handle, productindex,
764 productstring, NULL, 0))
765 || ((serialstring != NULL) && (serialindex >= 0)
766 && !usb_check_string(dev_handle, serialindex,
767 serialstring, NULL, 0)))
768 {
769 usb_close(dev_handle);
770 dev_handle = NULL;
771 continue;
772 }
773
774 if (usb_claim_interface(dev_handle, interface) != 0)
775 {
776 LOG_ERROR(ERRMSG_FAILURE_OPERATION_MESSAGE,
777 "claim interface", usb_strerror());
778 usb_close(dev_handle);
779 dev_handle = NULL;
780 continue;
781 }
782
783 if (dev_handle != NULL)
784 {
785 return dev_handle;
786 }
787 }
788 }
789 }
790
791 return dev_handle;
792 }
793
794 static struct vsllink *vsllink_usb_open(void)
795 {
796 usb_init();
797
798 struct usb_dev_handle *dev;
799
800 dev = find_usb_device(versaloon_interface.usb_setting.vid,
801 versaloon_interface.usb_setting.pid,
802 versaloon_interface.usb_setting.interface,
803 0, NULL, 2, "Versaloon");
804 if (NULL == dev)
805 return NULL;
806
807 struct vsllink *result = malloc(sizeof(struct vsllink));
808 result->usb_handle = dev;
809 return result;
810 }
811
812 static void vsllink_usb_close(struct vsllink *vsllink)
813 {
814 int ret;
815
816 ret = usb_release_interface(vsllink->usb_handle,
817 versaloon_interface.usb_setting.interface);
818 if (ret != 0) {
819 LOG_ERROR("fail to release interface %d, %d returned",
820 versaloon_interface.usb_setting.interface, ret);
821 exit(-1);
822 }
823
824 ret = usb_close(vsllink->usb_handle);
825 if (ret != 0) {
826 LOG_ERROR("fail to close usb, %d returned", ret);
827 exit(-1);
828 }
829
830 free(vsllink);
831 }
832
833 #define BYTES_PER_LINE 16
834
835 #if defined _DEBUG_JTAG_IO_
836 static void vsllink_debug_buffer(uint8_t *buffer, int length)
837 {
838 char line[81];
839 char s[4];
840 int i;
841 int j;
842
843 for (i = 0; i < length; i += BYTES_PER_LINE) {
844 snprintf(line, 5, "%04x", i);
845 for (j = i; j < i + BYTES_PER_LINE && j < length; j++) {
846 snprintf(s, 4, " %02x", buffer[j]);
847 strcat(line, s);
848 }
849 LOG_DEBUG("%s", line);
850 }
851 }
852 #endif /* _DEBUG_JTAG_IO_ */
853
854 static const struct command_registration vsllink_command_handlers[] = {
855 {
856 .name = "vsllink_usb_vid",
857 .handler = &vsllink_handle_usb_vid_command,
858 .mode = COMMAND_CONFIG,
859 },
860 {
861 .name = "vsllink_usb_pid",
862 .handler = &vsllink_handle_usb_pid_command,
863 .mode = COMMAND_CONFIG,
864 },
865 {
866 .name = "vsllink_usb_bulkin",
867 .handler = &vsllink_handle_usb_bulkin_command,
868 .mode = COMMAND_CONFIG,
869 },
870 {
871 .name = "vsllink_usb_bulkout",
872 .handler = &vsllink_handle_usb_bulkout_command,
873 .mode = COMMAND_CONFIG,
874 },
875 {
876 .name = "vsllink_usb_interface",
877 .handler = &vsllink_handle_usb_interface_command,
878 .mode = COMMAND_CONFIG,
879 },
880 COMMAND_REGISTRATION_DONE
881 };
882
883 static const char *vsllink_transports[] = {"jtag", "swd", NULL};
884
885 struct jtag_interface vsllink_interface = {
886 .name = "vsllink",
887 .supported = DEBUG_CAP_TMS_SEQ,
888 .commands = vsllink_command_handlers,
889 .transports = vsllink_transports,
890
891 .init = vsllink_init,
892 .quit = vsllink_quit,
893 .khz = vsllink_khz,
894 .speed = vsllink_speed,
895 .speed_div = vsllink_speed_div,
896 .execute_queue = vsllink_execute_queue,
897 };
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