ce7ff413277282bda881dccf5b2fac7f7fae05ca
[openocd.git] / src / jtag / drivers / stlink_usb.c
1 /***************************************************************************
2 * Copyright (C) 2011-2012 by Mathias Kuester *
3 * Mathias Kuester <kesmtp@freenet.de> *
4 * *
5 * Copyright (C) 2012 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
7 * *
8 * This code is based on https://github.com/texane/stlink *
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 * This program is distributed in the hope that it will be useful, *
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
18 * GNU General Public License for more details. *
19 * *
20 * You should have received a copy of the GNU General Public License *
21 * along with this program; if not, write to the *
22 * Free Software Foundation, Inc., *
23 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
24 ***************************************************************************/
25
26 #ifdef HAVE_CONFIG_H
27 #include "config.h"
28 #endif
29
30 /* project specific includes */
31 #include <helper/binarybuffer.h>
32 #include <jtag/interface.h>
33 #include <jtag/hla/hla_layout.h>
34 #include <jtag/hla/hla_transport.h>
35 #include <jtag/hla/hla_interface.h>
36 #include <target/target.h>
37
38 #include <target/cortex_m.h>
39
40 #include "libusb_common.h"
41
42 #define ENDPOINT_IN 0x80
43 #define ENDPOINT_OUT 0x00
44
45 #define STLINK_NULL_EP 0
46 #define STLINK_RX_EP (1|ENDPOINT_IN)
47 #define STLINK_TX_EP (2|ENDPOINT_OUT)
48 #define STLINK_SG_SIZE (31)
49 #define STLINK_DATA_SIZE (4*128)
50 #define STLINK_CMD_SIZE_V2 (16)
51 #define STLINK_CMD_SIZE_V1 (10)
52
53 enum stlink_jtag_api_version {
54 STLINK_JTAG_API_V1 = 1,
55 STLINK_JTAG_API_V2,
56 };
57
58 /** */
59 struct stlink_usb_version {
60 /** */
61 int stlink;
62 /** */
63 int jtag;
64 /** */
65 int swim;
66 /** highest supported jtag api version */
67 enum stlink_jtag_api_version jtag_api_max;
68 };
69
70 /** */
71 struct stlink_usb_handle_s {
72 /** */
73 struct jtag_libusb_device_handle *fd;
74 /** */
75 struct libusb_transfer *trans;
76 /** */
77 uint8_t cmdbuf[STLINK_SG_SIZE];
78 /** */
79 uint8_t cmdidx;
80 /** */
81 uint8_t direction;
82 /** */
83 uint8_t databuf[STLINK_DATA_SIZE];
84 /** */
85 enum hl_transports transport;
86 /** */
87 struct stlink_usb_version version;
88 /** */
89 uint16_t vid;
90 /** */
91 uint16_t pid;
92 /** this is the currently used jtag api */
93 enum stlink_jtag_api_version jtag_api;
94 };
95
96 #define STLINK_DEBUG_ERR_OK 0x80
97 #define STLINK_DEBUG_ERR_FAULT 0x81
98 #define STLINK_SWD_AP_WAIT 0x10
99 #define STLINK_SWD_DP_WAIT 0x14
100
101 #define STLINK_CORE_RUNNING 0x80
102 #define STLINK_CORE_HALTED 0x81
103 #define STLINK_CORE_STAT_UNKNOWN -1
104
105 #define STLINK_GET_VERSION 0xF1
106 #define STLINK_DEBUG_COMMAND 0xF2
107 #define STLINK_DFU_COMMAND 0xF3
108 #define STLINK_SWIM_COMMAND 0xF4
109 #define STLINK_GET_CURRENT_MODE 0xF5
110 #define STLINK_GET_TARGET_VOLTAGE 0xF7
111
112 #define STLINK_DEV_DFU_MODE 0x00
113 #define STLINK_DEV_MASS_MODE 0x01
114 #define STLINK_DEV_DEBUG_MODE 0x02
115 #define STLINK_DEV_SWIM_MODE 0x03
116 #define STLINK_DEV_BOOTLOADER_MODE 0x04
117 #define STLINK_DEV_UNKNOWN_MODE -1
118
119 #define STLINK_DFU_EXIT 0x07
120
121 #define STLINK_SWIM_ENTER 0x00
122 #define STLINK_SWIM_EXIT 0x01
123
124 #define STLINK_DEBUG_ENTER_JTAG 0x00
125 #define STLINK_DEBUG_GETSTATUS 0x01
126 #define STLINK_DEBUG_FORCEDEBUG 0x02
127 #define STLINK_DEBUG_APIV1_RESETSYS 0x03
128 #define STLINK_DEBUG_APIV1_READALLREGS 0x04
129 #define STLINK_DEBUG_APIV1_READREG 0x05
130 #define STLINK_DEBUG_APIV1_WRITEREG 0x06
131 #define STLINK_DEBUG_READMEM_32BIT 0x07
132 #define STLINK_DEBUG_WRITEMEM_32BIT 0x08
133 #define STLINK_DEBUG_RUNCORE 0x09
134 #define STLINK_DEBUG_STEPCORE 0x0a
135 #define STLINK_DEBUG_APIV1_SETFP 0x0b
136 #define STLINK_DEBUG_READMEM_8BIT 0x0c
137 #define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
138 #define STLINK_DEBUG_APIV1_CLEARFP 0x0e
139 #define STLINK_DEBUG_APIV1_WRITEDEBUGREG 0x0f
140 #define STLINK_DEBUG_APIV1_SETWATCHPOINT 0x10
141
142 #define STLINK_DEBUG_ENTER_JTAG 0x00
143 #define STLINK_DEBUG_ENTER_SWD 0xa3
144
145 #define STLINK_DEBUG_APIV1_ENTER 0x20
146 #define STLINK_DEBUG_EXIT 0x21
147 #define STLINK_DEBUG_READCOREID 0x22
148
149 #define STLINK_DEBUG_APIV2_ENTER 0x30
150 #define STLINK_DEBUG_APIV2_READ_IDCODES 0x31
151 #define STLINK_DEBUG_APIV2_RESETSYS 0x32
152 #define STLINK_DEBUG_APIV2_READREG 0x33
153 #define STLINK_DEBUG_APIV2_WRITEREG 0x34
154 #define STLINK_DEBUG_APIV2_WRITEDEBUGREG 0x35
155 #define STLINK_DEBUG_APIV2_READDEBUGREG 0x36
156
157 #define STLINK_DEBUG_APIV2_READALLREGS 0x3A
158 #define STLINK_DEBUG_APIV2_GETLASTRWSTATUS 0x3B
159 #define STLINK_DEBUG_APIV2_DRIVE_NRST 0x3C
160
161 #define STLINK_DEBUG_APIV2_DRIVE_NRST_LOW 0x00
162 #define STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH 0x01
163 #define STLINK_DEBUG_APIV2_DRIVE_NRST_PULSE 0x02
164
165 /** */
166 enum stlink_mode {
167 STLINK_MODE_UNKNOWN = 0,
168 STLINK_MODE_DFU,
169 STLINK_MODE_MASS,
170 STLINK_MODE_DEBUG_JTAG,
171 STLINK_MODE_DEBUG_SWD,
172 STLINK_MODE_DEBUG_SWIM
173 };
174
175 #define REQUEST_SENSE 0x03
176 #define REQUEST_SENSE_LENGTH 18
177
178 static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size);
179
180 /** */
181 static int stlink_usb_xfer_v1_get_status(void *handle)
182 {
183 struct stlink_usb_handle_s *h;
184
185 assert(handle != NULL);
186
187 h = (struct stlink_usb_handle_s *)handle;
188
189 /* read status */
190 memset(h->cmdbuf, 0, STLINK_SG_SIZE);
191
192 if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)h->cmdbuf,
193 13, 1000) != 13)
194 return ERROR_FAIL;
195
196 uint32_t t1;
197
198 t1 = buf_get_u32(h->cmdbuf, 0, 32);
199
200 /* check for USBS */
201 if (t1 != 0x53425355)
202 return ERROR_FAIL;
203 /*
204 * CSW status:
205 * 0 success
206 * 1 command failure
207 * 2 phase error
208 */
209 if (h->cmdbuf[12] != 0)
210 return ERROR_FAIL;
211
212 return ERROR_OK;
213 }
214
215 /** */
216 static int stlink_usb_xfer_rw(void *handle, int cmdsize, const uint8_t *buf, int size)
217 {
218 struct stlink_usb_handle_s *h;
219
220 assert(handle != NULL);
221
222 h = (struct stlink_usb_handle_s *)handle;
223
224 if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)h->cmdbuf, cmdsize,
225 1000) != cmdsize) {
226 return ERROR_FAIL;
227 }
228
229 if (h->direction == STLINK_TX_EP && size) {
230 if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)buf,
231 size, 1000) != size) {
232 LOG_DEBUG("bulk write failed");
233 return ERROR_FAIL;
234 }
235 } else if (h->direction == STLINK_RX_EP && size) {
236 if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)buf,
237 size, 1000) != size) {
238 LOG_DEBUG("bulk read failed");
239 return ERROR_FAIL;
240 }
241 }
242
243 return ERROR_OK;
244 }
245
246 /** */
247 static int stlink_usb_xfer_v1_get_sense(void *handle)
248 {
249 int res;
250 struct stlink_usb_handle_s *h;
251
252 assert(handle != NULL);
253
254 h = (struct stlink_usb_handle_s *)handle;
255
256 stlink_usb_init_buffer(handle, STLINK_RX_EP, 16);
257
258 h->cmdbuf[h->cmdidx++] = REQUEST_SENSE;
259 h->cmdbuf[h->cmdidx++] = 0;
260 h->cmdbuf[h->cmdidx++] = 0;
261 h->cmdbuf[h->cmdidx++] = 0;
262 h->cmdbuf[h->cmdidx++] = REQUEST_SENSE_LENGTH;
263
264 res = stlink_usb_xfer_rw(handle, REQUEST_SENSE_LENGTH, h->databuf, 16);
265
266 if (res != ERROR_OK)
267 return res;
268
269 if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK)
270 return ERROR_FAIL;
271
272 return ERROR_OK;
273 }
274
275 /** */
276 static int stlink_usb_xfer(void *handle, const uint8_t *buf, int size)
277 {
278 int err, cmdsize = STLINK_CMD_SIZE_V2;
279 struct stlink_usb_handle_s *h;
280
281 assert(handle != NULL);
282
283 h = (struct stlink_usb_handle_s *)handle;
284
285 if (h->version.stlink == 1)
286 cmdsize = STLINK_SG_SIZE;
287
288 err = stlink_usb_xfer_rw(handle, cmdsize, buf, size);
289
290 if (err != ERROR_OK)
291 return err;
292
293 if (h->version.stlink == 1) {
294 if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK) {
295 /* check csw status */
296 if (h->cmdbuf[12] == 1) {
297 LOG_DEBUG("get sense");
298 if (stlink_usb_xfer_v1_get_sense(handle) != ERROR_OK)
299 return ERROR_FAIL;
300 }
301 return ERROR_FAIL;
302 }
303 }
304
305 return ERROR_OK;
306 }
307
308 /** */
309 static void stlink_usb_xfer_v1_create_cmd(void *handle, uint8_t direction, uint32_t size)
310 {
311 struct stlink_usb_handle_s *h;
312
313 h = (struct stlink_usb_handle_s *)handle;
314
315 /* fill the send buffer */
316 strcpy((char *)h->cmdbuf, "USBC");
317 h->cmdidx += 4;
318 /* csw tag not used */
319 h->cmdidx += 4;
320 buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, size);
321 h->cmdidx += 4;
322 h->cmdbuf[h->cmdidx++] = (direction == STLINK_RX_EP ? ENDPOINT_IN : ENDPOINT_OUT);
323 h->cmdbuf[h->cmdidx++] = 0; /* lun */
324 h->cmdbuf[h->cmdidx++] = STLINK_CMD_SIZE_V1;
325 }
326
327 /** */
328 static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size)
329 {
330 struct stlink_usb_handle_s *h;
331
332 h = (struct stlink_usb_handle_s *)handle;
333
334 h->direction = direction;
335
336 h->cmdidx = 0;
337
338 memset(h->cmdbuf, 0, STLINK_SG_SIZE);
339 memset(h->databuf, 0, STLINK_DATA_SIZE);
340
341 if (h->version.stlink == 1)
342 stlink_usb_xfer_v1_create_cmd(handle, direction, size);
343 }
344
345 static const char * const stlink_usb_error_msg[] = {
346 "unknown"
347 };
348
349 /** */
350 static int stlink_usb_error_check(void *handle)
351 {
352 int res;
353 const char *err_msg = 0;
354 struct stlink_usb_handle_s *h;
355
356 assert(handle != NULL);
357
358 h = (struct stlink_usb_handle_s *)handle;
359
360 /* TODO: no error checking yet on api V1 */
361 if (h->jtag_api == STLINK_JTAG_API_V1)
362 h->databuf[0] = STLINK_DEBUG_ERR_OK;
363
364 switch (h->databuf[0]) {
365 case STLINK_DEBUG_ERR_OK:
366 res = ERROR_OK;
367 break;
368 case STLINK_DEBUG_ERR_FAULT:
369 default:
370 err_msg = stlink_usb_error_msg[0];
371 res = ERROR_FAIL;
372 break;
373 }
374
375 if (res != ERROR_OK)
376 LOG_DEBUG("status error: %d ('%s')", h->databuf[0], err_msg);
377
378 return res;
379 }
380
381 /** */
382 static int stlink_usb_version(void *handle)
383 {
384 int res;
385 uint16_t v;
386 struct stlink_usb_handle_s *h;
387
388 assert(handle != NULL);
389
390 h = (struct stlink_usb_handle_s *)handle;
391
392 stlink_usb_init_buffer(handle, STLINK_RX_EP, 6);
393
394 h->cmdbuf[h->cmdidx++] = STLINK_GET_VERSION;
395
396 res = stlink_usb_xfer(handle, h->databuf, 6);
397
398 if (res != ERROR_OK)
399 return res;
400
401 v = (h->databuf[0] << 8) | h->databuf[1];
402
403 h->version.stlink = (v >> 12) & 0x0f;
404 h->version.jtag = (v >> 6) & 0x3f;
405 h->version.swim = v & 0x3f;
406 h->vid = buf_get_u32(h->databuf, 16, 16);
407 h->pid = buf_get_u32(h->databuf, 32, 16);
408
409 /* set the supported jtag api version
410 * API V2 is supported since JTAG V11
411 */
412 if (h->version.jtag >= 11)
413 h->version.jtag_api_max = STLINK_JTAG_API_V2;
414 else
415 h->version.jtag_api_max = STLINK_JTAG_API_V1;
416
417 LOG_INFO("STLINK v%d JTAG v%d API v%d SWIM v%d VID 0x%04X PID 0x%04X",
418 h->version.stlink,
419 h->version.jtag,
420 (h->version.jtag_api_max == STLINK_JTAG_API_V1) ? 1 : 2,
421 h->version.swim,
422 h->vid,
423 h->pid);
424
425 return ERROR_OK;
426 }
427
428 static int stlink_usb_check_voltage(void *handle, float *target_voltage)
429 {
430 struct stlink_usb_handle_s *h;
431 uint32_t adc_results[2];
432
433 h = (struct stlink_usb_handle_s *)handle;
434
435 /* only supported by stlink/v2 and for firmware >= 13 */
436 if (h->version.stlink == 1 || h->version.jtag < 13)
437 return ERROR_COMMAND_NOTFOUND;
438
439 stlink_usb_init_buffer(handle, STLINK_RX_EP, 8);
440
441 h->cmdbuf[h->cmdidx++] = STLINK_GET_TARGET_VOLTAGE;
442
443 int result = stlink_usb_xfer(handle, h->databuf, 8);
444
445 if (result != ERROR_OK)
446 return result;
447
448 /* convert result */
449 adc_results[0] = le_to_h_u32(h->databuf);
450 adc_results[1] = le_to_h_u32(h->databuf + 4);
451
452 *target_voltage = 0;
453
454 if (adc_results[0])
455 *target_voltage = 2 * ((float)adc_results[1]) * (float)(1.2 / adc_results[0]);
456
457 LOG_INFO("Target voltage: %f", (double)*target_voltage);
458
459 return ERROR_OK;
460 }
461
462 /** */
463 static int stlink_usb_current_mode(void *handle, uint8_t *mode)
464 {
465 int res;
466 struct stlink_usb_handle_s *h;
467
468 assert(handle != NULL);
469
470 h = (struct stlink_usb_handle_s *)handle;
471
472 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
473
474 h->cmdbuf[h->cmdidx++] = STLINK_GET_CURRENT_MODE;
475
476 res = stlink_usb_xfer(handle, h->databuf, 2);
477
478 if (res != ERROR_OK)
479 return res;
480
481 *mode = h->databuf[0];
482
483 return ERROR_OK;
484 }
485
486 /** */
487 static int stlink_usb_mode_enter(void *handle, enum stlink_mode type)
488 {
489 int res;
490 int rx_size = 0;
491 struct stlink_usb_handle_s *h;
492
493 assert(handle != NULL);
494
495 h = (struct stlink_usb_handle_s *)handle;
496
497 /* on api V2 we are able the read the latest command
498 * status
499 * TODO: we need the test on api V1 too
500 */
501 if (h->jtag_api == STLINK_JTAG_API_V2)
502 rx_size = 2;
503
504 stlink_usb_init_buffer(handle, STLINK_RX_EP, rx_size);
505
506 switch (type) {
507 case STLINK_MODE_DEBUG_JTAG:
508 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
509 if (h->jtag_api == STLINK_JTAG_API_V1)
510 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
511 else
512 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
513 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_JTAG;
514 break;
515 case STLINK_MODE_DEBUG_SWD:
516 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
517 if (h->jtag_api == STLINK_JTAG_API_V1)
518 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
519 else
520 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
521 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_SWD;
522 break;
523 case STLINK_MODE_DEBUG_SWIM:
524 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
525 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER;
526 break;
527 case STLINK_MODE_DFU:
528 case STLINK_MODE_MASS:
529 default:
530 return ERROR_FAIL;
531 }
532
533 res = stlink_usb_xfer(handle, h->databuf, rx_size);
534
535 if (res != ERROR_OK)
536 return res;
537
538 res = stlink_usb_error_check(h);
539
540 return res;
541 }
542
543 /** */
544 static int stlink_usb_mode_leave(void *handle, enum stlink_mode type)
545 {
546 int res;
547 struct stlink_usb_handle_s *h;
548
549 assert(handle != NULL);
550
551 h = (struct stlink_usb_handle_s *)handle;
552
553 stlink_usb_init_buffer(handle, STLINK_NULL_EP, 0);
554
555 switch (type) {
556 case STLINK_MODE_DEBUG_JTAG:
557 case STLINK_MODE_DEBUG_SWD:
558 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
559 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_EXIT;
560 break;
561 case STLINK_MODE_DEBUG_SWIM:
562 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
563 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_EXIT;
564 break;
565 case STLINK_MODE_DFU:
566 h->cmdbuf[h->cmdidx++] = STLINK_DFU_COMMAND;
567 h->cmdbuf[h->cmdidx++] = STLINK_DFU_EXIT;
568 break;
569 case STLINK_MODE_MASS:
570 default:
571 return ERROR_FAIL;
572 }
573
574 res = stlink_usb_xfer(handle, 0, 0);
575
576 if (res != ERROR_OK)
577 return res;
578
579 return ERROR_OK;
580 }
581
582 /** */
583 static int stlink_usb_init_mode(void *handle)
584 {
585 int res;
586 uint8_t mode;
587 enum stlink_mode emode;
588 struct stlink_usb_handle_s *h;
589
590 assert(handle != NULL);
591
592 h = (struct stlink_usb_handle_s *)handle;
593
594 res = stlink_usb_current_mode(handle, &mode);
595
596 if (res != ERROR_OK)
597 return res;
598
599 LOG_DEBUG("MODE: 0x%02X", mode);
600
601 /* try to exit current mode */
602 switch (mode) {
603 case STLINK_DEV_DFU_MODE:
604 emode = STLINK_MODE_DFU;
605 break;
606 case STLINK_DEV_DEBUG_MODE:
607 emode = STLINK_MODE_DEBUG_SWD;
608 break;
609 case STLINK_DEV_SWIM_MODE:
610 emode = STLINK_MODE_DEBUG_SWIM;
611 break;
612 case STLINK_DEV_BOOTLOADER_MODE:
613 case STLINK_DEV_MASS_MODE:
614 default:
615 emode = STLINK_MODE_UNKNOWN;
616 break;
617 }
618
619 if (emode != STLINK_MODE_UNKNOWN) {
620 res = stlink_usb_mode_leave(handle, emode);
621
622 if (res != ERROR_OK)
623 return res;
624 }
625
626 res = stlink_usb_current_mode(handle, &mode);
627
628 if (res != ERROR_OK)
629 return res;
630
631 /* we check the target voltage here as an aid to debugging connection problems.
632 * the stlink requires the target Vdd to be connected for reliable debugging.
633 * this cmd is supported in all modes except DFU
634 */
635 if (mode != STLINK_DEV_DFU_MODE) {
636
637 float target_voltage;
638
639 /* check target voltage (if supported) */
640 res = stlink_usb_check_voltage(h, &target_voltage);
641
642 if (res != ERROR_OK) {
643 if (res != ERROR_COMMAND_NOTFOUND)
644 LOG_ERROR("voltage check failed");
645 /* attempt to continue as it is not a catastrophic failure */
646 } else {
647 /* check for a sensible target voltage, operating range is 1.65-5.5v
648 * according to datasheet */
649 if (target_voltage < 1.5)
650 LOG_ERROR("target voltage may be too low for reliable debugging");
651 }
652 }
653
654 LOG_DEBUG("MODE: 0x%02X", mode);
655
656 /* set selected mode */
657 switch (h->transport) {
658 case HL_TRANSPORT_SWD:
659 emode = STLINK_MODE_DEBUG_SWD;
660 break;
661 case HL_TRANSPORT_JTAG:
662 emode = STLINK_MODE_DEBUG_JTAG;
663 break;
664 case HL_TRANSPORT_SWIM:
665 emode = STLINK_MODE_DEBUG_SWIM;
666 break;
667 default:
668 emode = STLINK_MODE_UNKNOWN;
669 break;
670 }
671
672 if (emode == STLINK_MODE_UNKNOWN) {
673 LOG_ERROR("selected mode (transport) not supported");
674 return ERROR_FAIL;
675 }
676
677 res = stlink_usb_mode_enter(handle, emode);
678
679 if (res != ERROR_OK)
680 return res;
681
682 res = stlink_usb_current_mode(handle, &mode);
683
684 if (res != ERROR_OK)
685 return res;
686
687 LOG_DEBUG("MODE: 0x%02X", mode);
688
689 return ERROR_OK;
690 }
691
692 /** */
693 static int stlink_usb_idcode(void *handle, uint32_t *idcode)
694 {
695 int res;
696 struct stlink_usb_handle_s *h;
697
698 assert(handle != NULL);
699
700 h = (struct stlink_usb_handle_s *)handle;
701
702 stlink_usb_init_buffer(handle, STLINK_RX_EP, 4);
703
704 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
705 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READCOREID;
706
707 res = stlink_usb_xfer(handle, h->databuf, 4);
708
709 if (res != ERROR_OK)
710 return res;
711
712 *idcode = le_to_h_u32(h->databuf);
713
714 LOG_DEBUG("IDCODE: 0x%08X", *idcode);
715
716 return ERROR_OK;
717 }
718
719 static int stlink_usb_v2_read_debug_reg(void *handle, uint32_t addr, uint32_t *val)
720 {
721 struct stlink_usb_handle_s *h;
722 int res;
723
724 assert(handle != NULL);
725
726 h = (struct stlink_usb_handle_s *)handle;
727
728 stlink_usb_init_buffer(handle, STLINK_RX_EP, 8);
729
730 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
731 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READDEBUGREG;
732 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
733 h->cmdidx += 4;
734
735 res = stlink_usb_xfer(handle, h->databuf, 8);
736
737 if (res != ERROR_OK)
738 return res;
739
740 *val = le_to_h_u32(h->databuf + 4);
741
742 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
743 }
744
745 static int stlink_usb_write_debug_reg(void *handle, uint32_t addr, uint32_t val)
746 {
747 int res;
748 struct stlink_usb_handle_s *h;
749
750 assert(handle != NULL);
751
752 h = (struct stlink_usb_handle_s *)handle;
753
754 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
755
756 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
757 if (h->jtag_api == STLINK_JTAG_API_V1)
758 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEDEBUGREG;
759 else
760 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEDEBUGREG;
761 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
762 h->cmdidx += 4;
763 h_u32_to_le(h->cmdbuf+h->cmdidx, val);
764 h->cmdidx += 4;
765
766 res = stlink_usb_xfer(handle, h->databuf, 2);
767
768 if (res != ERROR_OK)
769 return res;
770
771 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
772 }
773
774 static enum target_state stlink_usb_v2_get_status(void *handle)
775 {
776 int result;
777 uint32_t status;
778
779 result = stlink_usb_v2_read_debug_reg(handle, DCB_DHCSR, &status);
780 if (result != ERROR_OK)
781 return TARGET_UNKNOWN;
782
783 if (status & S_HALT)
784 return TARGET_HALTED;
785 else if (status & S_RESET_ST)
786 return TARGET_RESET;
787
788 return TARGET_RUNNING;
789 }
790
791 /** */
792 static enum target_state stlink_usb_state(void *handle)
793 {
794 int res;
795 struct stlink_usb_handle_s *h;
796
797 assert(handle != NULL);
798
799 h = (struct stlink_usb_handle_s *)handle;
800
801 if (h->jtag_api == STLINK_JTAG_API_V2)
802 return stlink_usb_v2_get_status(handle);
803
804 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
805
806 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
807 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_GETSTATUS;
808
809 res = stlink_usb_xfer(handle, h->databuf, 2);
810
811 if (res != ERROR_OK)
812 return TARGET_UNKNOWN;
813
814 if (h->databuf[0] == STLINK_CORE_RUNNING)
815 return TARGET_RUNNING;
816 if (h->databuf[0] == STLINK_CORE_HALTED)
817 return TARGET_HALTED;
818
819 return TARGET_UNKNOWN;
820 }
821
822 /** */
823 static int stlink_usb_reset(void *handle)
824 {
825 int res;
826 struct stlink_usb_handle_s *h;
827
828 assert(handle != NULL);
829
830 h = (struct stlink_usb_handle_s *)handle;
831
832 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
833
834 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
835
836 if (h->jtag_api == STLINK_JTAG_API_V1)
837 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_RESETSYS;
838 else
839 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_RESETSYS;
840
841 res = stlink_usb_xfer(handle, h->databuf, 2);
842
843 if (res != ERROR_OK)
844 return res;
845
846 LOG_DEBUG("RESET: 0x%08X", h->databuf[0]);
847
848 /* the following is not a error under swd (using hardware srst), so return success */
849 if (h->databuf[0] == STLINK_SWD_AP_WAIT || h->databuf[0] == STLINK_SWD_DP_WAIT)
850 return ERROR_OK;
851
852 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
853 }
854
855 static int stlink_usb_assert_srst(void *handle, int srst)
856 {
857 int res;
858 struct stlink_usb_handle_s *h;
859
860 assert(handle != NULL);
861
862 h = (struct stlink_usb_handle_s *)handle;
863
864 if (h->jtag_api == STLINK_JTAG_API_V1)
865 return ERROR_COMMAND_NOTFOUND;
866
867 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
868
869 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
870 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_DRIVE_NRST;
871 h->cmdbuf[h->cmdidx++] = srst;
872
873 res = stlink_usb_xfer(handle, h->databuf, 2);
874
875 if (res != ERROR_OK)
876 return res;
877
878 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
879 }
880
881 /** */
882 static int stlink_usb_run(void *handle)
883 {
884 int res;
885 struct stlink_usb_handle_s *h;
886
887 assert(handle != NULL);
888
889 h = (struct stlink_usb_handle_s *)handle;
890
891 if (h->jtag_api == STLINK_JTAG_API_V2)
892 return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_DEBUGEN);
893
894 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
895
896 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
897 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_RUNCORE;
898
899 res = stlink_usb_xfer(handle, h->databuf, 2);
900
901 if (res != ERROR_OK)
902 return res;
903
904 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
905 }
906
907 /** */
908 static int stlink_usb_halt(void *handle)
909 {
910 int res;
911 struct stlink_usb_handle_s *h;
912
913 assert(handle != NULL);
914
915 h = (struct stlink_usb_handle_s *)handle;
916
917 if (h->jtag_api == STLINK_JTAG_API_V2)
918 return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
919
920 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
921
922 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
923 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_FORCEDEBUG;
924
925 res = stlink_usb_xfer(handle, h->databuf, 2);
926
927 if (res != ERROR_OK)
928 return res;
929
930 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
931 }
932
933 /** */
934 static int stlink_usb_step(void *handle)
935 {
936 int res;
937 struct stlink_usb_handle_s *h;
938
939 assert(handle != NULL);
940
941 h = (struct stlink_usb_handle_s *)handle;
942
943 if (h->jtag_api == STLINK_JTAG_API_V2) {
944 /* TODO: this emulates the v1 api, it should really use a similar auto mask isr
945 * that the cortex-m3 currently does. */
946 stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_MASKINTS|C_DEBUGEN);
947 stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_STEP|C_MASKINTS|C_DEBUGEN);
948 return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
949 }
950
951 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
952
953 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
954 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_STEPCORE;
955
956 res = stlink_usb_xfer(handle, h->databuf, 2);
957
958 if (res != ERROR_OK)
959 return res;
960
961 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
962 }
963
964 /** */
965 static int stlink_usb_read_regs(void *handle)
966 {
967 int res;
968 struct stlink_usb_handle_s *h;
969
970 assert(handle != NULL);
971
972 h = (struct stlink_usb_handle_s *)handle;
973
974 stlink_usb_init_buffer(handle, STLINK_RX_EP, 84);
975
976 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
977 if (h->jtag_api == STLINK_JTAG_API_V1)
978 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READALLREGS;
979 else
980 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READALLREGS;
981
982 res = stlink_usb_xfer(handle, h->databuf, 84);
983
984 if (res != ERROR_OK)
985 return res;
986
987 return ERROR_OK;
988 }
989
990 /** */
991 static int stlink_usb_read_reg(void *handle, int num, uint32_t *val)
992 {
993 int res;
994 struct stlink_usb_handle_s *h;
995
996 assert(handle != NULL);
997
998 h = (struct stlink_usb_handle_s *)handle;
999
1000 stlink_usb_init_buffer(handle, STLINK_RX_EP, h->jtag_api == STLINK_JTAG_API_V1 ? 4 : 8);
1001
1002 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1003 if (h->jtag_api == STLINK_JTAG_API_V1)
1004 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READREG;
1005 else
1006 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READREG;
1007 h->cmdbuf[h->cmdidx++] = num;
1008
1009 res = stlink_usb_xfer(handle, h->databuf, h->jtag_api == STLINK_JTAG_API_V1 ? 4 : 8);
1010
1011 if (res != ERROR_OK)
1012 return res;
1013
1014 if (h->jtag_api == STLINK_JTAG_API_V1)
1015 *val = le_to_h_u32(h->databuf);
1016 else {
1017 *val = le_to_h_u32(h->databuf + 4);
1018 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
1019 }
1020
1021 return ERROR_OK;
1022 }
1023
1024 /** */
1025 static int stlink_usb_write_reg(void *handle, int num, uint32_t val)
1026 {
1027 int res;
1028 struct stlink_usb_handle_s *h;
1029
1030 assert(handle != NULL);
1031
1032 h = (struct stlink_usb_handle_s *)handle;
1033
1034 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
1035
1036 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1037 if (h->jtag_api == STLINK_JTAG_API_V1)
1038 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEREG;
1039 else
1040 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEREG;
1041 h->cmdbuf[h->cmdidx++] = num;
1042 h_u32_to_le(h->cmdbuf+h->cmdidx, val);
1043 h->cmdidx += 4;
1044
1045 res = stlink_usb_xfer(handle, h->databuf, 2);
1046
1047 if (res != ERROR_OK)
1048 return res;
1049
1050 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
1051 }
1052
1053 static int stlink_usb_get_rw_status(void *handle)
1054 {
1055 int res;
1056 struct stlink_usb_handle_s *h;
1057
1058 assert(handle != NULL);
1059
1060 h = (struct stlink_usb_handle_s *)handle;
1061
1062 if (h->jtag_api == STLINK_JTAG_API_V1)
1063 return ERROR_OK;
1064
1065 stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
1066
1067 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1068 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS;
1069
1070 res = stlink_usb_xfer(handle, h->databuf, 2);
1071
1072 if (res != ERROR_OK)
1073 return res;
1074
1075 return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : res;
1076 }
1077
1078 /** */
1079 static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len,
1080 uint8_t *buffer)
1081 {
1082 int res;
1083 uint16_t read_len = len;
1084 struct stlink_usb_handle_s *h;
1085
1086 assert(handle != NULL);
1087
1088 h = (struct stlink_usb_handle_s *)handle;
1089
1090 stlink_usb_init_buffer(handle, STLINK_RX_EP, read_len);
1091
1092 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1093 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_8BIT;
1094 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1095 h->cmdidx += 4;
1096 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1097 h->cmdidx += 2;
1098
1099 /* we need to fix read length for single bytes */
1100 if (read_len == 1)
1101 read_len++;
1102
1103 res = stlink_usb_xfer(handle, h->databuf, read_len);
1104
1105 if (res != ERROR_OK)
1106 return res;
1107
1108 memcpy(buffer, h->databuf, len);
1109
1110 return stlink_usb_get_rw_status(handle);
1111 }
1112
1113 /** */
1114 static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len,
1115 const uint8_t *buffer)
1116 {
1117 int res;
1118 struct stlink_usb_handle_s *h;
1119
1120 assert(handle != NULL);
1121
1122 h = (struct stlink_usb_handle_s *)handle;
1123
1124 stlink_usb_init_buffer(handle, STLINK_TX_EP, len);
1125
1126 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1127 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_8BIT;
1128 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1129 h->cmdidx += 4;
1130 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1131 h->cmdidx += 2;
1132
1133 res = stlink_usb_xfer(handle, buffer, len);
1134
1135 if (res != ERROR_OK)
1136 return res;
1137
1138 return stlink_usb_get_rw_status(handle);
1139 }
1140
1141 /** */
1142 static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
1143 uint8_t *buffer)
1144 {
1145 int res;
1146 struct stlink_usb_handle_s *h;
1147
1148 assert(handle != NULL);
1149
1150 h = (struct stlink_usb_handle_s *)handle;
1151
1152 len *= 4;
1153
1154 stlink_usb_init_buffer(handle, STLINK_RX_EP, len);
1155
1156 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1157 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_32BIT;
1158 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1159 h->cmdidx += 4;
1160 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1161 h->cmdidx += 2;
1162
1163 res = stlink_usb_xfer(handle, h->databuf, len);
1164
1165 if (res != ERROR_OK)
1166 return res;
1167
1168 memcpy(buffer, h->databuf, len);
1169
1170 return stlink_usb_get_rw_status(handle);
1171 }
1172
1173 /** */
1174 static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
1175 const uint8_t *buffer)
1176 {
1177 int res;
1178 struct stlink_usb_handle_s *h;
1179
1180 assert(handle != NULL);
1181
1182 h = (struct stlink_usb_handle_s *)handle;
1183
1184 len *= 4;
1185
1186 stlink_usb_init_buffer(handle, STLINK_TX_EP, len);
1187
1188 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1189 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_32BIT;
1190 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1191 h->cmdidx += 4;
1192 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1193 h->cmdidx += 2;
1194
1195 res = stlink_usb_xfer(handle, buffer, len);
1196
1197 if (res != ERROR_OK)
1198 return res;
1199
1200 return stlink_usb_get_rw_status(handle);
1201 }
1202
1203 /** */
1204 static int stlink_usb_close(void *fd)
1205 {
1206 struct stlink_usb_handle_s *h;
1207
1208 h = (struct stlink_usb_handle_s *)fd;
1209
1210 if (h->fd)
1211 jtag_libusb_close(h->fd);
1212
1213 free(fd);
1214
1215 return ERROR_OK;
1216 }
1217
1218 /** */
1219 static int stlink_usb_open(struct hl_interface_param_s *param, void **fd)
1220 {
1221 int err;
1222 struct stlink_usb_handle_s *h;
1223 enum stlink_jtag_api_version api;
1224
1225 LOG_DEBUG("stlink_usb_open");
1226
1227 h = calloc(1, sizeof(struct stlink_usb_handle_s));
1228
1229 if (h == 0) {
1230 LOG_DEBUG("malloc failed");
1231 return ERROR_FAIL;
1232 }
1233
1234 h->transport = param->transport;
1235
1236 /* set max read/write buffer size in bytes */
1237 param->max_buffer = 512;
1238
1239 const uint16_t vids[] = { param->vid, 0 };
1240 const uint16_t pids[] = { param->pid, 0 };
1241
1242 LOG_DEBUG("transport: %d vid: 0x%04x pid: 0x%04x", param->transport,
1243 param->vid, param->pid);
1244
1245 if (jtag_libusb_open(vids, pids, &h->fd) != ERROR_OK) {
1246 LOG_ERROR("open failed");
1247 goto error_open;
1248 }
1249
1250 jtag_libusb_set_configuration(h->fd, 0);
1251
1252 if (jtag_libusb_claim_interface(h->fd, 0) != ERROR_OK) {
1253 LOG_DEBUG("claim interface failed");
1254 goto error_open;
1255 }
1256
1257 /* wrap version for first read */
1258 switch (param->pid) {
1259 case 0x3744:
1260 h->version.stlink = 1;
1261 break;
1262 default:
1263 h->version.stlink = 2;
1264 break;
1265 }
1266
1267 /* get the device version */
1268 err = stlink_usb_version(h);
1269
1270 if (err != ERROR_OK) {
1271 LOG_ERROR("read version failed");
1272 goto error_open;
1273 }
1274
1275 /* compare usb vid/pid */
1276 if ((param->vid != h->vid) || (param->pid != h->pid))
1277 LOG_INFO("vid/pid are not identical: 0x%04X/0x%04X 0x%04X/0x%04X",
1278 param->vid, param->pid,
1279 h->vid, h->pid);
1280
1281 /* check if mode is supported */
1282 err = ERROR_OK;
1283
1284 switch (h->transport) {
1285 case HL_TRANSPORT_SWD:
1286 case HL_TRANSPORT_JTAG:
1287 if (h->version.jtag == 0)
1288 err = ERROR_FAIL;
1289 break;
1290 case HL_TRANSPORT_SWIM:
1291 if (h->version.swim == 0)
1292 err = ERROR_FAIL;
1293 break;
1294 default:
1295 err = ERROR_FAIL;
1296 break;
1297 }
1298
1299 if (err != ERROR_OK) {
1300 LOG_ERROR("mode (transport) not supported by device");
1301 goto error_open;
1302 }
1303
1304 api = h->version.jtag_api_max;
1305
1306 /* check that user has not requested certain api version
1307 * and if they have check it is supported */
1308 if ((param->api != 0) && (param->api <= h->version.jtag_api_max)) {
1309 api = param->api;
1310 LOG_INFO("using stlink api v%d", api);
1311 }
1312
1313 /* set the used jtag api, this will default to the newest supported version */
1314 h->jtag_api = api;
1315
1316 /* initialize the debug hardware */
1317 err = stlink_usb_init_mode(h);
1318
1319 if (err != ERROR_OK) {
1320 LOG_ERROR("init mode failed");
1321 goto error_open;
1322 }
1323
1324 *fd = h;
1325
1326 return ERROR_OK;
1327
1328 error_open:
1329 stlink_usb_close(h);
1330
1331 return ERROR_FAIL;
1332 }
1333
1334 /** */
1335 struct hl_layout_api_s stlink_usb_layout_api = {
1336 /** */
1337 .open = stlink_usb_open,
1338 /** */
1339 .close = stlink_usb_close,
1340 /** */
1341 .idcode = stlink_usb_idcode,
1342 /** */
1343 .state = stlink_usb_state,
1344 /** */
1345 .reset = stlink_usb_reset,
1346 /** */
1347 .assert_srst = stlink_usb_assert_srst,
1348 /** */
1349 .run = stlink_usb_run,
1350 /** */
1351 .halt = stlink_usb_halt,
1352 /** */
1353 .step = stlink_usb_step,
1354 /** */
1355 .read_regs = stlink_usb_read_regs,
1356 /** */
1357 .read_reg = stlink_usb_read_reg,
1358 /** */
1359 .write_reg = stlink_usb_write_reg,
1360 /** */
1361 .read_mem8 = stlink_usb_read_mem8,
1362 /** */
1363 .write_mem8 = stlink_usb_write_mem8,
1364 /** */
1365 .read_mem32 = stlink_usb_read_mem32,
1366 /** */
1367 .write_mem32 = stlink_usb_write_mem32,
1368 /** */
1369 .write_debug_reg = stlink_usb_write_debug_reg
1370 };