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target/arm_cti: add new 'ack' and 'channel' commands
[openocd.git] / src / target / arm_cti.c
blobd415eb3a8fa658c09242756b392394f1237d2128
1 /***************************************************************************
2 * Copyright (C) 2016 by Matthias Welwarsky *
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 * *
18 ***************************************************************************/
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <stdlib.h>
25 #include <stdint.h>
26 #include "target/arm_adi_v5.h"
27 #include "target/arm_cti.h"
28 #include "target/target.h"
29 #include "helper/time_support.h"
30 #include "helper/list.h"
31 #include "helper/command.h"
32
33 struct arm_cti {
34 target_addr_t base;
35 struct adiv5_ap *ap;
36 };
37
38 struct arm_cti_object {
39 struct list_head lh;
40 struct arm_cti cti;
41 int ap_num;
42 char *name;
43 };
44
45 static LIST_HEAD(all_cti);
46
47 const char *arm_cti_name(struct arm_cti *self)
48 {
49 struct arm_cti_object *obj = container_of(self, struct arm_cti_object, cti);
50 return obj->name;
51 }
52
53 struct arm_cti *cti_instance_by_jim_obj(Jim_Interp *interp, Jim_Obj *o)
54 {
55 struct arm_cti_object *obj = NULL;
56 const char *name;
57 bool found = false;
58
59 name = Jim_GetString(o, NULL);
60
61 list_for_each_entry(obj, &all_cti, lh) {
62 if (!strcmp(name, obj->name)) {
63 found = true;
64 break;
65 }
66 }
67
68 if (found)
69 return &obj->cti;
70 return NULL;
71 }
72
73 static int arm_cti_mod_reg_bits(struct arm_cti *self, unsigned int reg, uint32_t mask, uint32_t value)
74 {
75 uint32_t tmp;
76
77 /* Read register */
78 int retval = mem_ap_read_atomic_u32(self->ap, self->base + reg, &tmp);
79 if (ERROR_OK != retval)
80 return retval;
81
82 /* clear bitfield */
83 tmp &= ~mask;
84 /* put new value */
85 tmp |= value & mask;
86
87 /* write new value */
88 return mem_ap_write_atomic_u32(self->ap, self->base + reg, tmp);
89 }
90
91 int arm_cti_enable(struct arm_cti *self, bool enable)
92 {
93 uint32_t val = enable ? 1 : 0;
94
95 return mem_ap_write_atomic_u32(self->ap, self->base + CTI_CTR, val);
96 }
97
98 int arm_cti_ack_events(struct arm_cti *self, uint32_t event)
99 {
100 int retval;
101 uint32_t tmp;
102
103 retval = mem_ap_write_atomic_u32(self->ap, self->base + CTI_INACK, event);
104 if (retval == ERROR_OK) {
105 int64_t then = timeval_ms();
106 for (;;) {
107 retval = mem_ap_read_atomic_u32(self->ap, self->base + CTI_TROUT_STATUS, &tmp);
108 if (retval != ERROR_OK)
109 break;
110 if ((tmp & event) == 0)
111 break;
112 if (timeval_ms() > then + 1000) {
113 LOG_ERROR("timeout waiting for target");
114 retval = ERROR_TARGET_TIMEOUT;
115 break;
116 }
117 }
118 }
119
120 return retval;
121 }
122
123 int arm_cti_gate_channel(struct arm_cti *self, uint32_t channel)
124 {
125 if (channel > 31)
126 return ERROR_COMMAND_ARGUMENT_INVALID;
127
128 return arm_cti_mod_reg_bits(self, CTI_GATE, CTI_CHNL(channel), 0);
129 }
130
131 int arm_cti_ungate_channel(struct arm_cti *self, uint32_t channel)
132 {
133 if (channel > 31)
134 return ERROR_COMMAND_ARGUMENT_INVALID;
135
136 return arm_cti_mod_reg_bits(self, CTI_GATE, CTI_CHNL(channel), 0xFFFFFFFF);
137 }
138
139 int arm_cti_write_reg(struct arm_cti *self, unsigned int reg, uint32_t value)
140 {
141 return mem_ap_write_atomic_u32(self->ap, self->base + reg, value);
142 }
143
144 int arm_cti_read_reg(struct arm_cti *self, unsigned int reg, uint32_t *p_value)
145 {
146 if (p_value == NULL)
147 return ERROR_COMMAND_ARGUMENT_INVALID;
148
149 return mem_ap_read_atomic_u32(self->ap, self->base + reg, p_value);
150 }
151
152 int arm_cti_pulse_channel(struct arm_cti *self, uint32_t channel)
153 {
154 if (channel > 31)
155 return ERROR_COMMAND_ARGUMENT_INVALID;
156
157 return arm_cti_write_reg(self, CTI_APPPULSE, CTI_CHNL(channel));
158 }
159
160 int arm_cti_set_channel(struct arm_cti *self, uint32_t channel)
161 {
162 if (channel > 31)
163 return ERROR_COMMAND_ARGUMENT_INVALID;
164
165 return arm_cti_write_reg(self, CTI_APPSET, CTI_CHNL(channel));
166 }
167
168 int arm_cti_clear_channel(struct arm_cti *self, uint32_t channel)
169 {
170 if (channel > 31)
171 return ERROR_COMMAND_ARGUMENT_INVALID;
172
173 return arm_cti_write_reg(self, CTI_APPCLEAR, CTI_CHNL(channel));
174 }
175
176 static uint32_t cti_regs[28];
177
178 static const struct {
179 uint32_t offset;
180 const char *label;
181 uint32_t *p_val;
182 } cti_names[] = {
183 { CTI_CTR, "CTR", &cti_regs[0] },
184 { CTI_GATE, "GATE", &cti_regs[1] },
185 { CTI_INEN0, "INEN0", &cti_regs[2] },
186 { CTI_INEN1, "INEN1", &cti_regs[3] },
187 { CTI_INEN2, "INEN2", &cti_regs[4] },
188 { CTI_INEN3, "INEN3", &cti_regs[5] },
189 { CTI_INEN4, "INEN4", &cti_regs[6] },
190 { CTI_INEN5, "INEN5", &cti_regs[7] },
191 { CTI_INEN6, "INEN6", &cti_regs[8] },
192 { CTI_INEN7, "INEN7", &cti_regs[9] },
193 { CTI_INEN8, "INEN8", &cti_regs[10] },
194 { CTI_OUTEN0, "OUTEN0", &cti_regs[11] },
195 { CTI_OUTEN1, "OUTEN1", &cti_regs[12] },
196 { CTI_OUTEN2, "OUTEN2", &cti_regs[13] },
197 { CTI_OUTEN3, "OUTEN3", &cti_regs[14] },
198 { CTI_OUTEN4, "OUTEN4", &cti_regs[15] },
199 { CTI_OUTEN5, "OUTEN5", &cti_regs[16] },
200 { CTI_OUTEN6, "OUTEN6", &cti_regs[17] },
201 { CTI_OUTEN7, "OUTEN7", &cti_regs[18] },
202 { CTI_OUTEN8, "OUTEN8", &cti_regs[19] },
203 { CTI_TRIN_STATUS, "TRIN", &cti_regs[20] },
204 { CTI_TROUT_STATUS, "TROUT", &cti_regs[21] },
205 { CTI_CHIN_STATUS, "CHIN", &cti_regs[22] },
206 { CTI_CHOU_STATUS, "CHOUT", &cti_regs[23] },
207 { CTI_APPSET, "APPSET", &cti_regs[24] },
208 { CTI_APPCLEAR, "APPCLR", &cti_regs[25] },
209 { CTI_APPPULSE, "APPPULSE", &cti_regs[26] },
210 { CTI_INACK, "INACK", &cti_regs[27] },
211 };
212
213 static int cti_find_reg_offset(const char *name)
214 {
215 unsigned int i;
216
217 for (i = 0; i < ARRAY_SIZE(cti_names); i++) {
218 if (!strcmp(name, cti_names[i].label))
219 return cti_names[i].offset;
220 }
221
222 LOG_ERROR("unknown CTI register %s", name);
223 return -1;
224 }
225
226 int arm_cti_cleanup_all(void)
227 {
228 struct arm_cti_object *obj, *tmp;
229
230 list_for_each_entry_safe(obj, tmp, &all_cti, lh) {
231 free(obj->name);
232 free(obj);
233 }
234
235 return ERROR_OK;
236 }
237
238 COMMAND_HANDLER(handle_cti_dump)
239 {
240 struct arm_cti_object *obj = CMD_DATA;
241 struct arm_cti *cti = &obj->cti;
242 int retval = ERROR_OK;
243
244 for (int i = 0; (retval == ERROR_OK) && (i < (int)ARRAY_SIZE(cti_names)); i++)
245 retval = mem_ap_read_u32(cti->ap,
246 cti->base + cti_names[i].offset, cti_names[i].p_val);
247
248 if (retval == ERROR_OK)
249 retval = dap_run(cti->ap->dap);
250
251 if (retval != ERROR_OK)
252 return JIM_ERR;
253
254 for (int i = 0; i < (int)ARRAY_SIZE(cti_names); i++)
255 command_print(CMD, "%8.8s (0x%04"PRIx32") 0x%08"PRIx32,
256 cti_names[i].label, cti_names[i].offset, *cti_names[i].p_val);
257
258 return JIM_OK;
259 }
260
261 COMMAND_HANDLER(handle_cti_enable)
262 {
263 struct arm_cti_object *obj = CMD_DATA;
264 Jim_Interp *interp = CMD_CTX->interp;
265 struct arm_cti *cti = &obj->cti;
266 bool on_off;
267
268 if (CMD_ARGC != 1) {
269 Jim_SetResultString(interp, "wrong number of args", -1);
270 return ERROR_FAIL;
271 }
272
273 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], on_off);
274
275 return arm_cti_enable(cti, on_off);
276 }
277
278 COMMAND_HANDLER(handle_cti_testmode)
279 {
280 struct arm_cti_object *obj = CMD_DATA;
281 Jim_Interp *interp = CMD_CTX->interp;
282 struct arm_cti *cti = &obj->cti;
283 bool on_off;
284
285 if (CMD_ARGC != 1) {
286 Jim_SetResultString(interp, "wrong number of args", -1);
287 return ERROR_FAIL;
288 }
289
290 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], on_off);
291
292 return arm_cti_write_reg(cti, 0xf00, on_off ? 0x1 : 0x0);
293 }
294
295 COMMAND_HANDLER(handle_cti_write)
296 {
297 struct arm_cti_object *obj = CMD_DATA;
298 Jim_Interp *interp = CMD_CTX->interp;
299 struct arm_cti *cti = &obj->cti;
300 int offset;
301 uint32_t value;
302
303 if (CMD_ARGC != 2) {
304 Jim_SetResultString(interp, "Wrong number of args", -1);
305 return ERROR_FAIL;
306 }
307
308 offset = cti_find_reg_offset(CMD_ARGV[0]);
309 if (offset < 0)
310 return ERROR_FAIL;
311
312 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], value);
313
314 return arm_cti_write_reg(cti, offset, value);
315 }
316
317 COMMAND_HANDLER(handle_cti_read)
318 {
319 struct arm_cti_object *obj = CMD_DATA;
320 Jim_Interp *interp = CMD_CTX->interp;
321 struct arm_cti *cti = &obj->cti;
322 int offset;
323 int retval;
324 uint32_t value;
325
326 if (CMD_ARGC != 1) {
327 Jim_SetResultString(interp, "Wrong number of args", -1);
328 return ERROR_FAIL;
329 }
330
331 offset = cti_find_reg_offset(CMD_ARGV[0]);
332 if (offset < 0)
333 return ERROR_FAIL;
334
335 retval = arm_cti_read_reg(cti, offset, &value);
336 if (retval != ERROR_OK)
337 return retval;
338
339 command_print(CMD, "0x%08"PRIx32, value);
340
341 return ERROR_OK;
342 }
343
344 COMMAND_HANDLER(handle_cti_ack)
345 {
346 struct arm_cti_object *obj = CMD_DATA;
347 struct arm_cti *cti = &obj->cti;
348 uint32_t event;
349
350 if (CMD_ARGC != 1)
351 return ERROR_COMMAND_SYNTAX_ERROR;
352
353 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], event);
354
355 int retval = arm_cti_ack_events(cti, 1 << event);
356
357
358 if (retval != ERROR_OK)
359 return retval;
360
361 return ERROR_OK;
362 }
363
364 COMMAND_HANDLER(handle_cti_channel)
365 {
366 struct arm_cti_object *obj = CMD_DATA;
367 struct arm_cti *cti = &obj->cti;
368 int retval = ERROR_OK;
369 uint32_t ch_num;
370
371 if (CMD_ARGC != 2)
372 return ERROR_COMMAND_SYNTAX_ERROR;
373
374 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], ch_num);
375
376 if (!strcmp(CMD_ARGV[1], "gate"))
377 retval = arm_cti_gate_channel(cti, ch_num);
378 else if (!strcmp(CMD_ARGV[1], "ungate"))
379 retval = arm_cti_ungate_channel(cti, ch_num);
380 else if (!strcmp(CMD_ARGV[1], "pulse"))
381 retval = arm_cti_pulse_channel(cti, ch_num);
382 else if (!strcmp(CMD_ARGV[1], "set"))
383 retval = arm_cti_set_channel(cti, ch_num);
384 else if (!strcmp(CMD_ARGV[1], "clear"))
385 retval = arm_cti_clear_channel(cti, ch_num);
386 else {
387 command_print(CMD, "Possible channel operations: gate|ungate|set|clear|pulse");
388 return ERROR_COMMAND_ARGUMENT_INVALID;
389 }
390
391 if (retval != ERROR_OK)
392 return retval;
393
394 return ERROR_OK;
395 }
396
397 static const struct command_registration cti_instance_command_handlers[] = {
398 {
399 .name = "dump",
400 .mode = COMMAND_EXEC,
401 .handler = handle_cti_dump,
402 .help = "dump CTI registers",
403 .usage = "",
404 },
405 {
406 .name = "enable",
407 .mode = COMMAND_EXEC,
408 .handler = handle_cti_enable,
409 .help = "enable or disable the CTI",
410 .usage = "'on'|'off'",
411 },
412 {
413 .name = "testmode",
414 .mode = COMMAND_EXEC,
415 .handler = handle_cti_testmode,
416 .help = "enable or disable integration test mode",
417 .usage = "'on'|'off'",
418 },
419 {
420 .name = "write",
421 .mode = COMMAND_EXEC,
422 .handler = handle_cti_write,
423 .help = "write to a CTI register",
424 .usage = "register_name value",
425 },
426 {
427 .name = "read",
428 .mode = COMMAND_EXEC,
429 .handler = handle_cti_read,
430 .help = "read a CTI register",
431 .usage = "register_name",
432 },
433 {
434 .name = "ack",
435 .mode = COMMAND_EXEC,
436 .handler = handle_cti_ack,
437 .help = "acknowledge a CTI event",
438 .usage = "event",
439 },
440 {
441 .name = "channel",
442 .mode = COMMAND_EXEC,
443 .handler = handle_cti_channel,
444 .help = "do an operation on one CTI channel, possible operations: "
445 "gate, ungate, set, clear and pulse",
446 .usage = "channel_number operation",
447 },
448 COMMAND_REGISTRATION_DONE
449 };
450
451 enum cti_cfg_param {
452 CFG_DAP,
453 CFG_AP_NUM,
454 CFG_CTIBASE
455 };
456
457 static const Jim_Nvp nvp_config_opts[] = {
458 { .name = "-dap", .value = CFG_DAP },
459 { .name = "-ctibase", .value = CFG_CTIBASE },
460 { .name = "-ap-num", .value = CFG_AP_NUM },
461 { .name = NULL, .value = -1 }
462 };
463
464 static int cti_configure(Jim_GetOptInfo *goi, struct arm_cti_object *cti)
465 {
466 struct adiv5_dap *dap = NULL;
467 Jim_Nvp *n;
468 jim_wide w;
469 int e;
470
471 /* parse config or cget options ... */
472 while (goi->argc > 0) {
473 Jim_SetEmptyResult(goi->interp);
474
475 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
476 if (e != JIM_OK) {
477 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
478 return e;
479 }
480 switch (n->value) {
481 case CFG_DAP: {
482 Jim_Obj *o_t;
483 e = Jim_GetOpt_Obj(goi, &o_t);
484 if (e != JIM_OK)
485 return e;
486 dap = dap_instance_by_jim_obj(goi->interp, o_t);
487 if (dap == NULL) {
488 Jim_SetResultString(goi->interp, "-dap is invalid", -1);
489 return JIM_ERR;
490 }
491 /* loop for more */
492 break;
493 }
494 case CFG_CTIBASE:
495 e = Jim_GetOpt_Wide(goi, &w);
496 if (e != JIM_OK)
497 return e;
498 cti->cti.base = (uint32_t)w;
499 /* loop for more */
500 break;
501
502 case CFG_AP_NUM:
503 e = Jim_GetOpt_Wide(goi, &w);
504 if (e != JIM_OK)
505 return e;
506 if (w < 0 || w > DP_APSEL_MAX) {
507 Jim_SetResultString(goi->interp, "-ap-num is invalid", -1);
508 return JIM_ERR;
509 }
510 cti->ap_num = (uint32_t)w;
511 }
512 }
513
514 if (dap == NULL) {
515 Jim_SetResultString(goi->interp, "-dap required when creating CTI", -1);
516 return JIM_ERR;
517 }
518
519 cti->cti.ap = dap_ap(dap, cti->ap_num);
520
521 return JIM_OK;
522 }
523
524 static int cti_create(Jim_GetOptInfo *goi)
525 {
526 struct command_context *cmd_ctx;
527 static struct arm_cti_object *cti;
528 Jim_Obj *new_cmd;
529 Jim_Cmd *cmd;
530 const char *cp;
531 int e;
532
533 cmd_ctx = current_command_context(goi->interp);
534 assert(cmd_ctx != NULL);
535
536 if (goi->argc < 3) {
537 Jim_WrongNumArgs(goi->interp, 1, goi->argv, "?name? ..options...");
538 return JIM_ERR;
539 }
540 /* COMMAND */
541 Jim_GetOpt_Obj(goi, &new_cmd);
542 /* does this command exist? */
543 cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_ERRMSG);
544 if (cmd) {
545 cp = Jim_GetString(new_cmd, NULL);
546 Jim_SetResultFormatted(goi->interp, "Command: %s Exists", cp);
547 return JIM_ERR;
548 }
549
550 /* Create it */
551 cti = calloc(1, sizeof(struct arm_cti_object));
552 if (cti == NULL)
553 return JIM_ERR;
554
555 e = cti_configure(goi, cti);
556 if (e != JIM_OK) {
557 free(cti);
558 return e;
559 }
560
561 cp = Jim_GetString(new_cmd, NULL);
562 cti->name = strdup(cp);
563
564 /* now - create the new cti name command */
565 const struct command_registration cti_subcommands[] = {
566 {
567 .chain = cti_instance_command_handlers,
568 },
569 COMMAND_REGISTRATION_DONE
570 };
571 const struct command_registration cti_commands[] = {
572 {
573 .name = cp,
574 .mode = COMMAND_ANY,
575 .help = "cti instance command group",
576 .usage = "",
577 .chain = cti_subcommands,
578 },
579 COMMAND_REGISTRATION_DONE
580 };
581 e = register_commands(cmd_ctx, NULL, cti_commands);
582 if (ERROR_OK != e)
583 return JIM_ERR;
584
585 struct command *c = command_find_in_context(cmd_ctx, cp);
586 assert(c);
587 command_set_handler_data(c, cti);
588
589 list_add_tail(&cti->lh, &all_cti);
590
591 return (ERROR_OK == e) ? JIM_OK : JIM_ERR;
592 }
593
594 static int jim_cti_create(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
595 {
596 Jim_GetOptInfo goi;
597 Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
598 if (goi.argc < 2) {
599 Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
600 "<name> [<cti_options> ...]");
601 return JIM_ERR;
602 }
603 return cti_create(&goi);
604 }
605
606 static int jim_cti_names(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
607 {
608 struct arm_cti_object *obj;
609
610 if (argc != 1) {
611 Jim_WrongNumArgs(interp, 1, argv, "Too many parameters");
612 return JIM_ERR;
613 }
614 Jim_SetResult(interp, Jim_NewListObj(interp, NULL, 0));
615 list_for_each_entry(obj, &all_cti, lh) {
616 Jim_ListAppendElement(interp, Jim_GetResult(interp),
617 Jim_NewStringObj(interp, obj->name, -1));
618 }
619 return JIM_OK;
620 }
621
622
623 static const struct command_registration cti_subcommand_handlers[] = {
624 {
625 .name = "create",
626 .mode = COMMAND_ANY,
627 .jim_handler = jim_cti_create,
628 .usage = "name '-chain-position' name [options ...]",
629 .help = "Creates a new CTI object",
630 },
631 {
632 .name = "names",
633 .mode = COMMAND_ANY,
634 .jim_handler = jim_cti_names,
635 .usage = "",
636 .help = "Lists all registered CTI objects by name",
637 },
638 COMMAND_REGISTRATION_DONE
639 };
640
641 static const struct command_registration cti_command_handlers[] = {
642 {
643 .name = "cti",
644 .mode = COMMAND_CONFIG,
645 .help = "CTI commands",
646 .chain = cti_subcommand_handlers,
647 .usage = "",
648 },
649 COMMAND_REGISTRATION_DONE
650 };
651
652 int cti_register_commands(struct command_context *cmd_ctx)
653 {
654 return register_commands(cmd_ctx, NULL, cti_command_handlers);
655 }
656
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