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8
9#include <asm/bug.h>
10#include <linux/coresight-pmu.h>
11#include <linux/err.h>
12#include <linux/list.h>
13#include <linux/zalloc.h>
14#include <stdlib.h>
15#include <opencsd/c_api/opencsd_c_api.h>
16
17#include "cs-etm.h"
18#include "cs-etm-decoder.h"
19#include "debug.h"
20#include "intlist.h"
21
22
23#ifdef CS_DEBUG_RAW
24#define CS_LOG_RAW_FRAMES
25#ifdef CS_RAW_PACKED
26#define CS_RAW_DEBUG_FLAGS (OCSD_DFRMTR_UNPACKED_RAW_OUT | \
27 OCSD_DFRMTR_PACKED_RAW_OUT)
28#else
29#define CS_RAW_DEBUG_FLAGS (OCSD_DFRMTR_UNPACKED_RAW_OUT)
30#endif
31#endif
32
33struct cs_etm_decoder {
34 void *data;
35 void (*packet_printer)(const char *msg);
36 bool suppress_printing;
37 dcd_tree_handle_t dcd_tree;
38 cs_etm_mem_cb_type mem_access;
39 ocsd_datapath_resp_t prev_return;
40 const char *decoder_name;
41};
42
43static u32
44cs_etm_decoder__mem_access(const void *context,
45 const ocsd_vaddr_t address,
46 const ocsd_mem_space_acc_t mem_space __maybe_unused,
47 const u8 trace_chan_id,
48 const u32 req_size,
49 u8 *buffer)
50{
51 struct cs_etm_decoder *decoder = (struct cs_etm_decoder *) context;
52
53 return decoder->mem_access(decoder->data, trace_chan_id,
54 address, req_size, buffer);
55}
56
57int cs_etm_decoder__add_mem_access_cb(struct cs_etm_decoder *decoder,
58 u64 start, u64 end,
59 cs_etm_mem_cb_type cb_func)
60{
61 decoder->mem_access = cb_func;
62
63 if (ocsd_dt_add_callback_trcid_mem_acc(decoder->dcd_tree, start, end,
64 OCSD_MEM_SPACE_ANY,
65 cs_etm_decoder__mem_access,
66 decoder))
67 return -1;
68
69 return 0;
70}
71
72int cs_etm_decoder__reset(struct cs_etm_decoder *decoder)
73{
74 ocsd_datapath_resp_t dp_ret;
75
76 decoder->prev_return = OCSD_RESP_CONT;
77 decoder->suppress_printing = true;
78 dp_ret = ocsd_dt_process_data(decoder->dcd_tree, OCSD_OP_RESET,
79 0, 0, NULL, NULL);
80 decoder->suppress_printing = false;
81 if (OCSD_DATA_RESP_IS_FATAL(dp_ret))
82 return -1;
83
84 return 0;
85}
86
87int cs_etm_decoder__get_packet(struct cs_etm_packet_queue *packet_queue,
88 struct cs_etm_packet *packet)
89{
90 if (!packet_queue || !packet)
91 return -EINVAL;
92
93
94 if (packet_queue->packet_count == 0)
95 return 0;
96
97
98
99
100
101
102
103
104
105 packet_queue->head = (packet_queue->head + 1) &
106 (CS_ETM_PACKET_MAX_BUFFER - 1);
107
108 *packet = packet_queue->packet_buffer[packet_queue->head];
109
110 packet_queue->packet_count--;
111
112 return 1;
113}
114
115static int cs_etm_decoder__gen_etmv3_config(struct cs_etm_trace_params *params,
116 ocsd_etmv3_cfg *config)
117{
118 config->reg_idr = params->etmv3.reg_idr;
119 config->reg_ctrl = params->etmv3.reg_ctrl;
120 config->reg_ccer = params->etmv3.reg_ccer;
121 config->reg_trc_id = params->etmv3.reg_trc_id;
122 config->arch_ver = ARCH_V7;
123 config->core_prof = profile_CortexA;
124
125 return 0;
126}
127
128#define TRCIDR1_TRCARCHMIN_SHIFT 4
129#define TRCIDR1_TRCARCHMIN_MASK GENMASK(7, 4)
130#define TRCIDR1_TRCARCHMIN(x) (((x) & TRCIDR1_TRCARCHMIN_MASK) >> TRCIDR1_TRCARCHMIN_SHIFT)
131
132static enum _ocsd_arch_version cs_etm_decoder__get_etmv4_arch_ver(u32 reg_idr1)
133{
134
135
136
137
138
139
140 return TRCIDR1_TRCARCHMIN(reg_idr1) >= 4 ? ARCH_AA64 : ARCH_V8;
141}
142
143static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
144 ocsd_etmv4_cfg *config)
145{
146 config->reg_configr = params->etmv4.reg_configr;
147 config->reg_traceidr = params->etmv4.reg_traceidr;
148 config->reg_idr0 = params->etmv4.reg_idr0;
149 config->reg_idr1 = params->etmv4.reg_idr1;
150 config->reg_idr2 = params->etmv4.reg_idr2;
151 config->reg_idr8 = params->etmv4.reg_idr8;
152 config->reg_idr9 = 0;
153 config->reg_idr10 = 0;
154 config->reg_idr11 = 0;
155 config->reg_idr12 = 0;
156 config->reg_idr13 = 0;
157 config->arch_ver = cs_etm_decoder__get_etmv4_arch_ver(params->etmv4.reg_idr1);
158 config->core_prof = profile_CortexA;
159}
160
161static void cs_etm_decoder__gen_ete_config(struct cs_etm_trace_params *params,
162 ocsd_ete_cfg *config)
163{
164 config->reg_configr = params->ete.reg_configr;
165 config->reg_traceidr = params->ete.reg_traceidr;
166 config->reg_idr0 = params->ete.reg_idr0;
167 config->reg_idr1 = params->ete.reg_idr1;
168 config->reg_idr2 = params->ete.reg_idr2;
169 config->reg_idr8 = params->ete.reg_idr8;
170 config->reg_devarch = params->ete.reg_devarch;
171 config->arch_ver = ARCH_AA64;
172 config->core_prof = profile_CortexA;
173}
174
175static void cs_etm_decoder__print_str_cb(const void *p_context,
176 const char *msg,
177 const int str_len)
178{
179 const struct cs_etm_decoder *decoder = p_context;
180
181 if (p_context && str_len && !decoder->suppress_printing)
182 decoder->packet_printer(msg);
183}
184
185static int
186cs_etm_decoder__init_def_logger_printing(struct cs_etm_decoder_params *d_params,
187 struct cs_etm_decoder *decoder)
188{
189 int ret = 0;
190
191 if (d_params->packet_printer == NULL)
192 return -1;
193
194 decoder->packet_printer = d_params->packet_printer;
195
196
197
198
199
200 ret = ocsd_def_errlog_init(OCSD_ERR_SEV_ERROR, 1);
201 if (ret != 0)
202 return -1;
203
204
205 ret = ocsd_def_errlog_config_output(C_API_MSGLOGOUT_FLG_NONE, NULL);
206 if (ret != 0)
207 return -1;
208
209
210
211
212
213 ret = ocsd_def_errlog_set_strprint_cb(decoder->dcd_tree,
214 (void *)decoder,
215 cs_etm_decoder__print_str_cb);
216 if (ret != 0)
217 ret = -1;
218
219 return 0;
220}
221
222#ifdef CS_LOG_RAW_FRAMES
223static void
224cs_etm_decoder__init_raw_frame_logging(struct cs_etm_decoder_params *d_params,
225 struct cs_etm_decoder *decoder)
226{
227
228 if (d_params->operation == CS_ETM_OPERATION_PRINT) {
229
230
231
232 ocsd_def_errlog_init(OCSD_ERR_SEV_ERROR, 1);
233
234
235 ocsd_def_errlog_config_output(C_API_MSGLOGOUT_FLG_NONE, NULL);
236
237
238
239
240 ocsd_def_errlog_set_strprint_cb(decoder->dcd_tree,
241 (void *)decoder,
242 cs_etm_decoder__print_str_cb);
243
244
245 ocsd_dt_set_raw_frame_printer(decoder->dcd_tree,
246 CS_RAW_DEBUG_FLAGS);
247 }
248}
249#else
250static void
251cs_etm_decoder__init_raw_frame_logging(
252 struct cs_etm_decoder_params *d_params __maybe_unused,
253 struct cs_etm_decoder *decoder __maybe_unused)
254{
255}
256#endif
257
258static ocsd_datapath_resp_t
259cs_etm_decoder__do_soft_timestamp(struct cs_etm_queue *etmq,
260 struct cs_etm_packet_queue *packet_queue,
261 const uint8_t trace_chan_id)
262{
263
264 if (!packet_queue->cs_timestamp)
265 return OCSD_RESP_CONT;
266
267 packet_queue->cs_timestamp = packet_queue->next_cs_timestamp;
268
269
270 packet_queue->next_cs_timestamp += packet_queue->instr_count;
271 packet_queue->instr_count = 0;
272
273
274 cs_etm__etmq_set_traceid_queue_timestamp(etmq, trace_chan_id);
275
276 return OCSD_RESP_WAIT;
277}
278
279static ocsd_datapath_resp_t
280cs_etm_decoder__do_hard_timestamp(struct cs_etm_queue *etmq,
281 const ocsd_generic_trace_elem *elem,
282 const uint8_t trace_chan_id,
283 const ocsd_trc_index_t indx)
284{
285 struct cs_etm_packet_queue *packet_queue;
286
287
288 packet_queue = cs_etm__etmq_get_packet_queue(etmq, trace_chan_id);
289 if (!packet_queue)
290 return OCSD_RESP_FATAL_SYS_ERR;
291
292
293
294
295
296
297 if (packet_queue->cs_timestamp) {
298 packet_queue->next_cs_timestamp = elem->timestamp;
299 return OCSD_RESP_CONT;
300 }
301
302
303 if (!elem->timestamp) {
304
305
306
307
308
309 packet_queue->cs_timestamp = 0;
310 if (!cs_etm__etmq_is_timeless(etmq))
311 pr_warning_once("Zero Coresight timestamp found at Idx:%" OCSD_TRC_IDX_STR
312 ". Decoding may be improved by prepending 'Z' to your current --itrace arguments.\n",
313 indx);
314
315 } else if (packet_queue->instr_count > elem->timestamp) {
316
317
318
319
320 packet_queue->cs_timestamp = 0;
321 pr_err("Timestamp calculation underflow at Idx:%" OCSD_TRC_IDX_STR "\n", indx);
322 } else {
323
324
325
326
327
328
329
330 packet_queue->cs_timestamp = elem->timestamp - packet_queue->instr_count;
331 }
332 packet_queue->next_cs_timestamp = elem->timestamp;
333 packet_queue->instr_count = 0;
334
335
336 cs_etm__etmq_set_traceid_queue_timestamp(etmq, trace_chan_id);
337
338
339 return OCSD_RESP_WAIT;
340}
341
342static void
343cs_etm_decoder__reset_timestamp(struct cs_etm_packet_queue *packet_queue)
344{
345 packet_queue->cs_timestamp = 0;
346 packet_queue->next_cs_timestamp = 0;
347 packet_queue->instr_count = 0;
348}
349
350static ocsd_datapath_resp_t
351cs_etm_decoder__buffer_packet(struct cs_etm_packet_queue *packet_queue,
352 const u8 trace_chan_id,
353 enum cs_etm_sample_type sample_type)
354{
355 u32 et = 0;
356 int cpu;
357
358 if (packet_queue->packet_count >= CS_ETM_PACKET_MAX_BUFFER - 1)
359 return OCSD_RESP_FATAL_SYS_ERR;
360
361 if (cs_etm__get_cpu(trace_chan_id, &cpu) < 0)
362 return OCSD_RESP_FATAL_SYS_ERR;
363
364 et = packet_queue->tail;
365 et = (et + 1) & (CS_ETM_PACKET_MAX_BUFFER - 1);
366 packet_queue->tail = et;
367 packet_queue->packet_count++;
368
369 packet_queue->packet_buffer[et].sample_type = sample_type;
370 packet_queue->packet_buffer[et].isa = CS_ETM_ISA_UNKNOWN;
371 packet_queue->packet_buffer[et].cpu = cpu;
372 packet_queue->packet_buffer[et].start_addr = CS_ETM_INVAL_ADDR;
373 packet_queue->packet_buffer[et].end_addr = CS_ETM_INVAL_ADDR;
374 packet_queue->packet_buffer[et].instr_count = 0;
375 packet_queue->packet_buffer[et].last_instr_taken_branch = false;
376 packet_queue->packet_buffer[et].last_instr_size = 0;
377 packet_queue->packet_buffer[et].last_instr_type = 0;
378 packet_queue->packet_buffer[et].last_instr_subtype = 0;
379 packet_queue->packet_buffer[et].last_instr_cond = 0;
380 packet_queue->packet_buffer[et].flags = 0;
381 packet_queue->packet_buffer[et].exception_number = UINT32_MAX;
382 packet_queue->packet_buffer[et].trace_chan_id = trace_chan_id;
383
384 if (packet_queue->packet_count == CS_ETM_PACKET_MAX_BUFFER - 1)
385 return OCSD_RESP_WAIT;
386
387 return OCSD_RESP_CONT;
388}
389
390static ocsd_datapath_resp_t
391cs_etm_decoder__buffer_range(struct cs_etm_queue *etmq,
392 struct cs_etm_packet_queue *packet_queue,
393 const ocsd_generic_trace_elem *elem,
394 const uint8_t trace_chan_id)
395{
396 int ret = 0;
397 struct cs_etm_packet *packet;
398
399 ret = cs_etm_decoder__buffer_packet(packet_queue, trace_chan_id,
400 CS_ETM_RANGE);
401 if (ret != OCSD_RESP_CONT && ret != OCSD_RESP_WAIT)
402 return ret;
403
404 packet = &packet_queue->packet_buffer[packet_queue->tail];
405
406 switch (elem->isa) {
407 case ocsd_isa_aarch64:
408 packet->isa = CS_ETM_ISA_A64;
409 break;
410 case ocsd_isa_arm:
411 packet->isa = CS_ETM_ISA_A32;
412 break;
413 case ocsd_isa_thumb2:
414 packet->isa = CS_ETM_ISA_T32;
415 break;
416 case ocsd_isa_tee:
417 case ocsd_isa_jazelle:
418 case ocsd_isa_custom:
419 case ocsd_isa_unknown:
420 default:
421 packet->isa = CS_ETM_ISA_UNKNOWN;
422 }
423
424 packet->start_addr = elem->st_addr;
425 packet->end_addr = elem->en_addr;
426 packet->instr_count = elem->num_instr_range;
427 packet->last_instr_type = elem->last_i_type;
428 packet->last_instr_subtype = elem->last_i_subtype;
429 packet->last_instr_cond = elem->last_instr_cond;
430
431 if (elem->last_i_type == OCSD_INSTR_BR || elem->last_i_type == OCSD_INSTR_BR_INDIRECT)
432 packet->last_instr_taken_branch = elem->last_instr_exec;
433 else
434 packet->last_instr_taken_branch = false;
435
436 packet->last_instr_size = elem->last_instr_sz;
437
438
439 if (cs_etm__etmq_is_timeless(etmq))
440 goto out;
441
442
443
444
445
446
447 if (ret == OCSD_RESP_WAIT)
448 goto out;
449
450 packet_queue->instr_count += elem->num_instr_range;
451
452 ret = cs_etm_decoder__do_soft_timestamp(etmq, packet_queue,
453 trace_chan_id);
454out:
455 return ret;
456}
457
458static ocsd_datapath_resp_t
459cs_etm_decoder__buffer_discontinuity(struct cs_etm_packet_queue *queue,
460 const uint8_t trace_chan_id)
461{
462
463
464
465
466 cs_etm_decoder__reset_timestamp(queue);
467 return cs_etm_decoder__buffer_packet(queue, trace_chan_id,
468 CS_ETM_DISCONTINUITY);
469}
470
471static ocsd_datapath_resp_t
472cs_etm_decoder__buffer_exception(struct cs_etm_packet_queue *queue,
473 const ocsd_generic_trace_elem *elem,
474 const uint8_t trace_chan_id)
475{ int ret = 0;
476 struct cs_etm_packet *packet;
477
478 ret = cs_etm_decoder__buffer_packet(queue, trace_chan_id,
479 CS_ETM_EXCEPTION);
480 if (ret != OCSD_RESP_CONT && ret != OCSD_RESP_WAIT)
481 return ret;
482
483 packet = &queue->packet_buffer[queue->tail];
484 packet->exception_number = elem->exception_number;
485
486 return ret;
487}
488
489static ocsd_datapath_resp_t
490cs_etm_decoder__buffer_exception_ret(struct cs_etm_packet_queue *queue,
491 const uint8_t trace_chan_id)
492{
493 return cs_etm_decoder__buffer_packet(queue, trace_chan_id,
494 CS_ETM_EXCEPTION_RET);
495}
496
497static ocsd_datapath_resp_t
498cs_etm_decoder__set_tid(struct cs_etm_queue *etmq,
499 struct cs_etm_packet_queue *packet_queue,
500 const ocsd_generic_trace_elem *elem,
501 const uint8_t trace_chan_id)
502{
503 pid_t tid = -1;
504 static u64 pid_fmt;
505 int ret;
506
507
508
509
510
511
512 if (!pid_fmt) {
513 ret = cs_etm__get_pid_fmt(trace_chan_id, &pid_fmt);
514 if (ret)
515 return OCSD_RESP_FATAL_SYS_ERR;
516 }
517
518
519
520
521
522
523 switch (pid_fmt) {
524 case BIT(ETM_OPT_CTXTID):
525 if (elem->context.ctxt_id_valid)
526 tid = elem->context.context_id;
527 break;
528 case BIT(ETM_OPT_CTXTID2):
529 if (elem->context.vmid_valid)
530 tid = elem->context.vmid;
531 break;
532 default:
533 break;
534 }
535
536 if (tid == -1)
537 return OCSD_RESP_CONT;
538
539 if (cs_etm__etmq_set_tid(etmq, tid, trace_chan_id))
540 return OCSD_RESP_FATAL_SYS_ERR;
541
542
543
544
545
546 cs_etm_decoder__reset_timestamp(packet_queue);
547
548 return OCSD_RESP_CONT;
549}
550
551static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer(
552 const void *context,
553 const ocsd_trc_index_t indx,
554 const u8 trace_chan_id __maybe_unused,
555 const ocsd_generic_trace_elem *elem)
556{
557 ocsd_datapath_resp_t resp = OCSD_RESP_CONT;
558 struct cs_etm_decoder *decoder = (struct cs_etm_decoder *) context;
559 struct cs_etm_queue *etmq = decoder->data;
560 struct cs_etm_packet_queue *packet_queue;
561
562
563 packet_queue = cs_etm__etmq_get_packet_queue(etmq, trace_chan_id);
564 if (!packet_queue)
565 return OCSD_RESP_FATAL_SYS_ERR;
566
567 switch (elem->elem_type) {
568 case OCSD_GEN_TRC_ELEM_UNKNOWN:
569 break;
570 case OCSD_GEN_TRC_ELEM_EO_TRACE:
571 case OCSD_GEN_TRC_ELEM_NO_SYNC:
572 case OCSD_GEN_TRC_ELEM_TRACE_ON:
573 resp = cs_etm_decoder__buffer_discontinuity(packet_queue,
574 trace_chan_id);
575 break;
576 case OCSD_GEN_TRC_ELEM_INSTR_RANGE:
577 resp = cs_etm_decoder__buffer_range(etmq, packet_queue, elem,
578 trace_chan_id);
579 break;
580 case OCSD_GEN_TRC_ELEM_EXCEPTION:
581 resp = cs_etm_decoder__buffer_exception(packet_queue, elem,
582 trace_chan_id);
583 break;
584 case OCSD_GEN_TRC_ELEM_EXCEPTION_RET:
585 resp = cs_etm_decoder__buffer_exception_ret(packet_queue,
586 trace_chan_id);
587 break;
588 case OCSD_GEN_TRC_ELEM_TIMESTAMP:
589 resp = cs_etm_decoder__do_hard_timestamp(etmq, elem,
590 trace_chan_id,
591 indx);
592 break;
593 case OCSD_GEN_TRC_ELEM_PE_CONTEXT:
594 resp = cs_etm_decoder__set_tid(etmq, packet_queue,
595 elem, trace_chan_id);
596 break;
597
598 case OCSD_GEN_TRC_ELEM_I_RANGE_NOPATH:
599 case OCSD_GEN_TRC_ELEM_ADDR_NACC:
600 case OCSD_GEN_TRC_ELEM_CYCLE_COUNT:
601 case OCSD_GEN_TRC_ELEM_ADDR_UNKNOWN:
602 case OCSD_GEN_TRC_ELEM_EVENT:
603 case OCSD_GEN_TRC_ELEM_SWTRACE:
604 case OCSD_GEN_TRC_ELEM_CUSTOM:
605 case OCSD_GEN_TRC_ELEM_SYNC_MARKER:
606 case OCSD_GEN_TRC_ELEM_MEMTRANS:
607 default:
608 break;
609 }
610
611 return resp;
612}
613
614static int
615cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
616 struct cs_etm_trace_params *t_params,
617 struct cs_etm_decoder *decoder)
618{
619 ocsd_etmv3_cfg config_etmv3;
620 ocsd_etmv4_cfg trace_config_etmv4;
621 ocsd_ete_cfg trace_config_ete;
622 void *trace_config;
623 u8 csid;
624
625 switch (t_params->protocol) {
626 case CS_ETM_PROTO_ETMV3:
627 case CS_ETM_PROTO_PTM:
628 cs_etm_decoder__gen_etmv3_config(t_params, &config_etmv3);
629 decoder->decoder_name = (t_params->protocol == CS_ETM_PROTO_ETMV3) ?
630 OCSD_BUILTIN_DCD_ETMV3 :
631 OCSD_BUILTIN_DCD_PTM;
632 trace_config = &config_etmv3;
633 break;
634 case CS_ETM_PROTO_ETMV4i:
635 cs_etm_decoder__gen_etmv4_config(t_params, &trace_config_etmv4);
636 decoder->decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
637 trace_config = &trace_config_etmv4;
638 break;
639 case CS_ETM_PROTO_ETE:
640 cs_etm_decoder__gen_ete_config(t_params, &trace_config_ete);
641 decoder->decoder_name = OCSD_BUILTIN_DCD_ETE;
642 trace_config = &trace_config_ete;
643 break;
644 default:
645 return -1;
646 }
647
648 if (d_params->operation == CS_ETM_OPERATION_DECODE) {
649 if (ocsd_dt_create_decoder(decoder->dcd_tree,
650 decoder->decoder_name,
651 OCSD_CREATE_FLG_FULL_DECODER,
652 trace_config, &csid))
653 return -1;
654
655 if (ocsd_dt_set_gen_elem_outfn(decoder->dcd_tree,
656 cs_etm_decoder__gen_trace_elem_printer,
657 decoder))
658 return -1;
659
660 return 0;
661 } else if (d_params->operation == CS_ETM_OPERATION_PRINT) {
662 if (ocsd_dt_create_decoder(decoder->dcd_tree, decoder->decoder_name,
663 OCSD_CREATE_FLG_PACKET_PROC,
664 trace_config, &csid))
665 return -1;
666
667 if (ocsd_dt_set_pkt_protocol_printer(decoder->dcd_tree, csid, 0))
668 return -1;
669
670 return 0;
671 }
672
673 return -1;
674}
675
676struct cs_etm_decoder *
677cs_etm_decoder__new(int decoders, struct cs_etm_decoder_params *d_params,
678 struct cs_etm_trace_params t_params[])
679{
680 struct cs_etm_decoder *decoder;
681 ocsd_dcd_tree_src_t format;
682 u32 flags;
683 int i, ret;
684
685 if ((!t_params) || (!d_params))
686 return NULL;
687
688 decoder = zalloc(sizeof(*decoder));
689
690 if (!decoder)
691 return NULL;
692
693 decoder->data = d_params->data;
694 decoder->prev_return = OCSD_RESP_CONT;
695 format = (d_params->formatted ? OCSD_TRC_SRC_FRAME_FORMATTED :
696 OCSD_TRC_SRC_SINGLE);
697 flags = 0;
698 flags |= (d_params->fsyncs ? OCSD_DFRMTR_HAS_FSYNCS : 0);
699 flags |= (d_params->hsyncs ? OCSD_DFRMTR_HAS_HSYNCS : 0);
700 flags |= (d_params->frame_aligned ? OCSD_DFRMTR_FRAME_MEM_ALIGN : 0);
701
702
703
704
705
706 flags |= OCSD_DFRMTR_RESET_ON_4X_FSYNC;
707
708
709 decoder->dcd_tree = ocsd_create_dcd_tree(format, flags);
710
711 if (decoder->dcd_tree == 0)
712 goto err_free_decoder;
713
714
715 ret = cs_etm_decoder__init_def_logger_printing(d_params, decoder);
716 if (ret != 0)
717 goto err_free_decoder;
718
719
720 cs_etm_decoder__init_raw_frame_logging(d_params, decoder);
721
722 for (i = 0; i < decoders; i++) {
723 ret = cs_etm_decoder__create_etm_decoder(d_params,
724 &t_params[i],
725 decoder);
726 if (ret != 0)
727 goto err_free_decoder;
728 }
729
730 return decoder;
731
732err_free_decoder:
733 cs_etm_decoder__free(decoder);
734 return NULL;
735}
736
737int cs_etm_decoder__process_data_block(struct cs_etm_decoder *decoder,
738 u64 indx, const u8 *buf,
739 size_t len, size_t *consumed)
740{
741 int ret = 0;
742 ocsd_datapath_resp_t cur = OCSD_RESP_CONT;
743 ocsd_datapath_resp_t prev_return = decoder->prev_return;
744 size_t processed = 0;
745 u32 count;
746
747 while (processed < len) {
748 if (OCSD_DATA_RESP_IS_WAIT(prev_return)) {
749 cur = ocsd_dt_process_data(decoder->dcd_tree,
750 OCSD_OP_FLUSH,
751 0,
752 0,
753 NULL,
754 NULL);
755 } else if (OCSD_DATA_RESP_IS_CONT(prev_return)) {
756 cur = ocsd_dt_process_data(decoder->dcd_tree,
757 OCSD_OP_DATA,
758 indx + processed,
759 len - processed,
760 &buf[processed],
761 &count);
762 processed += count;
763 } else {
764 ret = -EINVAL;
765 break;
766 }
767
768
769
770
771
772
773 if (OCSD_DATA_RESP_IS_WAIT(cur))
774 break;
775
776 prev_return = cur;
777 }
778
779 decoder->prev_return = cur;
780 *consumed = processed;
781
782 return ret;
783}
784
785void cs_etm_decoder__free(struct cs_etm_decoder *decoder)
786{
787 if (!decoder)
788 return;
789
790 ocsd_destroy_dcd_tree(decoder->dcd_tree);
791 decoder->dcd_tree = NULL;
792 free(decoder);
793}
794
795const char *cs_etm_decoder__get_name(struct cs_etm_decoder *decoder)
796{
797 return decoder->decoder_name;
798}
799