1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2022 Intel Corporation. All rights reserved. 4 5 #include <linux/debugfs.h> 6 #include <linux/sched/signal.h> 7 #include <sound/sof/ipc4/header.h> 8 #include "sof-priv.h" 9 #include "ipc4-priv.h" 10 11 /* 12 * debug info window is organized in 16 (equal sized) pages: 13 * 14 * ------------------------ 15 * | Page0 - descriptors | 16 * ------------------------ 17 * | Page1 - slot0 | 18 * ------------------------ 19 * | Page2 - slot1 | 20 * ------------------------ 21 * | ... | 22 * ------------------------ 23 * | Page14 - slot13 | 24 * ------------------------ 25 * | Page15 - slot14 | 26 * ------------------------ 27 * 28 * The slot size == page size 29 * 30 * The first page contains descriptors for the remaining 15 cores 31 * The slot descriptor is: 32 * u32 res_id; 33 * u32 type; 34 * u32 vma; 35 * 36 * Log buffer slots have the following layout: 37 * u32 host_read_ptr; 38 * u32 dsp_write_ptr; 39 * u8 buffer[]; 40 * 41 * The two pointers are offsets within the buffer. 42 */ 43 44 #define SOF_MTRACE_DESCRIPTOR_SIZE 12 /* 3 x u32 */ 45 46 #define FW_EPOCH_DELTA 11644473600LL 47 48 #define INVALID_SLOT_OFFSET 0xffffffff 49 #define MAX_ALLOWED_LIBRARIES 16 50 #define MAX_MTRACE_SLOTS 15 51 52 #define SOF_MTRACE_PAGE_SIZE 0x1000 53 #define SOF_MTRACE_SLOT_SIZE SOF_MTRACE_PAGE_SIZE 54 55 /* debug log slot types */ 56 #define SOF_MTRACE_SLOT_UNUSED 0x00000000 57 #define SOF_MTRACE_SLOT_CRITICAL_LOG 0x54524300 /* byte 0: core ID */ 58 #define SOF_MTRACE_SLOT_DEBUG_LOG 0x474f4c00 /* byte 0: core ID */ 59 #define SOF_MTRACE_SLOT_GDB_STUB 0x42444700 60 #define SOF_MTRACE_SLOT_TELEMETRY 0x4c455400 61 #define SOF_MTRACE_SLOT_BROKEN 0x44414544 62 /* for debug and critical types */ 63 #define SOF_MTRACE_SLOT_CORE_MASK GENMASK(7, 0) 64 #define SOF_MTRACE_SLOT_TYPE_MASK GENMASK(31, 8) 65 66 #define DEFAULT_AGING_TIMER_PERIOD_MS 0x100 67 #define DEFAULT_FIFO_FULL_TIMER_PERIOD_MS 0x1000 68 69 /* ipc4 log level and source definitions for logs_priorities_mask */ 70 #define SOF_MTRACE_LOG_LEVEL_CRITICAL BIT(0) 71 #define SOF_MTRACE_LOG_LEVEL_ERROR BIT(1) 72 #define SOF_MTRACE_LOG_LEVEL_WARNING BIT(2) 73 #define SOF_MTRACE_LOG_LEVEL_INFO BIT(3) 74 #define SOF_MTRACE_LOG_LEVEL_VERBOSE BIT(4) 75 #define SOF_MTRACE_LOG_SOURCE_INFRA BIT(5) /* log source 0 */ 76 #define SOF_MTRACE_LOG_SOURCE_HAL BIT(6) 77 #define SOF_MTRACE_LOG_SOURCE_MODULE BIT(7) 78 #define SOF_MTRACE_LOG_SOURCE_AUDIO BIT(8) 79 #define SOF_MTRACE_LOG_SOURCE_SCHEDULER BIT(9) 80 #define SOF_MTRACE_LOG_SOURCE_ULP_INFRA BIT(10) 81 #define SOF_MTRACE_LOG_SOURCE_ULP_MODULE BIT(11) 82 #define SOF_MTRACE_LOG_SOURCE_VISION BIT(12) /* log source 7 */ 83 #define DEFAULT_LOGS_PRIORITIES_MASK (SOF_MTRACE_LOG_LEVEL_CRITICAL | \ 84 SOF_MTRACE_LOG_LEVEL_ERROR | \ 85 SOF_MTRACE_LOG_LEVEL_WARNING | \ 86 SOF_MTRACE_LOG_LEVEL_INFO | \ 87 SOF_MTRACE_LOG_SOURCE_INFRA | \ 88 SOF_MTRACE_LOG_SOURCE_HAL | \ 89 SOF_MTRACE_LOG_SOURCE_MODULE | \ 90 SOF_MTRACE_LOG_SOURCE_AUDIO) 91 92 struct sof_log_state_info { 93 u32 aging_timer_period; 94 u32 fifo_full_timer_period; 95 u32 enable; 96 u32 logs_priorities_mask[MAX_ALLOWED_LIBRARIES]; 97 } __packed; 98 99 enum sof_mtrace_state { 100 SOF_MTRACE_DISABLED, 101 SOF_MTRACE_INITIALIZING, 102 SOF_MTRACE_ENABLED, 103 }; 104 105 struct sof_mtrace_core_data { 106 struct snd_sof_dev *sdev; 107 108 int id; 109 u32 slot_offset; 110 void *log_buffer; 111 struct mutex buffer_lock; /* for log_buffer alloc/free */ 112 u32 host_read_ptr; 113 u32 dsp_write_ptr; 114 /* pos update IPC arrived before the slot offset is known, queried */ 115 bool delayed_pos_update; 116 wait_queue_head_t trace_sleep; 117 }; 118 119 struct sof_mtrace_priv { 120 struct snd_sof_dev *sdev; 121 enum sof_mtrace_state mtrace_state; 122 struct sof_log_state_info state_info; 123 124 struct sof_mtrace_core_data cores[]; 125 }; 126 127 static int sof_ipc4_mtrace_dfs_open(struct inode *inode, struct file *file) 128 { 129 struct sof_mtrace_core_data *core_data = inode->i_private; 130 int ret; 131 132 mutex_lock(&core_data->buffer_lock); 133 134 if (core_data->log_buffer) { 135 ret = -EBUSY; 136 goto out; 137 } 138 139 ret = debugfs_file_get(file->f_path.dentry); 140 if (unlikely(ret)) 141 goto out; 142 143 core_data->log_buffer = kmalloc(SOF_MTRACE_SLOT_SIZE, GFP_KERNEL); 144 if (!core_data->log_buffer) { 145 debugfs_file_put(file->f_path.dentry); 146 ret = -ENOMEM; 147 goto out; 148 } 149 150 ret = simple_open(inode, file); 151 if (ret) { 152 kfree(core_data->log_buffer); 153 debugfs_file_put(file->f_path.dentry); 154 } 155 156 out: 157 mutex_unlock(&core_data->buffer_lock); 158 159 return ret; 160 } 161 162 static bool sof_wait_mtrace_avail(struct sof_mtrace_core_data *core_data) 163 { 164 wait_queue_entry_t wait; 165 166 /* data immediately available */ 167 if (core_data->host_read_ptr != core_data->dsp_write_ptr) 168 return true; 169 170 /* wait for available trace data from FW */ 171 init_waitqueue_entry(&wait, current); 172 set_current_state(TASK_INTERRUPTIBLE); 173 add_wait_queue(&core_data->trace_sleep, &wait); 174 175 if (!signal_pending(current)) { 176 /* set timeout to max value, no error code */ 177 schedule_timeout(MAX_SCHEDULE_TIMEOUT); 178 } 179 remove_wait_queue(&core_data->trace_sleep, &wait); 180 181 if (core_data->host_read_ptr != core_data->dsp_write_ptr) 182 return true; 183 184 return false; 185 } 186 187 static ssize_t sof_ipc4_mtrace_dfs_read(struct file *file, char __user *buffer, 188 size_t count, loff_t *ppos) 189 { 190 struct sof_mtrace_core_data *core_data = file->private_data; 191 u32 log_buffer_offset, log_buffer_size, read_ptr, write_ptr; 192 struct snd_sof_dev *sdev = core_data->sdev; 193 struct sof_mtrace_priv *priv = sdev->fw_trace_data; 194 void *log_buffer = core_data->log_buffer; 195 loff_t lpos = *ppos; 196 u32 avail; 197 int ret; 198 199 /* check pos and count */ 200 if (lpos < 0) 201 return -EINVAL; 202 if (!count || count < sizeof(avail)) 203 return 0; 204 205 /* get available count based on current host offset */ 206 if (!sof_wait_mtrace_avail(core_data)) { 207 /* No data available */ 208 avail = 0; 209 if (copy_to_user(buffer, &avail, sizeof(avail))) 210 return -EFAULT; 211 212 return 0; 213 } 214 215 if (core_data->slot_offset == INVALID_SLOT_OFFSET) 216 return 0; 217 218 /* The log data buffer starts after the two pointer in the slot */ 219 log_buffer_offset = core_data->slot_offset + (sizeof(u32) * 2); 220 /* The log data size excludes the pointers */ 221 log_buffer_size = SOF_MTRACE_SLOT_SIZE - (sizeof(u32) * 2); 222 223 read_ptr = core_data->host_read_ptr; 224 write_ptr = core_data->dsp_write_ptr; 225 226 if (read_ptr < write_ptr) 227 avail = write_ptr - read_ptr; 228 else 229 avail = log_buffer_size - read_ptr + write_ptr; 230 231 if (!avail) 232 return 0; 233 234 if (avail > log_buffer_size) 235 avail = log_buffer_size; 236 237 /* Need space for the initial u32 of the avail */ 238 if (avail > count - sizeof(avail)) 239 avail = count - sizeof(avail); 240 241 if (sof_debug_check_flag(SOF_DBG_PRINT_DMA_POSITION_UPDATE_LOGS)) 242 dev_dbg(sdev->dev, 243 "core%d, host read: %#x, dsp write: %#x, avail: %#x\n", 244 core_data->id, read_ptr, write_ptr, avail); 245 246 if (read_ptr < write_ptr) { 247 /* Read data between read pointer and write pointer */ 248 sof_mailbox_read(sdev, log_buffer_offset + read_ptr, log_buffer, avail); 249 } else { 250 /* read from read pointer to end of the slot */ 251 sof_mailbox_read(sdev, log_buffer_offset + read_ptr, log_buffer, 252 avail - write_ptr); 253 /* read from slot start to write pointer */ 254 if (write_ptr) 255 sof_mailbox_read(sdev, log_buffer_offset, 256 (u8 *)(log_buffer) + avail - write_ptr, 257 write_ptr); 258 } 259 260 /* first write the number of bytes we have gathered */ 261 ret = copy_to_user(buffer, &avail, sizeof(avail)); 262 if (ret) 263 return -EFAULT; 264 265 /* Followed by the data itself */ 266 ret = copy_to_user(buffer + sizeof(avail), log_buffer, avail); 267 if (ret) 268 return -EFAULT; 269 270 /* Update the host_read_ptr in the slot for this core */ 271 read_ptr += avail; 272 if (read_ptr >= log_buffer_size) 273 read_ptr -= log_buffer_size; 274 sof_mailbox_write(sdev, core_data->slot_offset, &read_ptr, sizeof(read_ptr)); 275 276 /* Only update the host_read_ptr if mtrace is enabled */ 277 if (priv->mtrace_state != SOF_MTRACE_DISABLED) 278 core_data->host_read_ptr = read_ptr; 279 280 /* 281 * Ask for a new buffer from user space for the next chunk, not 282 * streaming due to the heading number of bytes value. 283 */ 284 *ppos += count; 285 286 return count; 287 } 288 289 static int sof_ipc4_mtrace_dfs_release(struct inode *inode, struct file *file) 290 { 291 struct sof_mtrace_core_data *core_data = inode->i_private; 292 293 debugfs_file_put(file->f_path.dentry); 294 295 mutex_lock(&core_data->buffer_lock); 296 kfree(core_data->log_buffer); 297 core_data->log_buffer = NULL; 298 mutex_unlock(&core_data->buffer_lock); 299 300 return 0; 301 } 302 303 static const struct file_operations sof_dfs_mtrace_fops = { 304 .open = sof_ipc4_mtrace_dfs_open, 305 .read = sof_ipc4_mtrace_dfs_read, 306 .llseek = default_llseek, 307 .release = sof_ipc4_mtrace_dfs_release, 308 309 .owner = THIS_MODULE, 310 }; 311 312 static ssize_t sof_ipc4_priority_mask_dfs_read(struct file *file, char __user *to, 313 size_t count, loff_t *ppos) 314 { 315 struct sof_mtrace_priv *priv = file->private_data; 316 int i, ret, offset, remaining; 317 char *buf; 318 319 /* 320 * one entry (14 char + new line = 15): 321 * " 0: 000001ef" 322 * 323 * 16 * 15 + 1 = 241 324 */ 325 buf = kzalloc(241, GFP_KERNEL); 326 if (!buf) 327 return -ENOMEM; 328 329 for (i = 0; i < MAX_ALLOWED_LIBRARIES; i++) { 330 offset = strlen(buf); 331 remaining = 241 - offset; 332 snprintf(buf + offset, remaining, "%2d: 0x%08x\n", i, 333 priv->state_info.logs_priorities_mask[i]); 334 } 335 336 ret = simple_read_from_buffer(to, count, ppos, buf, strlen(buf)); 337 338 kfree(buf); 339 return ret; 340 } 341 342 static ssize_t sof_ipc4_priority_mask_dfs_write(struct file *file, 343 const char __user *from, 344 size_t count, loff_t *ppos) 345 { 346 struct sof_mtrace_priv *priv = file->private_data; 347 int id, ret; 348 char *buf; 349 u32 mask; 350 351 /* 352 * To update Nth mask entry, write: 353 * "N,0x1234" or "N,1234" to the debugfs file 354 * The mask will be interpreted as hexadecimal number 355 */ 356 buf = memdup_user_nul(from, count); 357 if (IS_ERR(buf)) 358 return PTR_ERR(buf); 359 360 ret = sscanf(buf, "%d,0x%x", &id, &mask); 361 if (ret != 2) { 362 ret = sscanf(buf, "%d,%x", &id, &mask); 363 if (ret != 2) { 364 ret = -EINVAL; 365 goto out; 366 } 367 } 368 369 if (id >= MAX_ALLOWED_LIBRARIES) { 370 ret = -EINVAL; 371 goto out; 372 } 373 374 priv->state_info.logs_priorities_mask[id] = mask; 375 ret = count; 376 377 out: 378 kfree(buf); 379 return ret; 380 } 381 382 static const struct file_operations sof_dfs_priority_mask_fops = { 383 .open = simple_open, 384 .read = sof_ipc4_priority_mask_dfs_read, 385 .write = sof_ipc4_priority_mask_dfs_write, 386 .llseek = default_llseek, 387 388 .owner = THIS_MODULE, 389 }; 390 391 static int mtrace_debugfs_create(struct snd_sof_dev *sdev) 392 { 393 struct sof_mtrace_priv *priv = sdev->fw_trace_data; 394 struct dentry *dfs_root; 395 char dfs_name[100]; 396 int i; 397 398 dfs_root = debugfs_create_dir("mtrace", sdev->debugfs_root); 399 if (IS_ERR_OR_NULL(dfs_root)) 400 return 0; 401 402 /* Create files for the logging parameters */ 403 debugfs_create_u32("aging_timer_period", 0644, dfs_root, 404 &priv->state_info.aging_timer_period); 405 debugfs_create_u32("fifo_full_timer_period", 0644, dfs_root, 406 &priv->state_info.fifo_full_timer_period); 407 debugfs_create_file("logs_priorities_mask", 0644, dfs_root, priv, 408 &sof_dfs_priority_mask_fops); 409 410 /* Separate log files per core */ 411 for (i = 0; i < sdev->num_cores; i++) { 412 snprintf(dfs_name, sizeof(dfs_name), "core%d", i); 413 debugfs_create_file(dfs_name, 0444, dfs_root, &priv->cores[i], 414 &sof_dfs_mtrace_fops); 415 } 416 417 return 0; 418 } 419 420 static int ipc4_mtrace_enable(struct snd_sof_dev *sdev) 421 { 422 struct sof_mtrace_priv *priv = sdev->fw_trace_data; 423 const struct sof_ipc_ops *iops = sdev->ipc->ops; 424 struct sof_ipc4_msg msg; 425 u64 system_time; 426 ktime_t kt; 427 int ret; 428 429 if (priv->mtrace_state != SOF_MTRACE_DISABLED) 430 return 0; 431 432 msg.primary = SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG); 433 msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST); 434 msg.primary |= SOF_IPC4_MOD_ID(SOF_IPC4_MOD_INIT_BASEFW_MOD_ID); 435 msg.primary |= SOF_IPC4_MOD_INSTANCE(SOF_IPC4_MOD_INIT_BASEFW_INSTANCE_ID); 436 msg.extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_FW_PARAM_SYSTEM_TIME); 437 438 /* The system time is in usec, UTC, epoch is 1601-01-01 00:00:00 */ 439 kt = ktime_add_us(ktime_get_real(), FW_EPOCH_DELTA * USEC_PER_SEC); 440 system_time = ktime_to_us(kt); 441 msg.data_size = sizeof(system_time); 442 msg.data_ptr = &system_time; 443 ret = iops->set_get_data(sdev, &msg, msg.data_size, true); 444 if (ret) 445 return ret; 446 447 msg.extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_FW_PARAM_ENABLE_LOGS); 448 449 priv->state_info.enable = 1; 450 451 msg.data_size = sizeof(priv->state_info); 452 msg.data_ptr = &priv->state_info; 453 454 priv->mtrace_state = SOF_MTRACE_INITIALIZING; 455 ret = iops->set_get_data(sdev, &msg, msg.data_size, true); 456 if (ret) { 457 priv->mtrace_state = SOF_MTRACE_DISABLED; 458 return ret; 459 } 460 461 priv->mtrace_state = SOF_MTRACE_ENABLED; 462 463 return 0; 464 } 465 466 static void ipc4_mtrace_disable(struct snd_sof_dev *sdev) 467 { 468 struct sof_mtrace_priv *priv = sdev->fw_trace_data; 469 const struct sof_ipc_ops *iops = sdev->ipc->ops; 470 struct sof_ipc4_msg msg; 471 int i; 472 473 if (priv->mtrace_state == SOF_MTRACE_DISABLED) 474 return; 475 476 msg.primary = SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG); 477 msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST); 478 msg.primary |= SOF_IPC4_MOD_ID(SOF_IPC4_MOD_INIT_BASEFW_MOD_ID); 479 msg.primary |= SOF_IPC4_MOD_INSTANCE(SOF_IPC4_MOD_INIT_BASEFW_INSTANCE_ID); 480 msg.extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_FW_PARAM_ENABLE_LOGS); 481 482 priv->state_info.enable = 0; 483 484 msg.data_size = sizeof(priv->state_info); 485 msg.data_ptr = &priv->state_info; 486 iops->set_get_data(sdev, &msg, msg.data_size, true); 487 488 priv->mtrace_state = SOF_MTRACE_DISABLED; 489 490 for (i = 0; i < sdev->num_cores; i++) { 491 struct sof_mtrace_core_data *core_data = &priv->cores[i]; 492 493 core_data->host_read_ptr = 0; 494 core_data->dsp_write_ptr = 0; 495 wake_up(&core_data->trace_sleep); 496 } 497 } 498 499 /* 500 * Each DSP core logs to a dedicated slot. 501 * Parse the slot descriptors at debug_box offset to find the debug log slots 502 * and map them to cores. 503 * There are 15 slots and therefore 15 descriptors to check (MAX_MTRACE_SLOTS) 504 */ 505 static void sof_mtrace_find_core_slots(struct snd_sof_dev *sdev) 506 { 507 struct sof_mtrace_priv *priv = sdev->fw_trace_data; 508 struct sof_mtrace_core_data *core_data; 509 u32 slot_desc_type_offset, type, core; 510 int i; 511 512 for (i = 0; i < MAX_MTRACE_SLOTS; i++) { 513 /* The type is the second u32 in the slot descriptor */ 514 slot_desc_type_offset = sdev->debug_box.offset; 515 slot_desc_type_offset += SOF_MTRACE_DESCRIPTOR_SIZE * i + sizeof(u32); 516 sof_mailbox_read(sdev, slot_desc_type_offset, &type, sizeof(type)); 517 518 if ((type & SOF_MTRACE_SLOT_TYPE_MASK) == SOF_MTRACE_SLOT_DEBUG_LOG) { 519 core = type & SOF_MTRACE_SLOT_CORE_MASK; 520 521 if (core >= sdev->num_cores) { 522 dev_dbg(sdev->dev, "core%u is invalid for slot%d\n", 523 core, i); 524 continue; 525 } 526 527 core_data = &priv->cores[core]; 528 /* 529 * The area reserved for descriptors have the same size 530 * as a slot. 531 * In other words: slot0 starts at 532 * debug_box + SOF_MTRACE_SLOT_SIZE offset 533 */ 534 core_data->slot_offset = sdev->debug_box.offset; 535 core_data->slot_offset += SOF_MTRACE_SLOT_SIZE * (i + 1); 536 dev_dbg(sdev->dev, "slot%d is used for core%u\n", i, core); 537 if (core_data->delayed_pos_update) { 538 sof_ipc4_mtrace_update_pos(sdev, core); 539 core_data->delayed_pos_update = false; 540 } 541 } else if (type) { 542 dev_dbg(sdev->dev, "slot%d is not a log slot (%#x)\n", i, type); 543 } 544 } 545 } 546 547 static int ipc4_mtrace_init(struct snd_sof_dev *sdev) 548 { 549 struct sof_ipc4_fw_data *ipc4_data = sdev->private; 550 struct sof_mtrace_priv *priv; 551 int i, ret; 552 553 if (sdev->fw_trace_data) { 554 dev_err(sdev->dev, "fw_trace_data has been already allocated\n"); 555 return -EBUSY; 556 } 557 558 if (!ipc4_data->mtrace_log_bytes || 559 ipc4_data->mtrace_type != SOF_IPC4_MTRACE_INTEL_CAVS_2) { 560 sdev->fw_trace_is_supported = false; 561 return 0; 562 } 563 564 priv = devm_kzalloc(sdev->dev, struct_size(priv, cores, sdev->num_cores), 565 GFP_KERNEL); 566 if (!priv) 567 return -ENOMEM; 568 569 sdev->fw_trace_data = priv; 570 571 /* Set initial values for mtrace parameters */ 572 priv->state_info.aging_timer_period = DEFAULT_AGING_TIMER_PERIOD_MS; 573 priv->state_info.fifo_full_timer_period = DEFAULT_FIFO_FULL_TIMER_PERIOD_MS; 574 /* Only enable basefw logs initially (index 0 is always basefw) */ 575 priv->state_info.logs_priorities_mask[0] = DEFAULT_LOGS_PRIORITIES_MASK; 576 577 for (i = 0; i < sdev->num_cores; i++) { 578 struct sof_mtrace_core_data *core_data = &priv->cores[i]; 579 580 init_waitqueue_head(&core_data->trace_sleep); 581 mutex_init(&core_data->buffer_lock); 582 core_data->sdev = sdev; 583 core_data->id = i; 584 } 585 586 ret = ipc4_mtrace_enable(sdev); 587 if (ret) { 588 /* 589 * Mark firmware tracing as not supported and return 0 to not 590 * block the whole audio stack 591 */ 592 sdev->fw_trace_is_supported = false; 593 dev_dbg(sdev->dev, "initialization failed, fw tracing is disabled\n"); 594 return 0; 595 } 596 597 sof_mtrace_find_core_slots(sdev); 598 599 ret = mtrace_debugfs_create(sdev); 600 if (ret) 601 ipc4_mtrace_disable(sdev); 602 603 return ret; 604 } 605 606 static void ipc4_mtrace_free(struct snd_sof_dev *sdev) 607 { 608 ipc4_mtrace_disable(sdev); 609 } 610 611 int sof_ipc4_mtrace_update_pos(struct snd_sof_dev *sdev, int core) 612 { 613 struct sof_mtrace_priv *priv = sdev->fw_trace_data; 614 struct sof_mtrace_core_data *core_data; 615 616 if (!sdev->fw_trace_is_supported || 617 priv->mtrace_state == SOF_MTRACE_DISABLED) 618 return 0; 619 620 if (core >= sdev->num_cores) 621 return -EINVAL; 622 623 core_data = &priv->cores[core]; 624 625 if (core_data->slot_offset == INVALID_SLOT_OFFSET) { 626 core_data->delayed_pos_update = true; 627 return 0; 628 } 629 630 /* Read out the dsp_write_ptr from the slot for this core */ 631 sof_mailbox_read(sdev, core_data->slot_offset + sizeof(u32), 632 &core_data->dsp_write_ptr, 4); 633 core_data->dsp_write_ptr -= core_data->dsp_write_ptr % 4; 634 635 if (sof_debug_check_flag(SOF_DBG_PRINT_DMA_POSITION_UPDATE_LOGS)) 636 dev_dbg(sdev->dev, "core%d, host read: %#x, dsp write: %#x", 637 core, core_data->host_read_ptr, core_data->dsp_write_ptr); 638 639 wake_up(&core_data->trace_sleep); 640 641 return 0; 642 } 643 644 static int ipc4_mtrace_resume(struct snd_sof_dev *sdev) 645 { 646 return ipc4_mtrace_enable(sdev); 647 } 648 649 static void ipc4_mtrace_suspend(struct snd_sof_dev *sdev, pm_message_t pm_state) 650 { 651 ipc4_mtrace_disable(sdev); 652 } 653 654 const struct sof_ipc_fw_tracing_ops ipc4_mtrace_ops = { 655 .init = ipc4_mtrace_init, 656 .free = ipc4_mtrace_free, 657 .suspend = ipc4_mtrace_suspend, 658 .resume = ipc4_mtrace_resume, 659 }; 660