Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 1040 insertions, 0 deletions

diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c
new file mode 100644
index 000000000..e77f73390
--- /dev/null
+++ b/sound/soc/sof/ipc4.c
@@ -0,0 +1,1040 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license.  When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2022 Intel Corporation
+//
+// Authors: Rander Wang <rander.wang@linux.intel.com>
+//	    Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
+//
+#include <linux/firmware.h>
+#include <sound/sof/header.h>
+#include <sound/sof/ipc4/header.h>
+#include "sof-priv.h"
+#include "sof-audio.h"
+#include "ipc4-fw-reg.h"
+#include "ipc4-priv.h"
+#include "ipc4-topology.h"
+#include "ipc4-telemetry.h"
+#include "ops.h"
+
+static const struct sof_ipc4_fw_status {
+	int status;
+	char *msg;
+} ipc4_status[] = {
+	{0, "The operation was successful"},
+	{1, "Invalid parameter specified"},
+	{2, "Unknown message type specified"},
+	{3, "Not enough space in the IPC reply buffer to complete the request"},
+	{4, "The system or resource is busy"},
+	{5, "Replaced ADSP IPC PENDING (unused)"},
+	{6, "Unknown error while processing the request"},
+	{7, "Unsupported operation requested"},
+	{8, "Reserved (ADSP_STAGE_UNINITIALIZED removed)"},
+	{9, "Specified resource not found"},
+	{10, "A resource's ID requested to be created is already assigned"},
+	{11, "Reserved (ADSP_IPC_OUT_OF_MIPS removed)"},
+	{12, "Required resource is in invalid state"},
+	{13, "Requested power transition failed to complete"},
+	{14, "Manifest of the library being loaded is invalid"},
+	{15, "Requested service or data is unavailable on the target platform"},
+	{42, "Library target address is out of storage memory range"},
+	{43, "Reserved"},
+	{44, "Image verification by CSE failed"},
+	{100, "General module management error"},
+	{101, "Module loading failed"},
+	{102, "Integrity check of the loaded module content failed"},
+	{103, "Attempt to unload code of the module in use"},
+	{104, "Other failure of module instance initialization request"},
+	{105, "Reserved (ADSP_IPC_OUT_OF_MIPS removed)"},
+	{106, "Reserved (ADSP_IPC_CONFIG_GET_ERROR removed)"},
+	{107, "Reserved (ADSP_IPC_CONFIG_SET_ERROR removed)"},
+	{108, "Reserved (ADSP_IPC_LARGE_CONFIG_GET_ERROR removed)"},
+	{109, "Reserved (ADSP_IPC_LARGE_CONFIG_SET_ERROR removed)"},
+	{110, "Invalid (out of range) module ID provided"},
+	{111, "Invalid module instance ID provided"},
+	{112, "Invalid queue (pin) ID provided"},
+	{113, "Invalid destination queue (pin) ID provided"},
+	{114, "Reserved (ADSP_IPC_BIND_UNBIND_DST_SINK_UNSUPPORTED removed)"},
+	{115, "Reserved (ADSP_IPC_UNLOAD_INST_EXISTS removed)"},
+	{116, "Invalid target code ID provided"},
+	{117, "Injection DMA buffer is too small for probing the input pin"},
+	{118, "Extraction DMA buffer is too small for probing the output pin"},
+	{120, "Invalid ID of configuration item provided in TLV list"},
+	{121, "Invalid length of configuration item provided in TLV list"},
+	{122, "Invalid structure of configuration item provided"},
+	{140, "Initialization of DMA Gateway failed"},
+	{141, "Invalid ID of gateway provided"},
+	{142, "Setting state of DMA Gateway failed"},
+	{143, "DMA_CONTROL message targeting gateway not allocated yet"},
+	{150, "Attempt to configure SCLK while I2S port is running"},
+	{151, "Attempt to configure MCLK while I2S port is running"},
+	{152, "Attempt to stop SCLK that is not running"},
+	{153, "Attempt to stop MCLK that is not running"},
+	{160, "Reserved (ADSP_IPC_PIPELINE_NOT_INITIALIZED removed)"},
+	{161, "Reserved (ADSP_IPC_PIPELINE_NOT_EXIST removed)"},
+	{162, "Reserved (ADSP_IPC_PIPELINE_SAVE_FAILED removed)"},
+	{163, "Reserved (ADSP_IPC_PIPELINE_RESTORE_FAILED removed)"},
+	{165, "Reserved (ADSP_IPC_PIPELINE_ALREADY_EXISTS removed)"},
+};
+
+typedef void (*ipc4_notification_handler)(struct snd_sof_dev *sdev,
+					  struct sof_ipc4_msg *msg);
+
+static int sof_ipc4_check_reply_status(struct snd_sof_dev *sdev, u32 status)
+{
+	int i, ret;
+
+	status &= SOF_IPC4_REPLY_STATUS;
+
+	if (!status)
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(ipc4_status); i++) {
+		if (ipc4_status[i].status == status) {
+			dev_err(sdev->dev, "FW reported error: %u - %s\n",
+				status, ipc4_status[i].msg);
+			goto to_errno;
+		}
+	}
+
+	if (i == ARRAY_SIZE(ipc4_status))
+		dev_err(sdev->dev, "FW reported error: %u - Unknown\n", status);
+
+to_errno:
+	switch (status) {
+	case 2:
+	case 15:
+		ret = -EOPNOTSUPP;
+		break;
+	case 8:
+	case 11:
+	case 105 ... 109:
+	case 114 ... 115:
+	case 160 ... 163:
+	case 165:
+		ret = -ENOENT;
+		break;
+	case 4:
+	case 150:
+	case 151:
+		ret = -EBUSY;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_VERBOSE_IPC)
+#define DBG_IPC4_MSG_TYPE_ENTRY(type)	[SOF_IPC4_##type] = #type
+static const char * const ipc4_dbg_mod_msg_type[] = {
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_INIT_INSTANCE),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_CONFIG_GET),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_CONFIG_SET),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_LARGE_CONFIG_GET),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_LARGE_CONFIG_SET),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_BIND),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_UNBIND),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_SET_DX),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_SET_D0IX),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_ENTER_MODULE_RESTORE),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_EXIT_MODULE_RESTORE),
+	DBG_IPC4_MSG_TYPE_ENTRY(MOD_DELETE_INSTANCE),
+};
+
+static const char * const ipc4_dbg_glb_msg_type[] = {
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_BOOT_CONFIG),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_ROM_CONTROL),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_IPCGATEWAY_CMD),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_PERF_MEASUREMENTS_CMD),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_CHAIN_DMA),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_LOAD_MULTIPLE_MODULES),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_UNLOAD_MULTIPLE_MODULES),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_CREATE_PIPELINE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_DELETE_PIPELINE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_SET_PIPELINE_STATE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_GET_PIPELINE_STATE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_GET_PIPELINE_CONTEXT_SIZE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_SAVE_PIPELINE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_RESTORE_PIPELINE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_LOAD_LIBRARY),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_LOAD_LIBRARY_PREPARE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_INTERNAL_MESSAGE),
+	DBG_IPC4_MSG_TYPE_ENTRY(GLB_NOTIFICATION),
+};
+
+#define DBG_IPC4_NOTIFICATION_TYPE_ENTRY(type)	[SOF_IPC4_NOTIFY_##type] = #type
+static const char * const ipc4_dbg_notification_type[] = {
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(PHRASE_DETECTED),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(RESOURCE_EVENT),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(LOG_BUFFER_STATUS),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(TIMESTAMP_CAPTURED),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(FW_READY),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(FW_AUD_CLASS_RESULT),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(EXCEPTION_CAUGHT),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(MODULE_NOTIFICATION),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(PROBE_DATA_AVAILABLE),
+	DBG_IPC4_NOTIFICATION_TYPE_ENTRY(ASYNC_MSG_SRVC_MESSAGE),
+};
+
+static void sof_ipc4_log_header(struct device *dev, u8 *text, struct sof_ipc4_msg *msg,
+				bool data_size_valid)
+{
+	u32 val, type;
+	const u8 *str2 = NULL;
+	const u8 *str = NULL;
+
+	val = msg->primary & SOF_IPC4_MSG_TARGET_MASK;
+	type = SOF_IPC4_MSG_TYPE_GET(msg->primary);
+
+	if (val == SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG)) {
+		/* Module message */
+		if (type < SOF_IPC4_MOD_TYPE_LAST)
+			str = ipc4_dbg_mod_msg_type[type];
+		if (!str)
+			str = "Unknown Module message type";
+	} else {
+		/* Global FW message */
+		if (type < SOF_IPC4_GLB_TYPE_LAST)
+			str = ipc4_dbg_glb_msg_type[type];
+		if (!str)
+			str = "Unknown Global message type";
+
+		if (type == SOF_IPC4_GLB_NOTIFICATION) {
+			/* Notification message */
+			u32 notif = SOF_IPC4_NOTIFICATION_TYPE_GET(msg->primary);
+
+			/* Do not print log buffer notification if not desired */
+			if (notif == SOF_IPC4_NOTIFY_LOG_BUFFER_STATUS &&
+			    !sof_debug_check_flag(SOF_DBG_PRINT_DMA_POSITION_UPDATE_LOGS))
+				return;
+
+			if (notif < SOF_IPC4_NOTIFY_TYPE_LAST)
+				str2 = ipc4_dbg_notification_type[notif];
+			if (!str2)
+				str2 = "Unknown Global notification";
+		}
+	}
+
+	if (str2) {
+		if (data_size_valid && msg->data_size)
+			dev_dbg(dev, "%s: %#x|%#x: %s|%s [data size: %zu]\n",
+				text, msg->primary, msg->extension, str, str2,
+				msg->data_size);
+		else
+			dev_dbg(dev, "%s: %#x|%#x: %s|%s\n", text, msg->primary,
+				msg->extension, str, str2);
+	} else {
+		if (data_size_valid && msg->data_size)
+			dev_dbg(dev, "%s: %#x|%#x: %s [data size: %zu]\n",
+				text, msg->primary, msg->extension, str,
+				msg->data_size);
+		else
+			dev_dbg(dev, "%s: %#x|%#x: %s\n", text, msg->primary,
+				msg->extension, str);
+	}
+}
+
+const char *sof_ipc4_pipeline_state_str(enum sof_ipc4_pipeline_state state)
+{
+	switch (state) {
+	case SOF_IPC4_PIPE_INVALID_STATE:
+		return " (INVALID_STATE)";
+	case SOF_IPC4_PIPE_UNINITIALIZED:
+		return " (UNINITIALIZED)";
+	case SOF_IPC4_PIPE_RESET:
+		return " (RESET)";
+	case SOF_IPC4_PIPE_PAUSED:
+		return " (PAUSED)";
+	case SOF_IPC4_PIPE_RUNNING:
+		return " (RUNNING)";
+	case SOF_IPC4_PIPE_EOS:
+		return " (EOS)";
+	default:
+		return " (<unknown>)";
+	}
+}
+#else /* CONFIG_SND_SOC_SOF_DEBUG_VERBOSE_IPC */
+static void sof_ipc4_log_header(struct device *dev, u8 *text, struct sof_ipc4_msg *msg,
+				bool data_size_valid)
+{
+	/* Do not print log buffer notification if not desired */
+	if (!sof_debug_check_flag(SOF_DBG_PRINT_DMA_POSITION_UPDATE_LOGS) &&
+	    !SOF_IPC4_MSG_IS_MODULE_MSG(msg->primary) &&
+	    SOF_IPC4_MSG_TYPE_GET(msg->primary) == SOF_IPC4_GLB_NOTIFICATION &&
+	    SOF_IPC4_NOTIFICATION_TYPE_GET(msg->primary) == SOF_IPC4_NOTIFY_LOG_BUFFER_STATUS)
+		return;
+
+	if (data_size_valid && msg->data_size)
+		dev_dbg(dev, "%s: %#x|%#x [data size: %zu]\n", text,
+			msg->primary, msg->extension, msg->data_size);
+	else
+		dev_dbg(dev, "%s: %#x|%#x\n", text, msg->primary, msg->extension);
+}
+
+const char *sof_ipc4_pipeline_state_str(enum sof_ipc4_pipeline_state state)
+{
+	return "";
+}
+#endif
+
+static void sof_ipc4_dump_payload(struct snd_sof_dev *sdev,
+				  void *ipc_data, size_t size)
+{
+	print_hex_dump_debug("Message payload: ", DUMP_PREFIX_OFFSET,
+			     16, 4, ipc_data, size, false);
+}
+
+static const char *sof_ipc4_resource_type_str(u32 type)
+{
+	switch (type) {
+	case SOF_IPC4_MODULE_INSTANCE:
+		return "resource: MODULE_INSTANCE";
+	case SOF_IPC4_PIPELINE:
+		return "resource: PIPELINE";
+	case SOF_IPC4_GATEWAY:
+		return "resource: GATEWAY";
+	case SOF_IPC4_EDF_TASK:
+		return "resource: EDF_TASK";
+	case SOF_IPC4_INVALID_RESOURCE_TYPE:
+		return "Resource is invalid";
+	default:
+		return "Unknown resource type";
+	}
+}
+
+static const char *sof_ipc4_resource_event_type_str(u32 event_type)
+{
+	switch (event_type) {
+	case SOF_IPC4_MIXER_UNDERRUN_DETECTED:
+		return "event:    MIXER_UNDERRUN_DETECTED";
+	case SOF_IPC4_PROCESS_DATA_ERROR:
+		return "event:    PROCESS_DATA_ERROR";
+	case SOF_IPC4_GATEWAY_UNDERRUN_DETECTED:
+		return "event:    GATEWAY_UNDERRUN_DETECTED";
+	case SOF_IPC4_GATEWAY_OVERRUN_DETECTED:
+		return "event:    GATEWAY_OVERRUN_DETECTED";
+	default:
+		return "Unknown event type";
+	}
+}
+
+static void sof_ipc4_resource_event_handler(struct snd_sof_dev *sdev,
+					    struct sof_ipc4_msg *ipc4_msg)
+{
+	struct sof_ipc4_notify_resource_data *data = ipc4_msg->data_ptr;
+
+	/* Print event details */
+	switch (data->event_type) {
+	case SOF_IPC4_MIXER_UNDERRUN_DETECTED:
+		dev_dbg(sdev->dev, "%s (%u): eos %u, mixed %u, expected %u\n",
+			sof_ipc4_resource_event_type_str(data->event_type),
+			data->event_type, data->data.mixer_underrun.eos_flag,
+			data->data.mixer_underrun.data_mixed,
+			data->data.mixer_underrun.expected_data_mixed);
+		break;
+	case SOF_IPC4_PROCESS_DATA_ERROR:
+		dev_dbg(sdev->dev, "%s (%u): error_code %#x\n",
+			sof_ipc4_resource_event_type_str(data->event_type),
+			data->event_type, data->data.process_data_error.error_code);
+		break;
+	case SOF_IPC4_GATEWAY_UNDERRUN_DETECTED:
+	case SOF_IPC4_GATEWAY_OVERRUN_DETECTED:
+		dev_dbg(sdev->dev, "%s (%u)\n",
+			sof_ipc4_resource_event_type_str(data->event_type),
+			data->event_type);
+		break;
+	default:
+		dev_dbg(sdev->dev, "%s (%u): raw dws %#x %#x %#x %#x %#x %#x\n",
+			sof_ipc4_resource_event_type_str(data->event_type),
+			data->event_type,
+			data->data.dws[0], data->data.dws[1], data->data.dws[2],
+			data->data.dws[3], data->data.dws[4], data->data.dws[5]);
+		break;
+	}
+
+	/* Print resource details */
+	if (data->resource_type == SOF_IPC4_MODULE_INSTANCE) {
+		u32 module_id = SOF_IPC4_MOD_ID_GET(data->resource_id);
+		u32 instance_id = SOF_IPC4_MOD_INSTANCE_GET(data->resource_id);
+
+		dev_dbg(sdev->dev, "%s (%u), module_id %u, instance_id %u\n",
+			sof_ipc4_resource_type_str(data->resource_type),
+			data->resource_type, module_id, instance_id);
+	} else if (data->resource_type != SOF_IPC4_INVALID_RESOURCE_TYPE) {
+		dev_dbg(sdev->dev, "%s (%u), id %u\n",
+			sof_ipc4_resource_type_str(data->resource_type),
+			data->resource_type, data->resource_id);
+	}
+}
+
+static int sof_ipc4_get_reply(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_ipc_msg *msg = sdev->msg;
+	struct sof_ipc4_msg *ipc4_reply;
+	int ret;
+
+	/* get the generic reply */
+	ipc4_reply = msg->reply_data;
+
+	sof_ipc4_log_header(sdev->dev, "ipc tx reply", ipc4_reply, false);
+
+	ret = sof_ipc4_check_reply_status(sdev, ipc4_reply->primary);
+	if (ret)
+		return ret;
+
+	/* No other information is expected for non large config get replies */
+	if (!msg->reply_size || !SOF_IPC4_MSG_IS_MODULE_MSG(ipc4_reply->primary) ||
+	    (SOF_IPC4_MSG_TYPE_GET(ipc4_reply->primary) != SOF_IPC4_MOD_LARGE_CONFIG_GET))
+		return 0;
+
+	/* Read the requested payload */
+	snd_sof_dsp_mailbox_read(sdev, sdev->dsp_box.offset, ipc4_reply->data_ptr,
+				 msg->reply_size);
+
+	return 0;
+}
+
+/* wait for IPC message reply */
+static int ipc4_wait_tx_done(struct snd_sof_ipc *ipc, void *reply_data)
+{
+	struct snd_sof_ipc_msg *msg = &ipc->msg;
+	struct sof_ipc4_msg *ipc4_msg = msg->msg_data;
+	struct snd_sof_dev *sdev = ipc->sdev;
+	int ret;
+
+	/* wait for DSP IPC completion */
+	ret = wait_event_timeout(msg->waitq, msg->ipc_complete,
+				 msecs_to_jiffies(sdev->ipc_timeout));
+	if (ret == 0) {
+		dev_err(sdev->dev, "ipc timed out for %#x|%#x\n",
+			ipc4_msg->primary, ipc4_msg->extension);
+		snd_sof_handle_fw_exception(ipc->sdev, "IPC timeout");
+		return -ETIMEDOUT;
+	}
+
+	if (msg->reply_error) {
+		dev_err(sdev->dev, "ipc error for msg %#x|%#x\n",
+			ipc4_msg->primary, ipc4_msg->extension);
+		ret =  msg->reply_error;
+	} else {
+		if (reply_data) {
+			struct sof_ipc4_msg *ipc4_reply = msg->reply_data;
+			struct sof_ipc4_msg *ipc4_reply_data = reply_data;
+
+			/* Copy the header */
+			ipc4_reply_data->header_u64 = ipc4_reply->header_u64;
+			if (msg->reply_size && ipc4_reply_data->data_ptr) {
+				/* copy the payload returned from DSP */
+				memcpy(ipc4_reply_data->data_ptr, ipc4_reply->data_ptr,
+				       msg->reply_size);
+				ipc4_reply_data->data_size = msg->reply_size;
+			}
+		}
+
+		ret = 0;
+		sof_ipc4_log_header(sdev->dev, "ipc tx done ", ipc4_msg, true);
+	}
+
+	/* re-enable dumps after successful IPC tx */
+	if (sdev->ipc_dump_printed) {
+		sdev->dbg_dump_printed = false;
+		sdev->ipc_dump_printed = false;
+	}
+
+	return ret;
+}
+
+static int ipc4_tx_msg_unlocked(struct snd_sof_ipc *ipc,
+				void *msg_data, size_t msg_bytes,
+				void *reply_data, size_t reply_bytes)
+{
+	struct sof_ipc4_msg *ipc4_msg = msg_data;
+	struct snd_sof_dev *sdev = ipc->sdev;
+	int ret;
+
+	if (msg_bytes > ipc->max_payload_size || reply_bytes > ipc->max_payload_size)
+		return -EINVAL;
+
+	sof_ipc4_log_header(sdev->dev, "ipc tx      ", msg_data, true);
+
+	ret = sof_ipc_send_msg(sdev, msg_data, msg_bytes, reply_bytes);
+	if (ret) {
+		dev_err_ratelimited(sdev->dev,
+				    "%s: ipc message send for %#x|%#x failed: %d\n",
+				    __func__, ipc4_msg->primary, ipc4_msg->extension, ret);
+		return ret;
+	}
+
+	/* now wait for completion */
+	return ipc4_wait_tx_done(ipc, reply_data);
+}
+
+static int sof_ipc4_tx_msg(struct snd_sof_dev *sdev, void *msg_data, size_t msg_bytes,
+			   void *reply_data, size_t reply_bytes, bool no_pm)
+{
+	struct snd_sof_ipc *ipc = sdev->ipc;
+	int ret;
+
+	if (!msg_data)
+		return -EINVAL;
+
+	if (!no_pm) {
+		const struct sof_dsp_power_state target_state = {
+			.state = SOF_DSP_PM_D0,
+		};
+
+		/* ensure the DSP is in D0i0 before sending a new IPC */
+		ret = snd_sof_dsp_set_power_state(sdev, &target_state);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Serialise IPC TX */
+	guard(mutex)(&ipc->tx_mutex);
+
+	ret = ipc4_tx_msg_unlocked(ipc, msg_data, msg_bytes, reply_data, reply_bytes);
+
+	if (sof_debug_check_flag(SOF_DBG_DUMP_IPC_MESSAGE_PAYLOAD)) {
+		struct sof_ipc4_msg *msg = NULL;
+
+		/* payload is indicated by non zero msg/reply_bytes */
+		if (msg_bytes)
+			msg = msg_data;
+		else if (reply_bytes)
+			msg = reply_data;
+
+		if (msg)
+			sof_ipc4_dump_payload(sdev, msg->data_ptr, msg->data_size);
+	}
+
+	return ret;
+}
+
+static bool sof_ipc4_tx_payload_for_get_data(struct sof_ipc4_msg *tx)
+{
+	/*
+	 * Messages that require TX payload with LARGE_CONFIG_GET.
+	 * The TX payload is placed into the IPC message data section by caller,
+	 * which needs to be copied to temporary buffer since the received data
+	 * will overwrite it.
+	 */
+	switch (tx->extension & SOF_IPC4_MOD_EXT_MSG_PARAM_ID_MASK) {
+	case SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_SWITCH_CONTROL_PARAM_ID):
+	case SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_ENUM_CONTROL_PARAM_ID):
+	case SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_BYTES_CONTROL_PARAM_ID):
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int sof_ipc4_set_get_data(struct snd_sof_dev *sdev, void *data,
+				 size_t payload_bytes, bool set)
+{
+	const struct sof_dsp_power_state target_state = {
+			.state = SOF_DSP_PM_D0,
+	};
+	size_t payload_limit = sdev->ipc->max_payload_size;
+	struct sof_ipc4_msg *ipc4_msg = data;
+	struct sof_ipc4_msg tx = {{ 0 }};
+	struct sof_ipc4_msg rx = {{ 0 }};
+	size_t remaining = payload_bytes;
+	void *tx_payload_for_get = NULL;
+	size_t tx_data_size = 0;
+	size_t offset = 0;
+	size_t chunk_size;
+	int ret;
+
+	if (!data)
+		return -EINVAL;
+
+	if ((ipc4_msg->primary & SOF_IPC4_MSG_TARGET_MASK) !=
+	    SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG))
+		return -EINVAL;
+
+	ipc4_msg->primary &= ~SOF_IPC4_MSG_TYPE_MASK;
+	tx.primary = ipc4_msg->primary;
+	tx.extension = ipc4_msg->extension;
+
+	if (set)
+		tx.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_LARGE_CONFIG_SET);
+	else
+		tx.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_LARGE_CONFIG_GET);
+
+	tx.extension &= ~SOF_IPC4_MOD_EXT_MSG_SIZE_MASK;
+	tx.extension |= SOF_IPC4_MOD_EXT_MSG_SIZE(payload_bytes);
+
+	tx.extension |= SOF_IPC4_MOD_EXT_MSG_FIRST_BLOCK(1);
+
+	if (sof_ipc4_tx_payload_for_get_data(&tx)) {
+		tx_data_size = min(ipc4_msg->data_size, payload_limit);
+		tx_payload_for_get = kmemdup(ipc4_msg->data_ptr, tx_data_size,
+					     GFP_KERNEL);
+		if (!tx_payload_for_get)
+			return -ENOMEM;
+	}
+
+	/* ensure the DSP is in D0i0 before sending IPC */
+	ret = snd_sof_dsp_set_power_state(sdev, &target_state);
+	if (ret < 0) {
+		kfree(tx_payload_for_get);
+		return ret;
+	}
+
+	/* Serialise IPC TX */
+	guard(mutex)(&sdev->ipc->tx_mutex);
+
+	do {
+		size_t tx_size, rx_size;
+
+		if (remaining > payload_limit) {
+			chunk_size = payload_limit;
+		} else {
+			chunk_size = remaining;
+			if (set)
+				tx.extension |= SOF_IPC4_MOD_EXT_MSG_LAST_BLOCK(1);
+		}
+
+		if (offset) {
+			tx.extension &= ~SOF_IPC4_MOD_EXT_MSG_FIRST_BLOCK_MASK;
+			tx.extension &= ~SOF_IPC4_MOD_EXT_MSG_SIZE_MASK;
+			tx.extension |= SOF_IPC4_MOD_EXT_MSG_SIZE(offset);
+		}
+
+		if (set) {
+			tx.data_size = chunk_size;
+			tx.data_ptr = ipc4_msg->data_ptr + offset;
+
+			tx_size = chunk_size;
+			rx_size = 0;
+		} else {
+			rx.primary = 0;
+			rx.extension = 0;
+			rx.data_size = chunk_size;
+			rx.data_ptr = ipc4_msg->data_ptr + offset;
+
+			if (tx_payload_for_get) {
+				tx_size = tx_data_size;
+				tx.data_size = tx_size;
+				tx.data_ptr = tx_payload_for_get;
+			} else {
+				tx_size = 0;
+				tx.data_size = 0;
+				tx.data_ptr = NULL;
+			}
+			rx_size = chunk_size;
+		}
+
+		/* Send the message for the current chunk */
+		ret = ipc4_tx_msg_unlocked(sdev->ipc, &tx, tx_size, &rx, rx_size);
+		if (ret < 0) {
+			dev_err(sdev->dev,
+				"%s: large config %s failed at offset %zu: %d\n",
+				__func__, set ? "set" : "get", offset, ret);
+			goto out;
+		}
+
+		if (!set && rx.extension & SOF_IPC4_MOD_EXT_MSG_FIRST_BLOCK_MASK) {
+			/* Verify the firmware reported total payload size */
+			rx_size = rx.extension & SOF_IPC4_MOD_EXT_MSG_SIZE_MASK;
+
+			if (rx_size > payload_bytes) {
+				dev_err(sdev->dev,
+					"%s: Receive buffer (%zu) is too small for %zu\n",
+					__func__, payload_bytes, rx_size);
+				ret = -ENOMEM;
+				goto out;
+			}
+
+			if (rx_size < chunk_size) {
+				chunk_size = rx_size;
+				remaining = rx_size;
+			} else if (rx_size < payload_bytes) {
+				remaining = rx_size;
+			}
+		}
+
+		offset += chunk_size;
+		remaining -= chunk_size;
+	} while (remaining);
+
+	/* Adjust the received data size if needed */
+	if (!set && payload_bytes != offset)
+		ipc4_msg->data_size = offset;
+
+out:
+	if (sof_debug_check_flag(SOF_DBG_DUMP_IPC_MESSAGE_PAYLOAD))
+		sof_ipc4_dump_payload(sdev, ipc4_msg->data_ptr, ipc4_msg->data_size);
+
+	kfree(tx_payload_for_get);
+
+	return ret;
+}
+
+static int sof_ipc4_init_msg_memory(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc4_msg *ipc4_msg;
+	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
+
+	/* TODO: get max_payload_size from firmware */
+	sdev->ipc->max_payload_size = SOF_IPC4_MSG_MAX_SIZE;
+
+	/* Allocate memory for the ipc4 container and the maximum payload */
+	msg->reply_data = devm_kzalloc(sdev->dev, sdev->ipc->max_payload_size +
+				       sizeof(struct sof_ipc4_msg), GFP_KERNEL);
+	if (!msg->reply_data)
+		return -ENOMEM;
+
+	ipc4_msg = msg->reply_data;
+	ipc4_msg->data_ptr = msg->reply_data + sizeof(struct sof_ipc4_msg);
+
+	return 0;
+}
+
+size_t sof_ipc4_find_debug_slot_offset_by_type(struct snd_sof_dev *sdev,
+					       u32 slot_type)
+{
+	size_t slot_desc_type_offset;
+	u32 type;
+	int i;
+
+	/* The type is the second u32 in the slot descriptor */
+	slot_desc_type_offset = sdev->debug_box.offset + sizeof(u32);
+	for (i = 0; i < SOF_IPC4_MAX_DEBUG_SLOTS; i++) {
+		sof_mailbox_read(sdev, slot_desc_type_offset, &type, sizeof(type));
+
+		if (type == slot_type)
+			return sdev->debug_box.offset + (i + 1) * SOF_IPC4_DEBUG_SLOT_SIZE;
+
+		slot_desc_type_offset += SOF_IPC4_DEBUG_DESCRIPTOR_SIZE;
+	}
+
+	dev_dbg(sdev->dev, "Slot type %#x is not available in debug window\n", slot_type);
+	return 0;
+}
+EXPORT_SYMBOL(sof_ipc4_find_debug_slot_offset_by_type);
+
+static int ipc4_fw_ready(struct snd_sof_dev *sdev, struct sof_ipc4_msg *ipc4_msg)
+{
+	if (!sdev->first_boot) {
+		struct sof_ipc4_fw_data *ipc4_data = sdev->private;
+
+		/*
+		 * After the initial boot only check if the libraries have been
+		 * restored when full context save is not enabled
+		 */
+		if (!ipc4_data->fw_context_save)
+			ipc4_data->libraries_restored = !!(ipc4_msg->primary &
+							   SOF_IPC4_FW_READY_LIB_RESTORED);
+
+		return 0;
+	}
+
+	sof_ipc4_create_exception_debugfs_node(sdev);
+
+	return sof_ipc4_init_msg_memory(sdev);
+}
+
+static void sof_ipc4_module_notification_handler(struct snd_sof_dev *sdev,
+						 struct sof_ipc4_msg *ipc4_msg)
+{
+	struct sof_ipc4_notify_module_data *data = ipc4_msg->data_ptr;
+
+	/*
+	 * If the notification includes additional, module specific data, then
+	 * we need to re-allocate the buffer and re-read the whole payload,
+	 * including the event_data
+	 */
+	if (data->event_data_size) {
+		void *new;
+		int ret;
+
+		ipc4_msg->data_size += data->event_data_size;
+
+		new = krealloc(ipc4_msg->data_ptr, ipc4_msg->data_size, GFP_KERNEL);
+		if (!new) {
+			ipc4_msg->data_size -= data->event_data_size;
+			return;
+		}
+
+		/* re-read the whole payload */
+		ipc4_msg->data_ptr = new;
+		ret = snd_sof_ipc_msg_data(sdev, NULL, ipc4_msg->data_ptr,
+					   ipc4_msg->data_size);
+		if (ret < 0) {
+			dev_err(sdev->dev,
+				"Failed to read the full module notification: %d\n",
+				ret);
+			return;
+		}
+		data = ipc4_msg->data_ptr;
+	}
+
+	/* Handle ALSA kcontrol notification */
+	if ((data->event_id & SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_MASK) ==
+	    SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_VAL) {
+		const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
+
+		if (tplg_ops->control->update)
+			tplg_ops->control->update(sdev, ipc4_msg);
+	}
+}
+
+static void sof_ipc4_rx_msg(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc4_msg *ipc4_msg = sdev->ipc->msg.rx_data;
+	ipc4_notification_handler handler_func = NULL;
+	size_t data_size = 0;
+	int err;
+
+	if (!ipc4_msg || !SOF_IPC4_MSG_IS_NOTIFICATION(ipc4_msg->primary))
+		return;
+
+	ipc4_msg->data_ptr = NULL;
+	ipc4_msg->data_size = 0;
+
+	sof_ipc4_log_header(sdev->dev, "ipc rx      ", ipc4_msg, false);
+
+	switch (SOF_IPC4_NOTIFICATION_TYPE_GET(ipc4_msg->primary)) {
+	case SOF_IPC4_NOTIFY_FW_READY:
+		/* check for FW boot completion */
+		if (sdev->fw_state == SOF_FW_BOOT_IN_PROGRESS) {
+			err = ipc4_fw_ready(sdev, ipc4_msg);
+			if (err < 0)
+				sof_set_fw_state(sdev, SOF_FW_BOOT_READY_FAILED);
+			else
+				sof_set_fw_state(sdev, SOF_FW_BOOT_READY_OK);
+
+			/* wake up firmware loader */
+			wake_up(&sdev->boot_wait);
+		}
+
+		break;
+	case SOF_IPC4_NOTIFY_RESOURCE_EVENT:
+		data_size = sizeof(struct sof_ipc4_notify_resource_data);
+		handler_func = sof_ipc4_resource_event_handler;
+		break;
+	case SOF_IPC4_NOTIFY_LOG_BUFFER_STATUS:
+		sof_ipc4_mtrace_update_pos(sdev, SOF_IPC4_LOG_CORE_GET(ipc4_msg->primary));
+		break;
+	case SOF_IPC4_NOTIFY_EXCEPTION_CAUGHT:
+		snd_sof_dsp_panic(sdev, 0, true);
+		break;
+	case SOF_IPC4_NOTIFY_MODULE_NOTIFICATION:
+		data_size = sizeof(struct sof_ipc4_notify_module_data);
+		handler_func = sof_ipc4_module_notification_handler;
+		break;
+	default:
+		dev_dbg(sdev->dev, "Unhandled DSP message: %#x|%#x\n",
+			ipc4_msg->primary, ipc4_msg->extension);
+		break;
+	}
+
+	if (data_size) {
+		ipc4_msg->data_ptr = kmalloc(data_size, GFP_KERNEL);
+		if (!ipc4_msg->data_ptr)
+			return;
+
+		ipc4_msg->data_size = data_size;
+		err = snd_sof_ipc_msg_data(sdev, NULL, ipc4_msg->data_ptr, ipc4_msg->data_size);
+		if (err < 0) {
+			dev_err(sdev->dev, "failed to read IPC notification data: %d\n", err);
+			kfree(ipc4_msg->data_ptr);
+			ipc4_msg->data_ptr = NULL;
+			ipc4_msg->data_size = 0;
+			return;
+		}
+	}
+
+	/* Handle notifications with payload */
+	if (handler_func)
+		handler_func(sdev, ipc4_msg);
+
+	sof_ipc4_log_header(sdev->dev, "ipc rx done ", ipc4_msg, true);
+
+	if (data_size) {
+		if (sof_debug_check_flag(SOF_DBG_DUMP_IPC_MESSAGE_PAYLOAD))
+			sof_ipc4_dump_payload(sdev, ipc4_msg->data_ptr,
+					      ipc4_msg->data_size);
+
+		kfree(ipc4_msg->data_ptr);
+		ipc4_msg->data_ptr = NULL;
+		ipc4_msg->data_size = 0;
+	}
+}
+
+static int sof_ipc4_set_core_state(struct snd_sof_dev *sdev, int core_idx, bool on)
+{
+	struct sof_ipc4_dx_state_info dx_state;
+	struct sof_ipc4_msg msg;
+
+	dx_state.core_mask = BIT(core_idx);
+	if (on)
+		dx_state.dx_mask = BIT(core_idx);
+	else
+		dx_state.dx_mask = 0;
+
+	msg.primary = SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_SET_DX);
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+	msg.extension = 0;
+	msg.data_ptr = &dx_state;
+	msg.data_size = sizeof(dx_state);
+
+	return sof_ipc4_tx_msg(sdev, &msg, msg.data_size, NULL, 0, false);
+}
+
+/*
+ * The context save callback is used to send a message to the firmware notifying
+ * it that the primary core is going to be turned off, which is used as an
+ * indication to prepare for a full power down, thus preparing for IMR boot
+ * (when supported)
+ *
+ * Note: in IPC4 there is no message used to restore context, thus no context
+ * restore callback is implemented
+ */
+static int sof_ipc4_ctx_save(struct snd_sof_dev *sdev)
+{
+	return sof_ipc4_set_core_state(sdev, SOF_DSP_PRIMARY_CORE, false);
+}
+
+static int sof_ipc4_set_pm_gate(struct snd_sof_dev *sdev, u32 flags)
+{
+	struct sof_ipc4_msg msg = {{0}};
+
+	msg.primary = SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_SET_D0IX);
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+	msg.extension = flags;
+
+	return sof_ipc4_tx_msg(sdev, &msg, 0, NULL, 0, true);
+}
+
+static const struct sof_ipc_pm_ops ipc4_pm_ops = {
+	.ctx_save = sof_ipc4_ctx_save,
+	.set_core_state = sof_ipc4_set_core_state,
+	.set_pm_gate = sof_ipc4_set_pm_gate,
+};
+
+static int sof_ipc4_init(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
+	int inbox_offset;
+
+	mutex_init(&ipc4_data->pipeline_state_mutex);
+
+	xa_init_flags(&ipc4_data->fw_lib_xa, XA_FLAGS_ALLOC);
+
+	/* Set up the windows for IPC communication */
+	inbox_offset = snd_sof_dsp_get_mailbox_offset(sdev);
+	if (inbox_offset < 0) {
+		dev_err(sdev->dev, "%s: No mailbox offset\n", __func__);
+		return inbox_offset;
+	}
+
+	sdev->dsp_box.offset = inbox_offset;
+	sdev->dsp_box.size = SOF_IPC4_MSG_MAX_SIZE;
+	sdev->host_box.offset = snd_sof_dsp_get_window_offset(sdev,
+							SOF_IPC4_OUTBOX_WINDOW_IDX);
+	sdev->host_box.size = SOF_IPC4_MSG_MAX_SIZE;
+
+	sdev->debug_box.offset = snd_sof_dsp_get_window_offset(sdev,
+							SOF_IPC4_DEBUG_WINDOW_IDX);
+
+	sdev->fw_info_box.offset = snd_sof_dsp_get_window_offset(sdev,
+							SOF_IPC4_INBOX_WINDOW_IDX);
+	sdev->fw_info_box.size = sizeof(struct sof_ipc4_fw_registers);
+
+	dev_dbg(sdev->dev, "mailbox upstream %#x - size %#x\n",
+		sdev->dsp_box.offset, SOF_IPC4_MSG_MAX_SIZE);
+	dev_dbg(sdev->dev, "mailbox downstream %#x - size %#x\n",
+		sdev->host_box.offset, SOF_IPC4_MSG_MAX_SIZE);
+	dev_dbg(sdev->dev, "debug box %#x\n", sdev->debug_box.offset);
+
+	return 0;
+}
+
+static void sof_ipc4_exit(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
+	struct sof_ipc4_fw_library *fw_lib;
+	unsigned long lib_id;
+
+	xa_for_each(&ipc4_data->fw_lib_xa, lib_id, fw_lib) {
+		/*
+		 * The basefw (ID == 0) is handled by generic code, it is not
+		 * loaded by IPC4 code.
+		 */
+		if (lib_id != 0)
+			release_firmware(fw_lib->sof_fw.fw);
+
+		fw_lib->sof_fw.fw = NULL;
+	}
+
+	xa_destroy(&ipc4_data->fw_lib_xa);
+}
+
+static int sof_ipc4_post_boot(struct snd_sof_dev *sdev)
+{
+	if (sdev->first_boot) {
+		int  ret = sof_ipc4_complete_split_release(sdev);
+
+		if (ret)
+			return ret;
+
+		return sof_ipc4_query_fw_configuration(sdev);
+	}
+
+	return sof_ipc4_reload_fw_libraries(sdev);
+}
+
+const struct sof_ipc_ops ipc4_ops = {
+	.init = sof_ipc4_init,
+	.exit = sof_ipc4_exit,
+	.post_fw_boot = sof_ipc4_post_boot,
+	.tx_msg = sof_ipc4_tx_msg,
+	.rx_msg = sof_ipc4_rx_msg,
+	.set_get_data = sof_ipc4_set_get_data,
+	.get_reply = sof_ipc4_get_reply,
+	.pm = &ipc4_pm_ops,
+	.fw_loader = &ipc4_loader_ops,
+	.tplg = &ipc4_tplg_ops,
+	.pcm = &ipc4_pcm_ops,
+	.fw_tracing = &ipc4_mtrace_ops,
+};
+
+void sof_ipc4_mic_privacy_state_change(struct snd_sof_dev *sdev, bool state)
+{
+	struct sof_ipc4_msg msg;
+	u32 data = state;
+
+	/*
+	 * The mic privacy change notification's role is to notify the running
+	 * firmware that there is a change in mic privacy state from whatever
+	 * the state was before - since the firmware booted up or since the
+	 * previous change during runtime.
+	 *
+	 * If the firmware has not been booted up, there is no need to send
+	 * change notification (the firmware is not booted up).
+	 * The firmware checks the current state during its boot.
+	 */
+	if (sdev->fw_state != SOF_FW_BOOT_COMPLETE)
+		return;
+
+	msg.primary = SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MOD_ID(SOF_IPC4_MOD_INIT_BASEFW_MOD_ID);
+	msg.primary |= SOF_IPC4_MOD_INSTANCE(SOF_IPC4_MOD_INIT_BASEFW_INSTANCE_ID);
+	msg.extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_FW_PARAM_MIC_PRIVACY_STATE_CHANGE);
+
+	msg.data_size = sizeof(data);
+	msg.data_ptr = &data;
+
+	sof_ipc4_set_get_data(sdev, &msg, msg.data_size, true);
+}
+EXPORT_SYMBOL(sof_ipc4_mic_privacy_state_change);