Merge tag 'sound-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "The most significant changes at this cycle are the Sound Open Firmware
  support from Intel for the common DSP framework along with its support
  for Intel platforms. It's a door opened to a real "free" firmware (in
  the sense of FOSS), and other parties show interests in it.

  In addition to SOF, we've got a bunch of updates and fixes as usual.
  Some highlights are below.

  ALSA core:
   - Cleanups and fixes in ALSA timer code to cover some races spotted
     by syzkaller
   - Cleanups and fixes in ALSA sequencer code to cover some races,
     again unsurprisingly, spotted by syzkaller
   - Optimize the common page allocation helper with alloc_pages_exact()

  ASoC:
   - Add SOF core support, as well as Intel SOF platform support
   - Generic card driver improvements: support for MCLK/sample rate
     ratio and pin switches
   - A big set of improvements to TLV320AIC32x4 drivers
   - New drivers for Freescale audio mixers, several Intel machines,
     several Mediatek machines, Meson G12A, Spreadtrum compressed audio
     and DMA devices

  HD-audio:
   - A few Realtek codec fixes for reducing pop noises
   - Quirks for Chromebooks
   - Workaround for faulty connection report on AMD/Nvidia HDMI

  Others:
   - A quirk for Focusrite Scarlett Solo USB-audio
   - Add support for MOTU 8pre FireWire
   - 24bit sample format support in aloop
   - GUS patch format support (finally, over a decade) in native emux
     synth code"

* tag 'sound-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (375 commits)
  ASoC: SOF: Fix unused variable warnings
  ALSA: line6: toneport: Fix broken usage of timer for delayed execution
  ALSA: aica: Fix a long-time build breakage
  ALSA: hda/realtek - Support low power consumption for ALC256
  ASoC: stm32: i2s: update pcm hardware constraints
  ASoC: codec: hdac_hdmi: no checking monitor in hw_params
  ASoC: mediatek: mt6358: save PGA for mixer control
  ASoC: mediatek: mt6358: save output volume for mixer controls
  ASoC: mediatek: mt6358: initialize setting when ramping volume
  ASoC: SOF: core: fix undefined nocodec reference
  ASoC: SOF: xtensa: fix undefined references
  ASoC: SOF: Propagate sof_get_ctrl_copy_params() error properly
  ALSA: hdea/realtek - Headset fixup for System76 Gazelle (gaze14)
  ALSA: hda/intel: add CometLake PCI IDs
  ALSA: hda/realtek - Support low power consumption for ALC295
  ASoC: rockchip: Fix an uninitialized variable compile warning
  ASoC: SOF: Fix a compile warning with CONFIG_PCI=n
  ASoC: da7219: Fix a compile warning at CONFIG_COMMON_CLK=n
  ASoC: sound/soc/sof/: fix kconfig dependency warning
  ASoC: stm32: spdifrx: change trace level on iec control
  ...

1 files changed, 846 insertions, 0 deletions

diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
new file mode 100644
index 000000000000..f0b9d3c53f6f
--- /dev/null
+++ b/sound/soc/sof/ipc.c
@@ -0,0 +1,846 @@
+// SPDX-License-Identifier: (GPL-2.0 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) 2018 Intel Corporation. All rights reserved.
+//
+// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
+//
+// Generic IPC layer that can work over MMIO and SPI/I2C. PHY layer provided
+// by platform driver code.
+//
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+#include "sof-priv.h"
+#include "ops.h"
+
+/*
+ * IPC message default size and timeout (ms).
+ * TODO: allow platforms to set size and timeout.
+ */
+#define IPC_TIMEOUT_MS		300
+
+static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_id);
+static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd);
+
+/*
+ * IPC message Tx/Rx message handling.
+ */
+
+/* SOF generic IPC data */
+struct snd_sof_ipc {
+	struct snd_sof_dev *sdev;
+
+	/* protects messages and the disable flag */
+	struct mutex tx_mutex;
+	/* disables further sending of ipc's */
+	bool disable_ipc_tx;
+
+	struct snd_sof_ipc_msg msg;
+};
+
+struct sof_ipc_ctrl_data_params {
+	size_t msg_bytes;
+	size_t hdr_bytes;
+	size_t pl_size;
+	size_t elems;
+	u32 num_msg;
+	u8 *src;
+	u8 *dst;
+};
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_VERBOSE_IPC)
+static void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
+{
+	u8 *str;
+	u8 *str2 = NULL;
+	u32 glb;
+	u32 type;
+
+	glb = cmd & SOF_GLB_TYPE_MASK;
+	type = cmd & SOF_CMD_TYPE_MASK;
+
+	switch (glb) {
+	case SOF_IPC_GLB_REPLY:
+		str = "GLB_REPLY"; break;
+	case SOF_IPC_GLB_COMPOUND:
+		str = "GLB_COMPOUND"; break;
+	case SOF_IPC_GLB_TPLG_MSG:
+		str = "GLB_TPLG_MSG";
+		switch (type) {
+		case SOF_IPC_TPLG_COMP_NEW:
+			str2 = "COMP_NEW"; break;
+		case SOF_IPC_TPLG_COMP_FREE:
+			str2 = "COMP_FREE"; break;
+		case SOF_IPC_TPLG_COMP_CONNECT:
+			str2 = "COMP_CONNECT"; break;
+		case SOF_IPC_TPLG_PIPE_NEW:
+			str2 = "PIPE_NEW"; break;
+		case SOF_IPC_TPLG_PIPE_FREE:
+			str2 = "PIPE_FREE"; break;
+		case SOF_IPC_TPLG_PIPE_CONNECT:
+			str2 = "PIPE_CONNECT"; break;
+		case SOF_IPC_TPLG_PIPE_COMPLETE:
+			str2 = "PIPE_COMPLETE"; break;
+		case SOF_IPC_TPLG_BUFFER_NEW:
+			str2 = "BUFFER_NEW"; break;
+		case SOF_IPC_TPLG_BUFFER_FREE:
+			str2 = "BUFFER_FREE"; break;
+		default:
+			str2 = "unknown type"; break;
+		}
+		break;
+	case SOF_IPC_GLB_PM_MSG:
+		str = "GLB_PM_MSG";
+		switch (type) {
+		case SOF_IPC_PM_CTX_SAVE:
+			str2 = "CTX_SAVE"; break;
+		case SOF_IPC_PM_CTX_RESTORE:
+			str2 = "CTX_RESTORE"; break;
+		case SOF_IPC_PM_CTX_SIZE:
+			str2 = "CTX_SIZE"; break;
+		case SOF_IPC_PM_CLK_SET:
+			str2 = "CLK_SET"; break;
+		case SOF_IPC_PM_CLK_GET:
+			str2 = "CLK_GET"; break;
+		case SOF_IPC_PM_CLK_REQ:
+			str2 = "CLK_REQ"; break;
+		case SOF_IPC_PM_CORE_ENABLE:
+			str2 = "CORE_ENABLE"; break;
+		default:
+			str2 = "unknown type"; break;
+		}
+		break;
+	case SOF_IPC_GLB_COMP_MSG:
+		str = "GLB_COMP_MSG: SET_VALUE";
+		switch (type) {
+		case SOF_IPC_COMP_SET_VALUE:
+			str2 = "SET_VALUE"; break;
+		case SOF_IPC_COMP_GET_VALUE:
+			str2 = "GET_VALUE"; break;
+		case SOF_IPC_COMP_SET_DATA:
+			str2 = "SET_DATA"; break;
+		case SOF_IPC_COMP_GET_DATA:
+			str2 = "GET_DATA"; break;
+		default:
+			str2 = "unknown type"; break;
+		}
+		break;
+	case SOF_IPC_GLB_STREAM_MSG:
+		str = "GLB_STREAM_MSG";
+		switch (type) {
+		case SOF_IPC_STREAM_PCM_PARAMS:
+			str2 = "PCM_PARAMS"; break;
+		case SOF_IPC_STREAM_PCM_PARAMS_REPLY:
+			str2 = "PCM_REPLY"; break;
+		case SOF_IPC_STREAM_PCM_FREE:
+			str2 = "PCM_FREE"; break;
+		case SOF_IPC_STREAM_TRIG_START:
+			str2 = "TRIG_START"; break;
+		case SOF_IPC_STREAM_TRIG_STOP:
+			str2 = "TRIG_STOP"; break;
+		case SOF_IPC_STREAM_TRIG_PAUSE:
+			str2 = "TRIG_PAUSE"; break;
+		case SOF_IPC_STREAM_TRIG_RELEASE:
+			str2 = "TRIG_RELEASE"; break;
+		case SOF_IPC_STREAM_TRIG_DRAIN:
+			str2 = "TRIG_DRAIN"; break;
+		case SOF_IPC_STREAM_TRIG_XRUN:
+			str2 = "TRIG_XRUN"; break;
+		case SOF_IPC_STREAM_POSITION:
+			str2 = "POSITION"; break;
+		case SOF_IPC_STREAM_VORBIS_PARAMS:
+			str2 = "VORBIS_PARAMS"; break;
+		case SOF_IPC_STREAM_VORBIS_FREE:
+			str2 = "VORBIS_FREE"; break;
+		default:
+			str2 = "unknown type"; break;
+		}
+		break;
+	case SOF_IPC_FW_READY:
+		str = "FW_READY"; break;
+	case SOF_IPC_GLB_DAI_MSG:
+		str = "GLB_DAI_MSG";
+		switch (type) {
+		case SOF_IPC_DAI_CONFIG:
+			str2 = "CONFIG"; break;
+		case SOF_IPC_DAI_LOOPBACK:
+			str2 = "LOOPBACK"; break;
+		default:
+			str2 = "unknown type"; break;
+		}
+		break;
+	case SOF_IPC_GLB_TRACE_MSG:
+		str = "GLB_TRACE_MSG"; break;
+	default:
+		str = "unknown GLB command"; break;
+	}
+
+	if (str2)
+		dev_dbg(dev, "%s: 0x%x: %s: %s\n", text, cmd, str, str2);
+	else
+		dev_dbg(dev, "%s: 0x%x: %s\n", text, cmd, str);
+}
+#else
+static inline void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
+{
+	dev_dbg(dev, "%s: 0x%x\n", text, cmd);
+}
+#endif
+
+/* wait for IPC message reply */
+static int tx_wait_done(struct snd_sof_ipc *ipc, struct snd_sof_ipc_msg *msg,
+			void *reply_data)
+{
+	struct snd_sof_dev *sdev = ipc->sdev;
+	struct sof_ipc_cmd_hdr *hdr = msg->msg_data;
+	int ret;
+
+	/* wait for DSP IPC completion */
+	ret = wait_event_timeout(msg->waitq, msg->ipc_complete,
+				 msecs_to_jiffies(IPC_TIMEOUT_MS));
+
+	if (ret == 0) {
+		dev_err(sdev->dev, "error: ipc timed out for 0x%x size %d\n",
+			hdr->cmd, hdr->size);
+		snd_sof_dsp_dbg_dump(ipc->sdev, SOF_DBG_REGS | SOF_DBG_MBOX);
+		snd_sof_ipc_dump(ipc->sdev);
+		snd_sof_trace_notify_for_error(ipc->sdev);
+		ret = -ETIMEDOUT;
+	} else {
+		/* copy the data returned from DSP */
+		ret = msg->reply_error;
+		if (msg->reply_size)
+			memcpy(reply_data, msg->reply_data, msg->reply_size);
+		if (ret < 0)
+			dev_err(sdev->dev, "error: ipc error for 0x%x size %zu\n",
+				hdr->cmd, msg->reply_size);
+		else
+			ipc_log_header(sdev->dev, "ipc tx succeeded", hdr->cmd);
+	}
+
+	return ret;
+}
+
+/* send IPC message from host to DSP */
+static int sof_ipc_tx_message_unlocked(struct snd_sof_ipc *ipc, u32 header,
+				       void *msg_data, size_t msg_bytes,
+				       void *reply_data, size_t reply_bytes)
+{
+	struct snd_sof_dev *sdev = ipc->sdev;
+	struct snd_sof_ipc_msg *msg;
+	int ret;
+
+	if (ipc->disable_ipc_tx)
+		return -ENODEV;
+
+	/*
+	 * The spin-lock is also still needed to protect message objects against
+	 * other atomic contexts.
+	 */
+	spin_lock_irq(&sdev->ipc_lock);
+
+	/* initialise the message */
+	msg = &ipc->msg;
+
+	msg->header = header;
+	msg->msg_size = msg_bytes;
+	msg->reply_size = reply_bytes;
+	msg->reply_error = 0;
+
+	/* attach any data */
+	if (msg_bytes)
+		memcpy(msg->msg_data, msg_data, msg_bytes);
+
+	sdev->msg = msg;
+
+	ret = snd_sof_dsp_send_msg(sdev, msg);
+	/* Next reply that we receive will be related to this message */
+	if (!ret)
+		msg->ipc_complete = false;
+
+	spin_unlock_irq(&sdev->ipc_lock);
+
+	if (ret < 0) {
+		/* So far IPC TX never fails, consider making the above void */
+		dev_err_ratelimited(sdev->dev,
+				    "error: ipc tx failed with error %d\n",
+				    ret);
+		return ret;
+	}
+
+	ipc_log_header(sdev->dev, "ipc tx", msg->header);
+
+	/* now wait for completion */
+	if (!ret)
+		ret = tx_wait_done(ipc, msg, reply_data);
+
+	return ret;
+}
+
+/* send IPC message from host to DSP */
+int sof_ipc_tx_message(struct snd_sof_ipc *ipc, u32 header,
+		       void *msg_data, size_t msg_bytes, void *reply_data,
+		       size_t reply_bytes)
+{
+	int ret;
+
+	if (msg_bytes > SOF_IPC_MSG_MAX_SIZE ||
+	    reply_bytes > SOF_IPC_MSG_MAX_SIZE)
+		return -ENOBUFS;
+
+	/* Serialise IPC TX */
+	mutex_lock(&ipc->tx_mutex);
+
+	ret = sof_ipc_tx_message_unlocked(ipc, header, msg_data, msg_bytes,
+					  reply_data, reply_bytes);
+
+	mutex_unlock(&ipc->tx_mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL(sof_ipc_tx_message);
+
+/* handle reply message from DSP */
+int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
+{
+	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
+	unsigned long flags;
+
+	/*
+	 * Protect against a theoretical race with sof_ipc_tx_message(): if the
+	 * DSP is fast enough to receive an IPC message, reply to it, and the
+	 * host interrupt processing calls this function on a different core
+	 * from the one, where the sending is taking place, the message might
+	 * not yet be marked as expecting a reply.
+	 */
+	spin_lock_irqsave(&sdev->ipc_lock, flags);
+
+	if (msg->ipc_complete) {
+		spin_unlock_irqrestore(&sdev->ipc_lock, flags);
+		dev_err(sdev->dev, "error: no reply expected, received 0x%x",
+			msg_id);
+		return -EINVAL;
+	}
+
+	/* wake up and return the error if we have waiters on this message ? */
+	msg->ipc_complete = true;
+	wake_up(&msg->waitq);
+
+	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(snd_sof_ipc_reply);
+
+/* DSP firmware has sent host a message  */
+void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc_cmd_hdr hdr;
+	u32 cmd, type;
+	int err = 0;
+
+	/* read back header */
+	snd_sof_ipc_msg_data(sdev, NULL, &hdr, sizeof(hdr));
+	ipc_log_header(sdev->dev, "ipc rx", hdr.cmd);
+
+	cmd = hdr.cmd & SOF_GLB_TYPE_MASK;
+	type = hdr.cmd & SOF_CMD_TYPE_MASK;
+
+	/* check message type */
+	switch (cmd) {
+	case SOF_IPC_GLB_REPLY:
+		dev_err(sdev->dev, "error: ipc reply unknown\n");
+		break;
+	case SOF_IPC_FW_READY:
+		/* check for FW boot completion */
+		if (!sdev->boot_complete) {
+			err = sof_ops(sdev)->fw_ready(sdev, cmd);
+			if (err < 0) {
+				/*
+				 * this indicates a mismatch in ABI
+				 * between the driver and fw
+				 */
+				dev_err(sdev->dev, "error: ABI mismatch %d\n",
+					err);
+			} else {
+				/* firmware boot completed OK */
+				sdev->boot_complete = true;
+			}
+
+			/* wake up firmware loader */
+			wake_up(&sdev->boot_wait);
+		}
+		break;
+	case SOF_IPC_GLB_COMPOUND:
+	case SOF_IPC_GLB_TPLG_MSG:
+	case SOF_IPC_GLB_PM_MSG:
+	case SOF_IPC_GLB_COMP_MSG:
+		break;
+	case SOF_IPC_GLB_STREAM_MSG:
+		/* need to pass msg id into the function */
+		ipc_stream_message(sdev, hdr.cmd);
+		break;
+	case SOF_IPC_GLB_TRACE_MSG:
+		ipc_trace_message(sdev, type);
+		break;
+	default:
+		dev_err(sdev->dev, "error: unknown DSP message 0x%x\n", cmd);
+		break;
+	}
+
+	ipc_log_header(sdev->dev, "ipc rx done", hdr.cmd);
+}
+EXPORT_SYMBOL(snd_sof_ipc_msgs_rx);
+
+/*
+ * IPC trace mechanism.
+ */
+
+static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_id)
+{
+	struct sof_ipc_dma_trace_posn posn;
+
+	switch (msg_id) {
+	case SOF_IPC_TRACE_DMA_POSITION:
+		/* read back full message */
+		snd_sof_ipc_msg_data(sdev, NULL, &posn, sizeof(posn));
+		snd_sof_trace_update_pos(sdev, &posn);
+		break;
+	default:
+		dev_err(sdev->dev, "error: unhandled trace message %x\n",
+			msg_id);
+		break;
+	}
+}
+
+/*
+ * IPC stream position.
+ */
+
+static void ipc_period_elapsed(struct snd_sof_dev *sdev, u32 msg_id)
+{
+	struct snd_sof_pcm_stream *stream;
+	struct sof_ipc_stream_posn posn;
+	struct snd_sof_pcm *spcm;
+	int direction;
+
+	spcm = snd_sof_find_spcm_comp(sdev, msg_id, &direction);
+	if (!spcm) {
+		dev_err(sdev->dev,
+			"error: period elapsed for unknown stream, msg_id %d\n",
+			msg_id);
+		return;
+	}
+
+	stream = &spcm->stream[direction];
+	snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
+
+	dev_dbg(sdev->dev, "posn : host 0x%llx dai 0x%llx wall 0x%llx\n",
+		posn.host_posn, posn.dai_posn, posn.wallclock);
+
+	memcpy(&stream->posn, &posn, sizeof(posn));
+
+	/* only inform ALSA for period_wakeup mode */
+	if (!stream->substream->runtime->no_period_wakeup)
+		snd_sof_pcm_period_elapsed(stream->substream);
+}
+
+/* DSP notifies host of an XRUN within FW */
+static void ipc_xrun(struct snd_sof_dev *sdev, u32 msg_id)
+{
+	struct snd_sof_pcm_stream *stream;
+	struct sof_ipc_stream_posn posn;
+	struct snd_sof_pcm *spcm;
+	int direction;
+
+	spcm = snd_sof_find_spcm_comp(sdev, msg_id, &direction);
+	if (!spcm) {
+		dev_err(sdev->dev, "error: XRUN for unknown stream, msg_id %d\n",
+			msg_id);
+		return;
+	}
+
+	stream = &spcm->stream[direction];
+	snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
+
+	dev_dbg(sdev->dev,  "posn XRUN: host %llx comp %d size %d\n",
+		posn.host_posn, posn.xrun_comp_id, posn.xrun_size);
+
+#if defined(CONFIG_SND_SOC_SOF_DEBUG_XRUN_STOP)
+	/* stop PCM on XRUN - used for pipeline debug */
+	memcpy(&stream->posn, &posn, sizeof(posn));
+	snd_pcm_stop_xrun(stream->substream);
+#endif
+}
+
+/* stream notifications from DSP FW */
+static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd)
+{
+	/* get msg cmd type and msd id */
+	u32 msg_type = msg_cmd & SOF_CMD_TYPE_MASK;
+	u32 msg_id = SOF_IPC_MESSAGE_ID(msg_cmd);
+
+	switch (msg_type) {
+	case SOF_IPC_STREAM_POSITION:
+		ipc_period_elapsed(sdev, msg_id);
+		break;
+	case SOF_IPC_STREAM_TRIG_XRUN:
+		ipc_xrun(sdev, msg_id);
+		break;
+	default:
+		dev_err(sdev->dev, "error: unhandled stream message %x\n",
+			msg_id);
+		break;
+	}
+}
+
+/* get stream position IPC - use faster MMIO method if available on platform */
+int snd_sof_ipc_stream_posn(struct snd_sof_dev *sdev,
+			    struct snd_sof_pcm *spcm, int direction,
+			    struct sof_ipc_stream_posn *posn)
+{
+	struct sof_ipc_stream stream;
+	int err;
+
+	/* read position via slower IPC */
+	stream.hdr.size = sizeof(stream);
+	stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_POSITION;
+	stream.comp_id = spcm->stream[direction].comp_id;
+
+	/* send IPC to the DSP */
+	err = sof_ipc_tx_message(sdev->ipc,
+				 stream.hdr.cmd, &stream, sizeof(stream), &posn,
+				 sizeof(*posn));
+	if (err < 0) {
+		dev_err(sdev->dev, "error: failed to get stream %d position\n",
+			stream.comp_id);
+		return err;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(snd_sof_ipc_stream_posn);
+
+static int sof_get_ctrl_copy_params(enum sof_ipc_ctrl_type ctrl_type,
+				    struct sof_ipc_ctrl_data *src,
+				    struct sof_ipc_ctrl_data *dst,
+				    struct sof_ipc_ctrl_data_params *sparams)
+{
+	switch (ctrl_type) {
+	case SOF_CTRL_TYPE_VALUE_CHAN_GET:
+	case SOF_CTRL_TYPE_VALUE_CHAN_SET:
+		sparams->src = (u8 *)src->chanv;
+		sparams->dst = (u8 *)dst->chanv;
+		break;
+	case SOF_CTRL_TYPE_VALUE_COMP_GET:
+	case SOF_CTRL_TYPE_VALUE_COMP_SET:
+		sparams->src = (u8 *)src->compv;
+		sparams->dst = (u8 *)dst->compv;
+		break;
+	case SOF_CTRL_TYPE_DATA_GET:
+	case SOF_CTRL_TYPE_DATA_SET:
+		sparams->src = (u8 *)src->data->data;
+		sparams->dst = (u8 *)dst->data->data;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* calculate payload size and number of messages */
+	sparams->pl_size = SOF_IPC_MSG_MAX_SIZE - sparams->hdr_bytes;
+	sparams->num_msg = DIV_ROUND_UP(sparams->msg_bytes, sparams->pl_size);
+
+	return 0;
+}
+
+static int sof_set_get_large_ctrl_data(struct snd_sof_dev *sdev,
+				       struct sof_ipc_ctrl_data *cdata,
+				       struct sof_ipc_ctrl_data_params *sparams,
+				       bool send)
+{
+	struct sof_ipc_ctrl_data *partdata;
+	size_t send_bytes;
+	size_t offset = 0;
+	size_t msg_bytes;
+	size_t pl_size;
+	int err;
+	int i;
+
+	/* allocate max ipc size because we have at least one */
+	partdata = kzalloc(SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
+	if (!partdata)
+		return -ENOMEM;
+
+	if (send)
+		err = sof_get_ctrl_copy_params(cdata->type, cdata, partdata,
+					       sparams);
+	else
+		err = sof_get_ctrl_copy_params(cdata->type, partdata, cdata,
+					       sparams);
+	if (err < 0)
+		return err;
+
+	msg_bytes = sparams->msg_bytes;
+	pl_size = sparams->pl_size;
+
+	/* copy the header data */
+	memcpy(partdata, cdata, sparams->hdr_bytes);
+
+	/* Serialise IPC TX */
+	mutex_lock(&sdev->ipc->tx_mutex);
+
+	/* copy the payload data in a loop */
+	for (i = 0; i < sparams->num_msg; i++) {
+		send_bytes = min(msg_bytes, pl_size);
+		partdata->num_elems = send_bytes;
+		partdata->rhdr.hdr.size = sparams->hdr_bytes + send_bytes;
+		partdata->msg_index = i;
+		msg_bytes -= send_bytes;
+		partdata->elems_remaining = msg_bytes;
+
+		if (send)
+			memcpy(sparams->dst, sparams->src + offset, send_bytes);
+
+		err = sof_ipc_tx_message_unlocked(sdev->ipc,
+						  partdata->rhdr.hdr.cmd,
+						  partdata,
+						  partdata->rhdr.hdr.size,
+						  partdata,
+						  partdata->rhdr.hdr.size);
+		if (err < 0)
+			break;
+
+		if (!send)
+			memcpy(sparams->dst + offset, sparams->src, send_bytes);
+
+		offset += pl_size;
+	}
+
+	mutex_unlock(&sdev->ipc->tx_mutex);
+
+	kfree(partdata);
+	return err;
+}
+
+/*
+ * IPC get()/set() for kcontrols.
+ */
+int snd_sof_ipc_set_get_comp_data(struct snd_sof_ipc *ipc,
+				  struct snd_sof_control *scontrol,
+				  u32 ipc_cmd,
+				  enum sof_ipc_ctrl_type ctrl_type,
+				  enum sof_ipc_ctrl_cmd ctrl_cmd,
+				  bool send)
+{
+	struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+	struct snd_sof_dev *sdev = ipc->sdev;
+	struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
+	struct sof_ipc_fw_version *v = &ready->version;
+	struct sof_ipc_ctrl_data_params sparams;
+	size_t send_bytes;
+	int err;
+
+	/* read or write firmware volume */
+	if (scontrol->readback_offset != 0) {
+		/* write/read value header via mmaped region */
+		send_bytes = sizeof(struct sof_ipc_ctrl_value_chan) *
+		cdata->num_elems;
+		if (send)
+			snd_sof_dsp_block_write(sdev, sdev->mmio_bar,
+						scontrol->readback_offset,
+						cdata->chanv, send_bytes);
+
+		else
+			snd_sof_dsp_block_read(sdev, sdev->mmio_bar,
+					       scontrol->readback_offset,
+					       cdata->chanv, send_bytes);
+		return 0;
+	}
+
+	cdata->rhdr.hdr.cmd = SOF_IPC_GLB_COMP_MSG | ipc_cmd;
+	cdata->cmd = ctrl_cmd;
+	cdata->type = ctrl_type;
+	cdata->comp_id = scontrol->comp_id;
+	cdata->msg_index = 0;
+
+	/* calculate header and data size */
+	switch (cdata->type) {
+	case SOF_CTRL_TYPE_VALUE_CHAN_GET:
+	case SOF_CTRL_TYPE_VALUE_CHAN_SET:
+		sparams.msg_bytes = scontrol->num_channels *
+			sizeof(struct sof_ipc_ctrl_value_chan);
+		sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data);
+		sparams.elems = scontrol->num_channels;
+		break;
+	case SOF_CTRL_TYPE_VALUE_COMP_GET:
+	case SOF_CTRL_TYPE_VALUE_COMP_SET:
+		sparams.msg_bytes = scontrol->num_channels *
+			sizeof(struct sof_ipc_ctrl_value_comp);
+		sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data);
+		sparams.elems = scontrol->num_channels;
+		break;
+	case SOF_CTRL_TYPE_DATA_GET:
+	case SOF_CTRL_TYPE_DATA_SET:
+		sparams.msg_bytes = cdata->data->size;
+		sparams.hdr_bytes = sizeof(struct sof_ipc_ctrl_data) +
+			sizeof(struct sof_abi_hdr);
+		sparams.elems = cdata->data->size;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	cdata->rhdr.hdr.size = sparams.msg_bytes + sparams.hdr_bytes;
+	cdata->num_elems = sparams.elems;
+	cdata->elems_remaining = 0;
+
+	/* send normal size ipc in one part */
+	if (cdata->rhdr.hdr.size <= SOF_IPC_MSG_MAX_SIZE) {
+		err = sof_ipc_tx_message(sdev->ipc, cdata->rhdr.hdr.cmd, cdata,
+					 cdata->rhdr.hdr.size, cdata,
+					 cdata->rhdr.hdr.size);
+
+		if (err < 0)
+			dev_err(sdev->dev, "error: set/get ctrl ipc comp %d\n",
+				cdata->comp_id);
+
+		return err;
+	}
+
+	/* data is bigger than max ipc size, chop into smaller pieces */
+	dev_dbg(sdev->dev, "large ipc size %u, control size %u\n",
+		cdata->rhdr.hdr.size, scontrol->size);
+
+	/* large messages is only supported from ABI 3.3.0 onwards */
+	if (v->abi_version < SOF_ABI_VER(3, 3, 0)) {
+		dev_err(sdev->dev, "error: incompatible FW ABI version\n");
+		return -EINVAL;
+	}
+
+	err = sof_set_get_large_ctrl_data(sdev, cdata, &sparams, send);
+
+	if (err < 0)
+		dev_err(sdev->dev, "error: set/get large ctrl ipc comp %d\n",
+			cdata->comp_id);
+
+	return err;
+}
+EXPORT_SYMBOL(snd_sof_ipc_set_get_comp_data);
+
+/*
+ * IPC layer enumeration.
+ */
+
+int snd_sof_dsp_mailbox_init(struct snd_sof_dev *sdev, u32 dspbox,
+			     size_t dspbox_size, u32 hostbox,
+			     size_t hostbox_size)
+{
+	sdev->dsp_box.offset = dspbox;
+	sdev->dsp_box.size = dspbox_size;
+	sdev->host_box.offset = hostbox;
+	sdev->host_box.size = hostbox_size;
+	return 0;
+}
+EXPORT_SYMBOL(snd_sof_dsp_mailbox_init);
+
+int snd_sof_ipc_valid(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
+	struct sof_ipc_fw_version *v = &ready->version;
+
+	dev_info(sdev->dev,
+		 "Firmware info: version %d:%d:%d-%s\n",  v->major, v->minor,
+		 v->micro, v->tag);
+	dev_info(sdev->dev,
+		 "Firmware: ABI %d:%d:%d Kernel ABI %d:%d:%d\n",
+		 SOF_ABI_VERSION_MAJOR(v->abi_version),
+		 SOF_ABI_VERSION_MINOR(v->abi_version),
+		 SOF_ABI_VERSION_PATCH(v->abi_version),
+		 SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH);
+
+	if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, v->abi_version)) {
+		dev_err(sdev->dev, "error: incompatible FW ABI version\n");
+		return -EINVAL;
+	}
+
+	if (v->abi_version > SOF_ABI_VERSION) {
+		if (!IS_ENABLED(CONFIG_SND_SOC_SOF_STRICT_ABI_CHECKS)) {
+			dev_warn(sdev->dev, "warn: FW ABI is more recent than kernel\n");
+		} else {
+			dev_err(sdev->dev, "error: FW ABI is more recent than kernel\n");
+			return -EINVAL;
+		}
+	}
+
+	if (ready->debug.bits.build) {
+		dev_info(sdev->dev,
+			 "Firmware debug build %d on %s-%s - options:\n"
+			 " GDB: %s\n"
+			 " lock debug: %s\n"
+			 " lock vdebug: %s\n",
+			 v->build, v->date, v->time,
+			 ready->debug.bits.gdb ? "enabled" : "disabled",
+			 ready->debug.bits.locks ? "enabled" : "disabled",
+			 ready->debug.bits.locks_verbose ? "enabled" : "disabled");
+	}
+
+	/* copy the fw_version into debugfs at first boot */
+	memcpy(&sdev->fw_version, v, sizeof(*v));
+
+	return 0;
+}
+EXPORT_SYMBOL(snd_sof_ipc_valid);
+
+struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_ipc *ipc;
+	struct snd_sof_ipc_msg *msg;
+
+	/* check if mandatory ops required for ipc are defined */
+	if (!sof_ops(sdev)->fw_ready) {
+		dev_err(sdev->dev, "error: ipc mandatory ops not defined\n");
+		return NULL;
+	}
+
+	ipc = devm_kzalloc(sdev->dev, sizeof(*ipc), GFP_KERNEL);
+	if (!ipc)
+		return NULL;
+
+	mutex_init(&ipc->tx_mutex);
+	ipc->sdev = sdev;
+	msg = &ipc->msg;
+
+	/* indicate that we aren't sending a message ATM */
+	msg->ipc_complete = true;
+
+	/* pre-allocate message data */
+	msg->msg_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE,
+				     GFP_KERNEL);
+	if (!msg->msg_data)
+		return NULL;
+
+	msg->reply_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE,
+				       GFP_KERNEL);
+	if (!msg->reply_data)
+		return NULL;
+
+	init_waitqueue_head(&msg->waitq);
+
+	return ipc;
+}
+EXPORT_SYMBOL(snd_sof_ipc_init);
+
+void snd_sof_ipc_free(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_ipc *ipc = sdev->ipc;
+
+	/* disable sending of ipc's */
+	mutex_lock(&ipc->tx_mutex);
+	ipc->disable_ipc_tx = true;
+	mutex_unlock(&ipc->tx_mutex);
+}
+EXPORT_SYMBOL(snd_sof_ipc_free);