10 // Generic IPC layer that can work over MMIO and SPI/I2C. PHY layer provided
25  * IPC message Tx/Rx message handling.
28 /* SOF generic IPC data */
34 	/* disables further sending of ipc's */
205 /* wait for IPC message reply */
206 static int tx_wait_done(struct snd_sof_ipc *ipc, struct snd_sof_ipc_msg *msg,  in tx_wait_done()  argument
209 	struct snd_sof_dev *sdev = ipc->sdev;  in tx_wait_done()
213 	/* wait for DSP IPC completion */  in tx_wait_done()
218 		dev_err(sdev->dev, "error: ipc timed out for 0x%x size %d\n",  in tx_wait_done()
220 		snd_sof_handle_fw_exception(ipc->sdev);  in tx_wait_done()
225 			dev_err(sdev->dev, "error: ipc error for 0x%x size %zu\n",  in tx_wait_done()
228 			ipc_log_header(sdev->dev, "ipc tx succeeded", hdr->cmd);  in tx_wait_done()
239 /* send IPC message from host to DSP */
240 static int sof_ipc_tx_message_unlocked(struct snd_sof_ipc *ipc, u32 header,  in sof_ipc_tx_message_unlocked()  argument
244 	struct snd_sof_dev *sdev = ipc->sdev;  in sof_ipc_tx_message_unlocked()
248 	if (ipc->disable_ipc_tx)  in sof_ipc_tx_message_unlocked()
258 	msg = &ipc->msg;  in sof_ipc_tx_message_unlocked()
280 				    "error: ipc tx failed with error %d\n",  in sof_ipc_tx_message_unlocked()
285 	ipc_log_header(sdev->dev, "ipc tx", msg->header);  in sof_ipc_tx_message_unlocked()
289 		ret = tx_wait_done(ipc, msg, reply_data);  in sof_ipc_tx_message_unlocked()
294 /* send IPC message from host to DSP */
295 int sof_ipc_tx_message(struct snd_sof_ipc *ipc, u32 header,  in sof_ipc_tx_message()  argument
304 	/* ensure the DSP is in D0 before sending a new IPC */  in sof_ipc_tx_message()
305 	ret = snd_sof_dsp_set_power_state(ipc->sdev, &target_state);  in sof_ipc_tx_message()
307 		dev_err(ipc->sdev->dev, "error: resuming DSP %d\n", ret);  in sof_ipc_tx_message()
311 	return sof_ipc_tx_message_no_pm(ipc, header, msg_data, msg_bytes,  in sof_ipc_tx_message()
317  * send IPC message from host to DSP without modifying the DSP state.
318  * This will be used for IPC's that can be handled by the DSP
321 int sof_ipc_tx_message_no_pm(struct snd_sof_ipc *ipc, u32 header,  in sof_ipc_tx_message_no_pm()  argument
331 	/* Serialise IPC TX */  in sof_ipc_tx_message_no_pm()
332 	mutex_lock(&ipc->tx_mutex);  in sof_ipc_tx_message_no_pm()
334 	ret = sof_ipc_tx_message_unlocked(ipc, header, msg_data, msg_bytes,  in sof_ipc_tx_message_no_pm()
337 	mutex_unlock(&ipc->tx_mutex);  in sof_ipc_tx_message_no_pm()
346 	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;  in snd_sof_ipc_reply()
370 	ipc_log_header(sdev->dev, "ipc rx", hdr.cmd);  in snd_sof_ipc_msgs_rx()
378 		dev_err(sdev->dev, "error: ipc reply unknown\n");  in snd_sof_ipc_msgs_rx()
410 	ipc_log_header(sdev->dev, "ipc rx done", hdr.cmd);  in snd_sof_ipc_msgs_rx()
415  * IPC trace mechanism.
436  * IPC stream position.
518 /* get stream position IPC - use faster MMIO method if available on platform */
527 	/* read position via slower IPC */  in snd_sof_ipc_stream_posn()
532 	/* send IPC to the DSP */  in snd_sof_ipc_stream_posn()
533 	err = sof_ipc_tx_message(sdev->ipc,  in snd_sof_ipc_stream_posn()
591 	/* allocate max ipc size because we have at least one */  in sof_set_get_large_ctrl_data()
613 	/* Serialise IPC TX */  in sof_set_get_large_ctrl_data()
614 	mutex_lock(&sdev->ipc->tx_mutex);  in sof_set_get_large_ctrl_data()
628 		err = sof_ipc_tx_message_unlocked(sdev->ipc,  in sof_set_get_large_ctrl_data()
643 	mutex_unlock(&sdev->ipc->tx_mutex);  in sof_set_get_large_ctrl_data()
650  * IPC get()/set() for kcontrols.
721 	/* send normal size ipc in one part */  in snd_sof_ipc_set_get_comp_data()
723 		err = sof_ipc_tx_message(sdev->ipc, cdata->rhdr.hdr.cmd, cdata,  in snd_sof_ipc_set_get_comp_data()
728 			dev_err(sdev->dev, "error: set/get ctrl ipc comp %d\n",  in snd_sof_ipc_set_get_comp_data()
734 	/* data is bigger than max ipc size, chop into smaller pieces */  in snd_sof_ipc_set_get_comp_data()
735 	dev_dbg(sdev->dev, "large ipc size %u, control size %u\n",  in snd_sof_ipc_set_get_comp_data()
747 		dev_err(sdev->dev, "error: set/get large ctrl ipc comp %d\n",  in snd_sof_ipc_set_get_comp_data()
755  * IPC layer enumeration.
823 	struct snd_sof_ipc *ipc;  in snd_sof_ipc_init()  local
826 	ipc = devm_kzalloc(sdev->dev, sizeof(*ipc), GFP_KERNEL);  in snd_sof_ipc_init()
827 	if (!ipc)  in snd_sof_ipc_init()
830 	mutex_init(&ipc->tx_mutex);  in snd_sof_ipc_init()
831 	ipc->sdev = sdev;  in snd_sof_ipc_init()
832 	msg = &ipc->msg;  in snd_sof_ipc_init()
850 	return ipc;  in snd_sof_ipc_init()
856 	struct snd_sof_ipc *ipc = sdev->ipc;  in snd_sof_ipc_free()  local
858 	if (!ipc)  in snd_sof_ipc_free()
861 	/* disable sending of ipc's */  in snd_sof_ipc_free()
862 	mutex_lock(&ipc->tx_mutex);  in snd_sof_ipc_free()
863 	ipc->disable_ipc_tx = true;  in snd_sof_ipc_free()
864 	mutex_unlock(&ipc->tx_mutex);  in snd_sof_ipc_free()