1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
15  * Hardware interface for generic Intel audio DSP HDA IP
24 	 * tell DSP cmd is done - clear busy  in hda_dsp_ipc_host_done()
25 	 * interrupt and send reply msg to dsp  in hda_dsp_ipc_host_done()
42 	 * set DONE bit - tell DSP we have received the reply msg  in hda_dsp_ipc_dsp_done()
43 	 * from DSP, and processed it, don't send more reply to host  in hda_dsp_ipc_dsp_done()
59 	/* send IPC message to DSP */  in hda_dsp_ipc_send_msg()
60 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,  in hda_dsp_ipc_send_msg()
61 			  msg->msg_size);  in hda_dsp_ipc_send_msg()
70 	struct snd_sof_ipc_msg *msg = sdev->msg;  in hda_dsp_ipc_get_reply()
81 		dev_warn(sdev->dev, "unexpected ipc interrupt raised!\n");  in hda_dsp_ipc_get_reply()
85 	hdr = msg->msg_data;  in hda_dsp_ipc_get_reply()
86 	if (hdr->cmd == (SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_CTX_SAVE) ||  in hda_dsp_ipc_get_reply()
87 	    hdr->cmd == (SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_GATE)) {  in hda_dsp_ipc_get_reply()
96 		memcpy(msg->reply_data, &reply, sizeof(reply));  in hda_dsp_ipc_get_reply()
100 	/* get IPC reply from DSP in the mailbox */  in hda_dsp_ipc_get_reply()
101 	sof_mailbox_read(sdev, sdev->host_box.offset, &reply,  in hda_dsp_ipc_get_reply()
105 		memcpy(msg->reply_data, &reply, sizeof(reply));  in hda_dsp_ipc_get_reply()
109 		if (reply.hdr.size != msg->reply_size &&  in hda_dsp_ipc_get_reply()
112 			dev_err(sdev->dev, "error: reply expected %zu got %u bytes\n",  in hda_dsp_ipc_get_reply()
113 				msg->reply_size, reply.hdr.size);  in hda_dsp_ipc_get_reply()
114 			ret = -EINVAL;  in hda_dsp_ipc_get_reply()
118 		if (msg->reply_size > 0)  in hda_dsp_ipc_get_reply()
119 			sof_mailbox_read(sdev, sdev->host_box.offset,  in hda_dsp_ipc_get_reply()
120 					 msg->reply_data, msg->reply_size);  in hda_dsp_ipc_get_reply()
124 	msg->reply_error = ret;  in hda_dsp_ipc_get_reply()
129 irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)  in hda_dsp_ipc_irq_thread()  argument
147 	/* is this a reply message from the DSP */  in hda_dsp_ipc_irq_thread()
152 		dev_vdbg(sdev->dev,  in hda_dsp_ipc_irq_thread()
163 		 * waking up the sender and re-enabling the interrupt. Also  in hda_dsp_ipc_irq_thread()
165 		 * if the DSP is fast enough to receive an IPC message, reply to  in hda_dsp_ipc_irq_thread()
171 		spin_lock_irq(&sdev->ipc_lock);  in hda_dsp_ipc_irq_thread()
173 		/* handle immediate reply from DSP core */  in hda_dsp_ipc_irq_thread()
180 		spin_unlock_irq(&sdev->ipc_lock);  in hda_dsp_ipc_irq_thread()
185 	/* is this a new message from DSP */  in hda_dsp_ipc_irq_thread()
190 		dev_vdbg(sdev->dev,  in hda_dsp_ipc_irq_thread()
199 		/* handle messages from DSP */  in hda_dsp_ipc_irq_thread()
204 			/* normal message - process normally */  in hda_dsp_ipc_irq_thread()
217 		dev_dbg_ratelimited(sdev->dev,  in hda_dsp_ipc_irq_thread()
218 				    "nothing to do in IPC IRQ thread\n");  in hda_dsp_ipc_irq_thread()
224 /* Check if an IPC IRQ occurred */
232 	dev_vdbg(sdev->dev, "irq handler: irq_status:0x%x\n", irq_status);  in hda_dsp_check_ipc_irq()
260 	if (!substream || !sdev->stream_box.size) {  in hda_ipc_msg_data()
261 		sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz);  in hda_ipc_msg_data()
263 		struct hdac_stream *hstream = substream->runtime->private_data;  in hda_ipc_msg_data()
272 			sof_mailbox_read(sdev, hda_stream->stream.posn_offset,  in hda_ipc_msg_data()
281 	struct hdac_stream *hstream = substream->runtime->private_data;  in hda_ipc_pcm_params()
284 	size_t posn_offset = reply->posn_offset;  in hda_ipc_pcm_params()
290 	if (posn_offset > sdev->stream_box.size ||  in hda_ipc_pcm_params()
292 		return -EINVAL;  in hda_ipc_pcm_params()
294 	hda_stream->stream.posn_offset = sdev->stream_box.offset + posn_offset;  in hda_ipc_pcm_params()
296 	dev_dbg(sdev->dev, "pcm: stream dir %d, posn mailbox offset is %zu",  in hda_ipc_pcm_params()
297 		substream->stream, hda_stream->stream.posn_offset);  in hda_ipc_pcm_params()