ASoC: SOF: amd: Add trace logger support

Add trace support and configure trace stream for ACP firmware.

Signed-off-by: Vishnuvardhanrao Ravuapati <vishnuvardhanrao.ravulapati@amd.com>
Signed-off-by: V sujith kumar Reddy <vsreddy@amd.com>

sound/soc/sof/amd/Makefile

@@ -4,7 +4,7 @@
 #
 # Copyright(c) 2021 Advanced Micro Devices, Inc. All rights reserved.
 
-snd-sof-amd-acp-objs := acp.o acp-loader.o acp-ipc.o acp-pcm.o acp-stream.o
+snd-sof-amd-acp-objs := acp.o acp-loader.o acp-ipc.o acp-pcm.o acp-stream.o acp-trace.o
 snd-sof-amd-renoir-objs := pci-rn.o renoir.o
 
 obj-$(CONFIG_SND_SOC_SOF_AMD_COMMON) += snd-sof-amd-acp.o

sound/soc/sof/amd/acp-trace.c

@@ -0,0 +1,84 @@
+// 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) 2021 Advanced Micro Devices, Inc. All rights reserved.
+//
+// Authors: Vishnuvardhanrao Ravuapati <vishnuvardhanrao.ravulapati@amd.com>
+//	    V Sujith Kumar Reddy <Vsujithkumar.Reddy@amd.com>
+
+/*This file support Host TRACE Logger driver callback for SOF FW */
+
+#include "acp.h"
+
+#define ACP_LOGGER_STREAM	8
+#define NUM_PAGES		16
+
+int acp_sof_trace_release(struct snd_sof_dev *sdev)
+{
+	struct acp_dsp_stream *stream;
+	struct acp_dev_data *adata;
+	int ret;
+
+	adata = sdev->pdata->hw_pdata;
+	stream = adata->dtrace_stream;
+	ret = acp_dsp_stream_put(sdev, stream);
+	if (ret < 0) {
+		dev_err(sdev->dev, "Failed to release trace stream\n");
+		return ret;
+	}
+
+	adata->dtrace_stream = NULL;
+	return 0;
+}
+EXPORT_SYMBOL_NS(acp_sof_trace_release, SND_SOC_SOF_AMD_COMMON);
+
+static int acp_sof_trace_prepare(struct snd_sof_dev *sdev,
+				 struct sof_ipc_dma_trace_params_ext *params)
+{
+	struct acp_dsp_stream *stream;
+	struct acp_dev_data *adata;
+	int ret;
+
+	adata = sdev->pdata->hw_pdata;
+	stream = adata->dtrace_stream;
+	stream->dmab = &sdev->dmatb;
+	stream->num_pages = NUM_PAGES;
+
+	ret = acp_dsp_stream_config(sdev, stream);
+	if (ret < 0) {
+		dev_err(sdev->dev, "Failed to configure trace stream\n");
+		return ret;
+	}
+
+	params->buffer.phy_addr = stream->reg_offset;
+	params->stream_tag = stream->stream_tag;
+
+	return 0;
+}
+
+int acp_sof_trace_init(struct snd_sof_dev *sdev, u32 *stream_tag)
+{
+	struct sof_ipc_dma_trace_params_ext *params;
+	struct acp_dsp_stream *stream;
+	struct acp_dev_data *adata;
+	int ret;
+
+	adata = sdev->pdata->hw_pdata;
+	stream = acp_dsp_stream_get(sdev, ACP_LOGGER_STREAM);
+	if (!stream)
+		return -ENODEV;
+
+	adata->dtrace_stream = stream;
+	params = container_of(stream_tag, struct sof_ipc_dma_trace_params_ext, stream_tag);
+	ret = acp_sof_trace_prepare(sdev, params);
+	if (ret < 0) {
+		acp_dsp_stream_put(sdev, stream);
+		return ret;
+	}
+
+	*stream_tag = stream->stream_tag;
+	return 0;
+}
+EXPORT_SYMBOL_NS(acp_sof_trace_init, SND_SOC_SOF_AMD_COMMON);

sound/soc/sof/amd/acp.h

@@ -140,6 +140,7 @@ struct acp_dev_data {
 	u8 *data_buf;
 	struct dma_descriptor dscr_info[ACP_MAX_DESC];
 	struct acp_dsp_stream stream_buf[ACP_MAX_STREAM];
+	struct acp_dsp_stream *dtrace_stream;
 };
 
 void memcpy_to_scratch(struct snd_sof_dev *sdev, u32 offset, unsigned int *src, size_t bytes);
@@ -198,4 +199,8 @@ extern const struct snd_sof_dsp_ops sof_renoir_ops;
 
 /* Machine configuration */
 int snd_amd_acp_find_config(struct pci_dev *pci);
+
+/* Trace */
+int acp_sof_trace_init(struct snd_sof_dev *sdev, u32 *stream_tag);
+int acp_sof_trace_release(struct snd_sof_dev *sdev);
 #endif

sound/soc/sof/amd/renoir.c

@@ -173,6 +173,10 @@ const struct snd_sof_dsp_ops sof_renoir_ops = {
 	.machine_select		= amd_sof_machine_select,
 	.machine_register	= sof_machine_register,
 	.machine_unregister	= sof_machine_unregister,
+
+	/* Trace Logger */
+	.trace_init		= acp_sof_trace_init,
+	.trace_release		= acp_sof_trace_release,
 };
 EXPORT_SYMBOL(sof_renoir_ops);