sof/amd/acp-trace.c

0001 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
0002 //
0003 // This file is provided under a dual BSD/GPLv2 license.  When using or
0004 // redistributing this file, you may do so under either license.
0005 //
0006 // Copyright(c) 2021 Advanced Micro Devices, Inc. All rights reserved.
0007 //
0008 // Authors: Vishnuvardhanrao Ravuapati <vishnuvardhanrao.ravulapati@amd.com>
0009 //      V Sujith Kumar Reddy <Vsujithkumar.Reddy@amd.com>
0010
0011 /*This file support Host TRACE Logger driver callback for SOF FW */
0012
0013 #include "acp.h"
0014
0015 #define ACP_LOGGER_STREAM   8
0016 #define NUM_PAGES       16
0017
0018 int acp_sof_trace_release(struct snd_sof_dev *sdev)
0019 {
0020     struct acp_dsp_stream *stream;
0021     struct acp_dev_data *adata;
0022     int ret;
0023
0024     adata = sdev->pdata->hw_pdata;
0025     stream = adata->dtrace_stream;
0026     ret = acp_dsp_stream_put(sdev, stream);
0027     if (ret < 0) {
0028         dev_err(sdev->dev, "Failed to release trace stream\n");
0029         return ret;
0030     }
0031
0032     adata->dtrace_stream = NULL;
0033     return 0;
0034 }
0035 EXPORT_SYMBOL_NS(acp_sof_trace_release, SND_SOC_SOF_AMD_COMMON);
0036
0037 int acp_sof_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
0038                struct sof_ipc_dma_trace_params_ext *dtrace_params)
0039 {
0040     struct acp_dsp_stream *stream;
0041     struct acp_dev_data *adata;
0042     int ret;
0043
0044     adata = sdev->pdata->hw_pdata;
0045     stream = acp_dsp_stream_get(sdev, ACP_LOGGER_STREAM);
0046     if (!stream)
0047         return -ENODEV;
0048
0049     stream->dmab = dmab;
0050     stream->num_pages = NUM_PAGES;
0051
0052     ret = acp_dsp_stream_config(sdev, stream);
0053     if (ret < 0) {
0054         acp_dsp_stream_put(sdev, stream);
0055         return ret;
0056     }
0057
0058     adata->dtrace_stream = stream;
0059     dtrace_params->stream_tag = stream->stream_tag;
0060     dtrace_params->buffer.phy_addr = stream->reg_offset;
0061
0062     return 0;
0063 }
0064 EXPORT_SYMBOL_NS(acp_sof_trace_init, SND_SOC_SOF_AMD_COMMON);