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

   1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
   2 //
   3 // This file is provided under a dual BSD/GPLv2 license.  When using or
   4 // redistributing this file, you may do so under either license.
   5 //
   6 // Copyright(c) 2021 Advanced Micro Devices, Inc. All rights reserved.
   7 //
   8 // Authors: Vishnuvardhanrao Ravuapati <vishnuvardhanrao.ravulapati@amd.com>
   9 //          V Sujith Kumar Reddy <Vsujithkumar.Reddy@amd.com>
  10
  11 /*This file support Host TRACE Logger driver callback for SOF FW */
  12
  13 #include "acp.h"
  14
  15 #define ACP_LOGGER_STREAM       8
  16 #define NUM_PAGES               16
  17
  18 int acp_sof_trace_release(struct snd_sof_dev *sdev)
  19 {
  20         struct acp_dsp_stream *stream;
  21         struct acp_dev_data *adata;
  22         int ret;
  23
  24         adata = sdev->pdata->hw_pdata;
  25         stream = adata->dtrace_stream;
  26         ret = acp_dsp_stream_put(sdev, stream);
  27         if (ret < 0) {
  28                 dev_err(sdev->dev, "Failed to release trace stream\n");
  29                 return ret;
  30         }
  31
  32         adata->dtrace_stream = NULL;
  33         return 0;
  34 }
  35 EXPORT_SYMBOL_NS(acp_sof_trace_release, "SND_SOC_SOF_AMD_COMMON");
  36
  37 int acp_sof_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
  38                        struct sof_ipc_dma_trace_params_ext *dtrace_params)
  39 {
  40         struct acp_dsp_stream *stream;
  41         struct acp_dev_data *adata;
  42         int ret;
  43
  44         adata = sdev->pdata->hw_pdata;
  45         stream = acp_dsp_stream_get(sdev, ACP_LOGGER_STREAM);
  46         if (!stream)
  47                 return -ENODEV;
  48
  49         stream->dmab = dmab;
  50         stream->num_pages = NUM_PAGES;
  51
  52         ret = acp_dsp_stream_config(sdev, stream);
  53         if (ret < 0) {
  54                 acp_dsp_stream_put(sdev, stream);
  55                 return ret;
  56         }
  57
  58         adata->dtrace_stream = stream;
  59         dtrace_params->stream_tag = stream->stream_tag;
  60         dtrace_params->buffer.phy_addr = stream->reg_offset;
  61
  62         return 0;
  63 }
  64 EXPORT_SYMBOL_NS(acp_sof_trace_init, "SND_SOC_SOF_AMD_COMMON");