ASoC: SOF: Modify the host trace_init parameter list to include dmab

Stop host code (AMD, Intel) to access sdev->dmatb directly.
Modify the trace_init prototype to include the pointer to a
struct snd_dma_buffer. The ipc3-dtrace passes for now the pointer to
sdev->dmatb, but the aim is to move all tracing related runtime information
local to a trace implementation.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220516104711.26115-7-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

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

@@ -34,7 +34,7 @@ int acp_sof_trace_release(struct snd_sof_dev *sdev)
 }
 EXPORT_SYMBOL_NS(acp_sof_trace_release, SND_SOC_SOF_AMD_COMMON);
 
-int acp_sof_trace_init(struct snd_sof_dev *sdev,
+int acp_sof_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
 		       struct sof_ipc_dma_trace_params_ext *dtrace_params)
 {
 	struct acp_dsp_stream *stream;
@@ -46,7 +46,7 @@ int acp_sof_trace_init(struct snd_sof_dev *sdev,
 	if (!stream)
 		return -ENODEV;
 
-	stream->dmab = &sdev->dmatb;
+	stream->dmab = dmab;
 	stream->num_pages = NUM_PAGES;
 
 	ret = acp_dsp_stream_config(sdev, stream);

sound/soc/sof/amd/acp.h

@@ -212,7 +212,7 @@ extern struct snd_sof_dsp_ops sof_renoir_ops;
 int snd_amd_acp_find_config(struct pci_dev *pci);
 
 /* Trace */
-int acp_sof_trace_init(struct snd_sof_dev *sdev,
+int acp_sof_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
 		       struct sof_ipc_dma_trace_params_ext *dtrace_params);
 int acp_sof_trace_release(struct snd_sof_dev *sdev);
 

sound/soc/sof/intel/hda-trace.c

@@ -36,7 +36,7 @@ static int hda_dsp_trace_prepare(struct snd_sof_dev *sdev, struct snd_dma_buffer
 	return ret;
 }
 
-int hda_dsp_trace_init(struct snd_sof_dev *sdev,
+int hda_dsp_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
 		       struct sof_ipc_dma_trace_params_ext *dtrace_params)
 {
 	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
@@ -57,7 +57,7 @@ int hda_dsp_trace_init(struct snd_sof_dev *sdev,
 	 * initialize capture stream, set BDL address and return corresponding
 	 * stream tag which will be sent to the firmware by IPC message.
 	 */
-	ret = hda_dsp_trace_prepare(sdev, &sdev->dmatb);
+	ret = hda_dsp_trace_prepare(sdev, dmab);
 	if (ret < 0) {
 		dev_err(sdev->dev, "error: hdac trace init failed: %d\n", ret);
 		hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_CAPTURE,

sound/soc/sof/intel/hda.h

@@ -658,7 +658,7 @@ static inline int hda_codec_i915_exit(struct snd_sof_dev *sdev) { return 0; }
 /*
  * Trace Control.
  */
-int hda_dsp_trace_init(struct snd_sof_dev *sdev,
+int hda_dsp_trace_init(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
 		       struct sof_ipc_dma_trace_params_ext *dtrace_params);
 int hda_dsp_trace_release(struct snd_sof_dev *sdev);
 int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd);

sound/soc/sof/ipc3-dtrace.c

@@ -412,7 +412,7 @@ static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
 	sdev->host_offset = 0;
 	sdev->dtrace_draining = false;
 
-	ret = sof_dtrace_host_init(sdev, &params);
+	ret = sof_dtrace_host_init(sdev, &sdev->dmatb, &params);
 	if (ret < 0) {
 		dev_err(sdev->dev, "Host dtrace init failed: %d\n", ret);
 		return ret;

sound/soc/sof/ipc3-priv.h

@@ -31,12 +31,13 @@ int ipc3_dtrace_posn_update(struct snd_sof_dev *sdev,
 
 /* dtrace platform callback wrappers */
 static inline int sof_dtrace_host_init(struct snd_sof_dev *sdev,
+				       struct snd_dma_buffer *dmatb,
 				       struct sof_ipc_dma_trace_params_ext *dtrace_params)
 {
 	struct snd_sof_dsp_ops *dsp_ops = sdev->pdata->desc->ops;
 
 	if (dsp_ops->trace_init)
-		return dsp_ops->trace_init(sdev, dtrace_params);
+		return dsp_ops->trace_init(sdev, dmatb, dtrace_params);
 
 	return 0;
 }

sound/soc/sof/sof-priv.h

@@ -254,8 +254,9 @@ struct snd_sof_dsp_ops {
 				       size_t size, const char *name,
 				       enum sof_debugfs_access_type access_type); /* optional */
 
-	/* host DMA trace initialization */
+	/* host DMA trace (IPC3) */
 	int (*trace_init)(struct snd_sof_dev *sdev,
+			  struct snd_dma_buffer *dmatb,
 			  struct sof_ipc_dma_trace_params_ext *dtrace_params); /* optional */
 	int (*trace_release)(struct snd_sof_dev *sdev); /* optional */
 	int (*trace_trigger)(struct snd_sof_dev *sdev,