ASoC: SOF: send time stamp to FW for alignment

Timer will be reset when DSP is powered down. So the time stamp of trace
log will be reset after resume. Send time stamp to FW can align the time
stamp and avoid reset time stamp in trace log.
Signed-off-by: Bard liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/sof/header.h

@@ -102,6 +102,7 @@
 /* trace and debug */
 #define SOF_IPC_TRACE_DMA_PARAMS		SOF_CMD_TYPE(0x001)
 #define SOF_IPC_TRACE_DMA_POSITION		SOF_CMD_TYPE(0x002)
+#define SOF_IPC_TRACE_DMA_PARAMS_EXT		SOF_CMD_TYPE(0x003)
 
 /* Get message component id */
 #define SOF_IPC_MESSAGE_ID(x)			((x) & 0xffff)

include/sound/sof/trace.h

@@ -19,12 +19,22 @@
 #define SOF_TRACE_FILENAME_SIZE		32
 
 /* DMA for Trace params info - SOF_IPC_DEBUG_DMA_PARAMS */
+/* Deprecated - use sof_ipc_dma_trace_params_ext */
 struct sof_ipc_dma_trace_params {
 	struct sof_ipc_cmd_hdr hdr;
 	struct sof_ipc_host_buffer buffer;
 	uint32_t stream_tag;
 }  __packed;
 
+/* DMA for Trace params info - SOF_IPC_DEBUG_DMA_PARAMS_EXT */
+struct sof_ipc_dma_trace_params_ext {
+	struct sof_ipc_cmd_hdr hdr;
+	struct sof_ipc_host_buffer buffer;
+	uint32_t stream_tag;
+	uint64_t timestamp_ns; /* in nanosecond */
+	uint32_t reserved[8];
+}  __packed;
+
 /* DMA for Trace params info - SOF_IPC_DEBUG_DMA_PARAMS */
 struct sof_ipc_dma_trace_posn {
 	struct sof_ipc_reply rhdr;

include/uapi/sound/sof/abi.h

@@ -26,7 +26,7 @@
 
 /* SOF ABI version major, minor and patch numbers */
 #define SOF_ABI_MAJOR 3
-#define SOF_ABI_MINOR 6
+#define SOF_ABI_MINOR 7
 #define SOF_ABI_PATCH 0
 
 /* SOF ABI version number. Format within 32bit word is MMmmmppp */

sound/soc/sof/trace.c

@@ -161,7 +161,9 @@ static int trace_debugfs_create(struct snd_sof_dev *sdev)
 
 int snd_sof_init_trace_ipc(struct snd_sof_dev *sdev)
 {
-	struct sof_ipc_dma_trace_params params;
+	struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
+	struct sof_ipc_fw_version *v = &ready->version;
+	struct sof_ipc_dma_trace_params_ext params;
 	struct sof_ipc_reply ipc_reply;
 	int ret;
 
@@ -169,8 +171,16 @@ int snd_sof_init_trace_ipc(struct snd_sof_dev *sdev)
 		return -EINVAL;
 
 	/* set IPC parameters */
-	params.hdr.size = sizeof(params);
-	params.hdr.cmd = SOF_IPC_GLB_TRACE_MSG | SOF_IPC_TRACE_DMA_PARAMS;
+	params.hdr.cmd = SOF_IPC_GLB_TRACE_MSG;
+	/* PARAMS_EXT is only supported from ABI 3.7.0 onwards */
+	if (v->abi_version >= SOF_ABI_VER(3, 7, 0)) {
+		params.hdr.size = sizeof(struct sof_ipc_dma_trace_params_ext);
+		params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS_EXT;
+		params.timestamp_ns = ktime_get(); /* in nanosecond */
+	} else {
+		params.hdr.size = sizeof(struct sof_ipc_dma_trace_params);
+		params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS;
+	}
 	params.buffer.phy_addr = sdev->dmatp.addr;
 	params.buffer.size = sdev->dmatb.bytes;
 	params.buffer.pages = sdev->dma_trace_pages;