ASoC: SOF: Implement Probe IPC API

Add all required types and methods to support each and every request
that driver could sent to firmware. Probe is one of SOF firmware
features which allows for data extraction and injection directly from
or to DMA stream.

Exposes eight IPCs:
- addition and removal of injection DMAs
- addition and removal of probe points
- info retrieval of injection DMAs and probe points
- probe initialization and cleanup

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200218143924.10565-5-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 85 insertions, 0 deletions

diff --git a/sound/soc/sof/probe.h b/sound/soc/sof/probe.h
new file mode 100644
index 000000000000..45daa5552834
--- /dev/null
+++ b/sound/soc/sof/probe.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: (GPL-2.0 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) 2019-2020 Intel Corporation. All rights reserved.
+ *
+ * Author: Cezary Rojewski <cezary.rojewski@intel.com>
+ */
+
+#ifndef __SOF_PROBE_H
+#define __SOF_PROBE_H
+
+#include <sound/sof/header.h>
+
+struct snd_sof_dev;
+
+#define SOF_PROBE_INVALID_NODE_ID UINT_MAX
+
+struct sof_probe_dma {
+	unsigned int stream_tag;
+	unsigned int dma_buffer_size;
+} __packed;
+
+enum sof_connection_purpose {
+	SOF_CONNECTION_PURPOSE_EXTRACT = 1,
+	SOF_CONNECTION_PURPOSE_INJECT,
+};
+
+struct sof_probe_point_desc {
+	unsigned int buffer_id;
+	unsigned int purpose;
+	unsigned int stream_tag;
+} __packed;
+
+struct sof_ipc_probe_dma_add_params {
+	struct sof_ipc_cmd_hdr hdr;
+	unsigned int num_elems;
+	struct sof_probe_dma dma[0];
+} __packed;
+
+struct sof_ipc_probe_info_params {
+	struct sof_ipc_reply rhdr;
+	unsigned int num_elems;
+	union {
+		struct sof_probe_dma dma[0];
+		struct sof_probe_point_desc desc[0];
+	};
+} __packed;
+
+struct sof_ipc_probe_dma_remove_params {
+	struct sof_ipc_cmd_hdr hdr;
+	unsigned int num_elems;
+	unsigned int stream_tag[0];
+} __packed;
+
+struct sof_ipc_probe_point_add_params {
+	struct sof_ipc_cmd_hdr hdr;
+	unsigned int num_elems;
+	struct sof_probe_point_desc desc[0];
+} __packed;
+
+struct sof_ipc_probe_point_remove_params {
+	struct sof_ipc_cmd_hdr hdr;
+	unsigned int num_elems;
+	unsigned int buffer_id[0];
+} __packed;
+
+int sof_ipc_probe_init(struct snd_sof_dev *sdev,
+		u32 stream_tag, size_t buffer_size);
+int sof_ipc_probe_deinit(struct snd_sof_dev *sdev);
+int sof_ipc_probe_dma_info(struct snd_sof_dev *sdev,
+		struct sof_probe_dma **dma, size_t *num_dma);
+int sof_ipc_probe_dma_add(struct snd_sof_dev *sdev,
+		struct sof_probe_dma *dma, size_t num_dma);
+int sof_ipc_probe_dma_remove(struct snd_sof_dev *sdev,
+		unsigned int *stream_tag, size_t num_stream_tag);
+int sof_ipc_probe_points_info(struct snd_sof_dev *sdev,
+		struct sof_probe_point_desc **desc, size_t *num_desc);
+int sof_ipc_probe_points_add(struct snd_sof_dev *sdev,
+		struct sof_probe_point_desc *desc, size_t num_desc);
+int sof_ipc_probe_points_remove(struct snd_sof_dev *sdev,
+		unsigned int *buffer_id, size_t num_buffer_id);
+
+#endif