ASoC: SOF: IPC4: probes: Implement IPC4 ops for probes client device

Implement IPC operations for IPC4 messaging and add doxygen
documentation for the functions.
Signed-off-by: Jyri Sarha <jyri.sarha@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20221031105141.19037-6-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/Makefile

@@ -26,7 +26,13 @@ snd-sof-of-objs := sof-of-dev.o
 
 snd-sof-ipc-flood-test-objs := sof-client-ipc-flood-test.o
 snd-sof-ipc-msg-injector-objs := sof-client-ipc-msg-injector.o
-snd-sof-probes-objs := sof-client-probes.o sof-client-probes-ipc3.o
+snd-sof-probes-objs := sof-client-probes.o
+ifneq ($(CONFIG_SND_SOC_SOF_IPC3),)
+snd-sof-probes-objs += sof-client-probes-ipc3.o
+endif
+ifneq ($(CONFIG_SND_SOC_SOF_INTEL_IPC4),)
+snd-sof-probes-objs += sof-client-probes-ipc4.o
+endif
 
 snd-sof-nocodec-objs := nocodec.o
 

sound/soc/sof/sof-client-probes-ipc4.c

+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2019-2022 Intel Corporation. All rights reserved.
+//
+// Author: Jyri Sarha <jyri.sarha@intel.com>
+//
+
+#include <sound/soc.h>
+#include <sound/sof/ipc4/header.h>
+#include <uapi/sound/sof/header.h>
+#include "sof-priv.h"
+#include "ipc4-priv.h"
+#include "sof-client.h"
+#include "sof-client-probes.h"
+
+enum sof_ipc4_dma_type {
+	SOF_IPC4_DMA_HDA_HOST_OUTPUT = 0,
+	SOF_IPC4_DMA_HDA_HOST_INPUT = 1,
+	SOF_IPC4_DMA_HDA_LINK_OUTPUT = 8,
+	SOF_IPC4_DMA_HDA_LINK_INPUT = 9,
+	SOF_IPC4_DMA_DMIC_LINK_INPUT = 11,
+	SOF_IPC4_DMA_I2S_LINK_OUTPUT = 12,
+	SOF_IPC4_DMA_I2S_LINK_INPUT = 13,
+};
+
+enum sof_ipc4_probe_runtime_param {
+	SOF_IPC4_PROBE_INJECTION_DMA = 1,
+	SOF_IPC4_PROBE_INJECTION_DMA_DETACH,
+	SOF_IPC4_PROBE_POINTS,
+	SOF_IPC4_PROBE_POINTS_DISCONNECT,
+};
+
+struct sof_ipc4_probe_gtw_cfg {
+	u32 node_id;
+	u32 dma_buffer_size;
+} __packed __aligned(4);
+
+#define SOF_IPC4_PROBE_NODE_ID_INDEX(x)		((x) & GENMASK(7, 0))
+#define SOF_IPC4_PROBE_NODE_ID_TYPE(x)		(((x) << 8) & GENMASK(12, 8))
+
+struct sof_ipc4_probe_cfg {
+	struct sof_ipc4_base_module_cfg base;
+	struct sof_ipc4_probe_gtw_cfg gtw_cfg;
+} __packed __aligned(4);
+
+enum sof_ipc4_probe_type {
+	SOF_IPC4_PROBE_TYPE_INPUT = 0,
+	SOF_IPC4_PROBE_TYPE_OUTPUT,
+	SOF_IPC4_PROBE_TYPE_INTERNAL
+};
+
+struct sof_ipc4_probe_point {
+	u32 point_id;
+	u32 purpose;
+	u32 stream_tag;
+} __packed __aligned(4);
+
+#define INVALID_PIPELINE_ID      0xFF
+
+/**
+ * sof_ipc4_probe_get_module_info - Get IPC4 module info for probe module
+ * @cdev:		SOF client device
+ * @return:		Pointer to IPC4 probe module info
+ *
+ * Look up the IPC4 probe module info based on the hard coded uuid and
+ * store the value for the future calls.
+ */
+static struct sof_man4_module *sof_ipc4_probe_get_module_info(struct sof_client_dev *cdev)
+{
+	struct sof_probes_priv *priv = cdev->data;
+	struct device *dev = &cdev->auxdev.dev;
+	static const guid_t probe_uuid =
+		GUID_INIT(0x7CAD0808, 0xAB10, 0xCD23,
+			  0xEF, 0x45, 0x12, 0xAB, 0x34, 0xCD, 0x56, 0xEF);
+
+	if (!priv->ipc_priv) {
+		struct sof_ipc4_fw_module *fw_module =
+			sof_client_ipc4_find_module(cdev, &probe_uuid);
+
+		if (!fw_module) {
+			dev_err(dev, "%s: no matching uuid found", __func__);
+			return NULL;
+		}
+
+		priv->ipc_priv = &fw_module->man4_module_entry;
+	}
+
+	return (struct sof_man4_module *)priv->ipc_priv;
+}
+
+/**
+ * ipc4_probes_init - initialize data probing
+ * @cdev:		SOF client device
+ * @stream_tag:		Extractor stream tag
+ * @buffer_size:	DMA buffer size to set for extractor
+ * @return:		0 on success, negative error code on error
+ *
+ * Host chooses whether extraction is supported or not by providing
+ * valid stream tag to DSP. Once specified, stream described by that
+ * tag will be tied to DSP for extraction for the entire lifetime of
+ * probe.
+ *
+ * Probing is initialized only once and each INIT request must be
+ * matched by DEINIT call.
+ */
+static int ipc4_probes_init(struct sof_client_dev *cdev, u32 stream_tag,
+			    size_t buffer_size)
+{
+	struct sof_man4_module *mentry = sof_ipc4_probe_get_module_info(cdev);
+	struct sof_ipc4_msg msg;
+	struct sof_ipc4_probe_cfg cfg;
+
+	if (!mentry)
+		return -ENODEV;
+
+	memset(&cfg, '\0', sizeof(cfg));
+	cfg.gtw_cfg.node_id = SOF_IPC4_PROBE_NODE_ID_INDEX(stream_tag - 1) |
+		SOF_IPC4_PROBE_NODE_ID_TYPE(SOF_IPC4_DMA_HDA_HOST_INPUT);
+
+	cfg.gtw_cfg.dma_buffer_size = buffer_size;
+
+	msg.primary = mentry->id;
+	msg.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_INIT_INSTANCE);
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+	msg.extension = SOF_IPC4_MOD_EXT_DST_MOD_INSTANCE(INVALID_PIPELINE_ID);
+	msg.extension |= SOF_IPC4_MOD_EXT_CORE_ID(0);
+
+	msg.data_size = sizeof(cfg);
+	msg.data_ptr = &cfg;
+
+	return sof_client_ipc_tx_message(cdev, &msg, NULL, 0);
+}
+
+/**
+ * ipc4_probes_deinit - cleanup after data probing
+ * @cdev:		SOF client device
+ * @return:		0 on success, negative error code on error
+ *
+ * Host sends DEINIT request to free previously initialized probe
+ * on DSP side once it is no longer needed. DEINIT only when there
+ * are no probes connected and with all injectors detached.
+ */
+static int ipc4_probes_deinit(struct sof_client_dev *cdev)
+{
+	struct sof_man4_module *mentry = sof_ipc4_probe_get_module_info(cdev);
+	struct sof_ipc4_msg msg;
+
+	msg.primary = mentry->id;
+	msg.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_DELETE_INSTANCE);
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+	msg.extension = SOF_IPC4_MOD_EXT_DST_MOD_INSTANCE(INVALID_PIPELINE_ID);
+	msg.extension |= SOF_IPC4_MOD_EXT_CORE_ID(0);
+
+	msg.data_size = 0;
+	msg.data_ptr = NULL;
+
+	return sof_client_ipc_tx_message(cdev, &msg, NULL, 0);
+}
+
+/**
+ * ipc4_probes_points_info - retrieve list of active probe points
+ * @cdev:	SOF client device
+ * @desc:	Returned list of active probes
+ * @num_desc:	Returned count of active probes
+ * @return:	0 on success, negative error code on error
+ *
+ * Dummy implementation returning empty list of probes.
+ */
+static int ipc4_probes_points_info(struct sof_client_dev *cdev,
+				   struct sof_probe_point_desc **desc,
+				   size_t *num_desc)
+{
+	/* TODO: Firmware side implementation needed first */
+	*desc = NULL;
+	*num_desc = 0;
+	return 0;
+}
+
+/**
+ * ipc4_probes_points_add - connect specified probes
+ * @cdev:	SOF client device
+ * @desc:	List of probe points to connect
+ * @num_desc:	Number of elements in @desc
+ * @return:	0 on success, negative error code on error
+ *
+ * Translates the generic probe point presentation to an IPC4
+ * message to dynamically connect the provided set of endpoints.
+ */
+static int ipc4_probes_points_add(struct sof_client_dev *cdev,
+				  struct sof_probe_point_desc *desc,
+				  size_t num_desc)
+{
+	struct sof_man4_module *mentry = sof_ipc4_probe_get_module_info(cdev);
+	struct sof_ipc4_probe_point *points;
+	struct sof_ipc4_msg msg;
+	int i, ret;
+
+	/* The sof_probe_point_desc and sof_ipc4_probe_point structs
+	 * are of same size and even the integers are the same in the
+	 * same order, and similar meaning, but since there is no
+	 * performance issue I wrote the conversion explicitly open for
+	 * future development.
+	 */
+	points = kcalloc(num_desc, sizeof(*points), GFP_KERNEL);
+	if (!points)
+		return -ENOMEM;
+
+	for (i = 0; i < num_desc; i++) {
+		points[i].point_id = desc[i].buffer_id;
+		points[i].purpose = desc[i].purpose;
+		points[i].stream_tag = desc[i].stream_tag;
+	}
+
+	msg.primary = mentry->id;
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+
+	msg.extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_PROBE_POINTS);
+
+	msg.data_size = sizeof(*points) * num_desc;
+	msg.data_ptr = points;
+
+	ret = sof_client_ipc_set_get_data(cdev, &msg, true);
+
+	kfree(points);
+
+	return ret;
+}
+
+/**
+ * ipc4_probes_points_remove - disconnect specified probes
+ * @cdev:		SOF client device
+ * @buffer_id:		List of probe points to disconnect
+ * @num_buffer_id:	Number of elements in @desc
+ * @return:		0 on success, negative error code on error
+ *
+ * Converts the generic buffer_id to IPC4 probe_point_id and remove
+ * the probe points with an IPC4 for message.
+ */
+static int ipc4_probes_points_remove(struct sof_client_dev *cdev,
+				     unsigned int *buffer_id, size_t num_buffer_id)
+{
+	struct sof_man4_module *mentry = sof_ipc4_probe_get_module_info(cdev);
+	struct sof_ipc4_msg msg;
+	u32 *probe_point_ids;
+	int i, ret;
+
+	probe_point_ids = kcalloc(num_buffer_id, sizeof(*probe_point_ids),
+				  GFP_KERNEL);
+	if (!probe_point_ids)
+		return -ENOMEM;
+
+	for (i = 0; i < num_buffer_id; i++)
+		probe_point_ids[i] = buffer_id[i];
+
+	msg.primary = mentry->id;
+	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+
+	msg.extension =
+		SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_PROBE_POINTS_DISCONNECT);
+
+	msg.data_size = num_buffer_id * sizeof(*probe_point_ids);
+	msg.data_ptr = probe_point_ids;
+
+	ret = sof_client_ipc_set_get_data(cdev, &msg, true);
+
+	kfree(probe_point_ids);
+
+	return ret;
+}
+
+const struct sof_probes_ipc_ops ipc4_probe_ops =  {
+	.init = ipc4_probes_init,
+	.deinit = ipc4_probes_deinit,
+	.points_info = ipc4_probes_points_info,
+	.points_add = ipc4_probes_points_add,
+	.points_remove = ipc4_probes_points_remove,
+};

sound/soc/sof/sof-client-probes.c

@@ -30,16 +30,6 @@ static bool __read_mostly sof_probes_enabled;
 module_param_named(enable, sof_probes_enabled, bool, 0444);
 MODULE_PARM_DESC(enable, "Enable SOF probes support");
 
-struct sof_probes_priv {
-	struct dentry *dfs_points;
-	struct dentry *dfs_points_remove;
-	u32 extractor_stream_tag;
-	struct snd_soc_card card;
-
-	const struct sof_probes_host_ops *host_ops;
-	const struct sof_probes_ipc_ops *ipc_ops;
-};
-
 static int sof_probes_compr_startup(struct snd_compr_stream *cstream,
 				    struct snd_soc_dai *dai)
 {
@@ -409,10 +399,6 @@ static int sof_probes_client_probe(struct auxiliary_device *auxdev,
 	if (!sof_probes_enabled)
 		return -ENXIO;
 
-	/* only ipc3 is supported */
-	if (sof_client_get_ipc_type(cdev) != SOF_IPC)
-		return -ENXIO;
-
 	if (!dev->platform_data) {
 		dev_err(dev, "missing platform data\n");
 		return -ENODEV;
@@ -431,7 +417,23 @@ static int sof_probes_client_probe(struct auxiliary_device *auxdev,
 	}
 
 	priv->host_ops = ops;
-	priv->ipc_ops = &ipc3_probe_ops;
+
+	switch (sof_client_get_ipc_type(cdev)) {
+#ifdef CONFIG_SND_SOC_SOF_INTEL_IPC4
+	case SOF_INTEL_IPC4:
+		priv->ipc_ops = &ipc4_probe_ops;
+		break;
+#endif
+#ifdef CONFIG_SND_SOC_SOF_IPC3
+	case SOF_IPC:
+		priv->ipc_ops = &ipc3_probe_ops;
+		break;
+#endif
+	default:
+		dev_err(dev, "Matching IPC ops not found.");
+		return -ENODEV;
+	}
+
 	cdev->data = priv;
 
 	/* register probes component driver and dai */

sound/soc/sof/sof-client-probes.h

@@ -49,4 +49,17 @@ struct sof_probes_ipc_ops {
 };
 
 extern const struct sof_probes_ipc_ops ipc3_probe_ops;
+extern const struct sof_probes_ipc_ops ipc4_probe_ops;
+
+struct sof_probes_priv {
+	struct dentry *dfs_points;
+	struct dentry *dfs_points_remove;
+	u32 extractor_stream_tag;
+	struct snd_soc_card card;
+	void *ipc_priv;
+
+	const struct sof_probes_host_ops *host_ops;
+	const struct sof_probes_ipc_ops *ipc_ops;
+};
+
 #endif