--- /dev/null
+// 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>
+//
+
+#include "sof-priv.h"
+#include "probe.h"
+
+/**
+ * sof_ipc_probe_init - initialize data probing
+ * @sdev: SOF sound device
+ * @stream_tag: Extractor stream tag
+ * @buffer_size: DMA buffer size to set for extractor
+ *
+ * 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.
+ */
+int sof_ipc_probe_init(struct snd_sof_dev *sdev,
+ u32 stream_tag, size_t buffer_size)
+{
+ struct sof_ipc_probe_dma_add_params *msg;
+ struct sof_ipc_reply reply;
+ size_t size = struct_size(msg, dma, 1);
+ int ret;
+
+ msg = kmalloc(size, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+ msg->hdr.size = size;
+ msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_INIT;
+ msg->num_elems = 1;
+ msg->dma[0].stream_tag = stream_tag;
+ msg->dma[0].dma_buffer_size = buffer_size;
+
+ ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
+ &reply, sizeof(reply));
+ kfree(msg);
+ return ret;
+}
+EXPORT_SYMBOL(sof_ipc_probe_init);
+
+/**
+ * sof_ipc_probe_deinit - cleanup after data probing
+ * @sdev: SOF sound device
+ *
+ * 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.
+ */
+int sof_ipc_probe_deinit(struct snd_sof_dev *sdev)
+{
+ struct sof_ipc_cmd_hdr msg;
+ struct sof_ipc_reply reply;
+
+ msg.size = sizeof(msg);
+ msg.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DEINIT;
+
+ return sof_ipc_tx_message(sdev->ipc, msg.cmd, &msg, msg.size,
+ &reply, sizeof(reply));
+}
+EXPORT_SYMBOL(sof_ipc_probe_deinit);
+
+static int sof_ipc_probe_info(struct snd_sof_dev *sdev, unsigned int cmd,
+ void **params, size_t *num_params)
+{
+ struct sof_ipc_probe_info_params msg = {{{0}}};
+ struct sof_ipc_probe_info_params *reply;
+ size_t bytes;
+ int ret;
+
+ *params = NULL;
+ *num_params = 0;
+
+ reply = kzalloc(SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
+ if (!reply)
+ return -ENOMEM;
+ msg.rhdr.hdr.size = sizeof(msg);
+ msg.rhdr.hdr.cmd = SOF_IPC_GLB_PROBE | cmd;
+
+ ret = sof_ipc_tx_message(sdev->ipc, msg.rhdr.hdr.cmd, &msg,
+ msg.rhdr.hdr.size, reply, SOF_IPC_MSG_MAX_SIZE);
+ if (ret < 0 || reply->rhdr.error < 0)
+ goto exit;
+
+ if (!reply->num_elems)
+ goto exit;
+
+ bytes = reply->num_elems * sizeof(reply->dma[0]);
+ *params = kmemdup(&reply->dma[0], bytes, GFP_KERNEL);
+ if (!*params) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+ *num_params = msg.num_elems;
+
+exit:
+ kfree(reply);
+ return ret;
+}
+
+/**
+ * sof_ipc_probe_dma_info - retrieve list of active injection dmas
+ * @sdev: SOF sound device
+ * @dma: Returned list of active dmas
+ * @num_dma: Returned count of active dmas
+ *
+ * Host sends DMA_INFO request to obtain list of injection dmas it
+ * can use to transfer data over with.
+ *
+ * Note that list contains only injection dmas as there is only one
+ * extractor (dma) and it is always assigned on probing init.
+ * DSP knows exactly where data from extraction probes is going to,
+ * which is not the case for injection where multiple streams
+ * could be engaged.
+ */
+int sof_ipc_probe_dma_info(struct snd_sof_dev *sdev,
+ struct sof_probe_dma **dma, size_t *num_dma)
+{
+ return sof_ipc_probe_info(sdev, SOF_IPC_PROBE_DMA_INFO,
+ (void **)dma, num_dma);
+}
+EXPORT_SYMBOL(sof_ipc_probe_dma_info);
+
+/**
+ * sof_ipc_probe_dma_add - attach to specified dmas
+ * @sdev: SOF sound device
+ * @dma: List of streams (dmas) to attach to
+ * @num_dma: Number of elements in @dma
+ *
+ * Contrary to extraction, injection streams are never assigned
+ * on init. Before attempting any data injection, host is responsible
+ * for specifying streams which will be later used to transfer data
+ * to connected probe points.
+ */
+int sof_ipc_probe_dma_add(struct snd_sof_dev *sdev,
+ struct sof_probe_dma *dma, size_t num_dma)
+{
+ struct sof_ipc_probe_dma_add_params *msg;
+ struct sof_ipc_reply reply;
+ size_t size = struct_size(msg, dma, num_dma);
+ int ret;
+
+ msg = kmalloc(size, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+ msg->hdr.size = size;
+ msg->num_elems = num_dma;
+ msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DMA_ADD;
+ memcpy(&msg->dma[0], dma, size - sizeof(*msg));
+
+ ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
+ &reply, sizeof(reply));
+ kfree(msg);
+ return ret;
+}
+EXPORT_SYMBOL(sof_ipc_probe_dma_add);
+
+/**
+ * sof_ipc_probe_dma_remove - detach from specified dmas
+ * @sdev: SOF sound device
+ * @stream_tag: List of stream tags to detach from
+ * @num_stream_tag: Number of elements in @stream_tag
+ *
+ * Host sends DMA_REMOVE request to free previously attached stream
+ * from being occupied for injection. Each detach operation should
+ * match equivalent DMA_ADD. Detach only when all probes tied to
+ * given stream have been disconnected.
+ */
+int sof_ipc_probe_dma_remove(struct snd_sof_dev *sdev,
+ unsigned int *stream_tag, size_t num_stream_tag)
+{
+ struct sof_ipc_probe_dma_remove_params *msg;
+ struct sof_ipc_reply reply;
+ size_t size = struct_size(msg, stream_tag, num_stream_tag);
+ int ret;
+
+ msg = kmalloc(size, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+ msg->hdr.size = size;
+ msg->num_elems = num_stream_tag;
+ msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DMA_REMOVE;
+ memcpy(&msg->stream_tag[0], stream_tag, size - sizeof(*msg));
+
+ ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
+ &reply, sizeof(reply));
+ kfree(msg);
+ return ret;
+}
+EXPORT_SYMBOL(sof_ipc_probe_dma_remove);
+
+/**
+ * sof_ipc_probe_points_info - retrieve list of active probe points
+ * @sdev: SOF sound device
+ * @desc: Returned list of active probes
+ * @num_desc: Returned count of active probes
+ *
+ * Host sends PROBE_POINT_INFO request to obtain list of active probe
+ * points, valid for disconnection when given probe is no longer
+ * required.
+ */
+int sof_ipc_probe_points_info(struct snd_sof_dev *sdev,
+ struct sof_probe_point_desc **desc, size_t *num_desc)
+{
+ return sof_ipc_probe_info(sdev, SOF_IPC_PROBE_POINT_INFO,
+ (void **)desc, num_desc);
+}
+EXPORT_SYMBOL(sof_ipc_probe_points_info);
+
+/**
+ * sof_ipc_probe_points_add - connect specified probes
+ * @sdev: SOF sound device
+ * @desc: List of probe points to connect
+ * @num_desc: Number of elements in @desc
+ *
+ * Dynamically connects to provided set of endpoints. Immediately
+ * after connection is established, host must be prepared to
+ * transfer data from or to target stream given the probing purpose.
+ *
+ * Each probe point should be removed using PROBE_POINT_REMOVE
+ * request when no longer needed.
+ */
+int sof_ipc_probe_points_add(struct snd_sof_dev *sdev,
+ struct sof_probe_point_desc *desc, size_t num_desc)
+{
+ struct sof_ipc_probe_point_add_params *msg;
+ struct sof_ipc_reply reply;
+ size_t size = struct_size(msg, desc, num_desc);
+ int ret;
+
+ msg = kmalloc(size, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+ msg->hdr.size = size;
+ msg->num_elems = num_desc;
+ msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_ADD;
+ memcpy(&msg->desc[0], desc, size - sizeof(*msg));
+
+ ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
+ &reply, sizeof(reply));
+ kfree(msg);
+ return ret;
+}
+EXPORT_SYMBOL(sof_ipc_probe_points_add);
+
+/**
+ * sof_ipc_probe_points_remove - disconnect specified probes
+ * @sdev: SOF sound device
+ * @buffer_id: List of probe points to disconnect
+ * @num_buffer_id: Number of elements in @desc
+ *
+ * Removes previously connected probes from list of active probe
+ * points and frees all resources on DSP side.
+ */
+int sof_ipc_probe_points_remove(struct snd_sof_dev *sdev,
+ unsigned int *buffer_id, size_t num_buffer_id)
+{
+ struct sof_ipc_probe_point_remove_params *msg;
+ struct sof_ipc_reply reply;
+ size_t size = struct_size(msg, buffer_id, num_buffer_id);
+ int ret;
+
+ msg = kmalloc(size, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+ msg->hdr.size = size;
+ msg->num_elems = num_buffer_id;
+ msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_REMOVE;
+ memcpy(&msg->buffer_id[0], buffer_id, size - sizeof(*msg));
+
+ ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
+ &reply, sizeof(reply));
+ kfree(msg);
+ return ret;
+}
+EXPORT_SYMBOL(sof_ipc_probe_points_remove);
--- /dev/null
+/* 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
projects / linux-2.6-microblaze.git / commitdiff