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e149ca29f3
Remove the ambiguity with GPL-2.0 and use an explicit GPL-2.0-only tag. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Link: https://lore.kernel.org/r/20200501145850.15178-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
291 lines
8.5 KiB
C
291 lines
8.5 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2019-2020 Intel Corporation. All rights reserved.
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//
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// Author: Cezary Rojewski <cezary.rojewski@intel.com>
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//
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#include "sof-priv.h"
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#include "probe.h"
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/**
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* sof_ipc_probe_init - initialize data probing
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* @sdev: SOF sound device
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* @stream_tag: Extractor stream tag
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* @buffer_size: DMA buffer size to set for extractor
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*
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* Host chooses whether extraction is supported or not by providing
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* valid stream tag to DSP. Once specified, stream described by that
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* tag will be tied to DSP for extraction for the entire lifetime of
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* probe.
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*
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* Probing is initialized only once and each INIT request must be
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* matched by DEINIT call.
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*/
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int sof_ipc_probe_init(struct snd_sof_dev *sdev,
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u32 stream_tag, size_t buffer_size)
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{
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struct sof_ipc_probe_dma_add_params *msg;
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struct sof_ipc_reply reply;
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size_t size = struct_size(msg, dma, 1);
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_INIT;
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msg->num_elems = 1;
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msg->dma[0].stream_tag = stream_tag;
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msg->dma[0].dma_buffer_size = buffer_size;
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ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
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&reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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EXPORT_SYMBOL(sof_ipc_probe_init);
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/**
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* sof_ipc_probe_deinit - cleanup after data probing
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* @sdev: SOF sound device
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*
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* Host sends DEINIT request to free previously initialized probe
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* on DSP side once it is no longer needed. DEINIT only when there
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* are no probes connected and with all injectors detached.
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*/
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int sof_ipc_probe_deinit(struct snd_sof_dev *sdev)
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{
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struct sof_ipc_cmd_hdr msg;
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struct sof_ipc_reply reply;
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msg.size = sizeof(msg);
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msg.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DEINIT;
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return sof_ipc_tx_message(sdev->ipc, msg.cmd, &msg, msg.size,
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&reply, sizeof(reply));
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}
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EXPORT_SYMBOL(sof_ipc_probe_deinit);
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static int sof_ipc_probe_info(struct snd_sof_dev *sdev, unsigned int cmd,
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void **params, size_t *num_params)
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{
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struct sof_ipc_probe_info_params msg = {{{0}}};
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struct sof_ipc_probe_info_params *reply;
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size_t bytes;
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int ret;
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*params = NULL;
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*num_params = 0;
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reply = kzalloc(SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
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if (!reply)
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return -ENOMEM;
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msg.rhdr.hdr.size = sizeof(msg);
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msg.rhdr.hdr.cmd = SOF_IPC_GLB_PROBE | cmd;
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ret = sof_ipc_tx_message(sdev->ipc, msg.rhdr.hdr.cmd, &msg,
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msg.rhdr.hdr.size, reply, SOF_IPC_MSG_MAX_SIZE);
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if (ret < 0 || reply->rhdr.error < 0)
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goto exit;
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if (!reply->num_elems)
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goto exit;
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if (cmd == SOF_IPC_PROBE_DMA_INFO)
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bytes = sizeof(reply->dma[0]);
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else
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bytes = sizeof(reply->desc[0]);
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bytes *= reply->num_elems;
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*params = kmemdup(&reply->dma[0], bytes, GFP_KERNEL);
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if (!*params) {
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ret = -ENOMEM;
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goto exit;
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}
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*num_params = reply->num_elems;
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exit:
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kfree(reply);
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return ret;
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}
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/**
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* sof_ipc_probe_dma_info - retrieve list of active injection dmas
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* @sdev: SOF sound device
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* @dma: Returned list of active dmas
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* @num_dma: Returned count of active dmas
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*
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* Host sends DMA_INFO request to obtain list of injection dmas it
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* can use to transfer data over with.
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*
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* Note that list contains only injection dmas as there is only one
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* extractor (dma) and it is always assigned on probing init.
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* DSP knows exactly where data from extraction probes is going to,
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* which is not the case for injection where multiple streams
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* could be engaged.
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*/
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int sof_ipc_probe_dma_info(struct snd_sof_dev *sdev,
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struct sof_probe_dma **dma, size_t *num_dma)
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{
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return sof_ipc_probe_info(sdev, SOF_IPC_PROBE_DMA_INFO,
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(void **)dma, num_dma);
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}
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EXPORT_SYMBOL(sof_ipc_probe_dma_info);
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/**
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* sof_ipc_probe_dma_add - attach to specified dmas
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* @sdev: SOF sound device
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* @dma: List of streams (dmas) to attach to
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* @num_dma: Number of elements in @dma
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*
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* Contrary to extraction, injection streams are never assigned
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* on init. Before attempting any data injection, host is responsible
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* for specifying streams which will be later used to transfer data
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* to connected probe points.
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*/
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int sof_ipc_probe_dma_add(struct snd_sof_dev *sdev,
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struct sof_probe_dma *dma, size_t num_dma)
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{
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struct sof_ipc_probe_dma_add_params *msg;
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struct sof_ipc_reply reply;
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size_t size = struct_size(msg, dma, num_dma);
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->num_elems = num_dma;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DMA_ADD;
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memcpy(&msg->dma[0], dma, size - sizeof(*msg));
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ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
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&reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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EXPORT_SYMBOL(sof_ipc_probe_dma_add);
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/**
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* sof_ipc_probe_dma_remove - detach from specified dmas
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* @sdev: SOF sound device
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* @stream_tag: List of stream tags to detach from
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* @num_stream_tag: Number of elements in @stream_tag
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*
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* Host sends DMA_REMOVE request to free previously attached stream
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* from being occupied for injection. Each detach operation should
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* match equivalent DMA_ADD. Detach only when all probes tied to
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* given stream have been disconnected.
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*/
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int sof_ipc_probe_dma_remove(struct snd_sof_dev *sdev,
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unsigned int *stream_tag, size_t num_stream_tag)
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{
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struct sof_ipc_probe_dma_remove_params *msg;
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struct sof_ipc_reply reply;
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size_t size = struct_size(msg, stream_tag, num_stream_tag);
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->num_elems = num_stream_tag;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DMA_REMOVE;
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memcpy(&msg->stream_tag[0], stream_tag, size - sizeof(*msg));
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ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
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&reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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EXPORT_SYMBOL(sof_ipc_probe_dma_remove);
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/**
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* sof_ipc_probe_points_info - retrieve list of active probe points
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* @sdev: SOF sound device
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* @desc: Returned list of active probes
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* @num_desc: Returned count of active probes
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*
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* Host sends PROBE_POINT_INFO request to obtain list of active probe
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* points, valid for disconnection when given probe is no longer
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* required.
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*/
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int sof_ipc_probe_points_info(struct snd_sof_dev *sdev,
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struct sof_probe_point_desc **desc, size_t *num_desc)
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{
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return sof_ipc_probe_info(sdev, SOF_IPC_PROBE_POINT_INFO,
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(void **)desc, num_desc);
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}
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EXPORT_SYMBOL(sof_ipc_probe_points_info);
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/**
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* sof_ipc_probe_points_add - connect specified probes
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* @sdev: SOF sound device
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* @desc: List of probe points to connect
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* @num_desc: Number of elements in @desc
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*
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* Dynamically connects to provided set of endpoints. Immediately
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* after connection is established, host must be prepared to
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* transfer data from or to target stream given the probing purpose.
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*
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* Each probe point should be removed using PROBE_POINT_REMOVE
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* request when no longer needed.
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*/
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int sof_ipc_probe_points_add(struct snd_sof_dev *sdev,
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struct sof_probe_point_desc *desc, size_t num_desc)
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{
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struct sof_ipc_probe_point_add_params *msg;
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struct sof_ipc_reply reply;
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size_t size = struct_size(msg, desc, num_desc);
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->num_elems = num_desc;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_ADD;
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memcpy(&msg->desc[0], desc, size - sizeof(*msg));
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ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
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&reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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EXPORT_SYMBOL(sof_ipc_probe_points_add);
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/**
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* sof_ipc_probe_points_remove - disconnect specified probes
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* @sdev: SOF sound device
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* @buffer_id: List of probe points to disconnect
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* @num_buffer_id: Number of elements in @desc
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*
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* Removes previously connected probes from list of active probe
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* points and frees all resources on DSP side.
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*/
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int sof_ipc_probe_points_remove(struct snd_sof_dev *sdev,
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unsigned int *buffer_id, size_t num_buffer_id)
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{
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struct sof_ipc_probe_point_remove_params *msg;
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struct sof_ipc_reply reply;
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size_t size = struct_size(msg, buffer_id, num_buffer_id);
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int ret;
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msg = kmalloc(size, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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msg->hdr.size = size;
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msg->num_elems = num_buffer_id;
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msg->hdr.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_POINT_REMOVE;
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memcpy(&msg->buffer_id[0], buffer_id, size - sizeof(*msg));
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ret = sof_ipc_tx_message(sdev->ipc, msg->hdr.cmd, msg, msg->hdr.size,
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&reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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EXPORT_SYMBOL(sof_ipc_probe_points_remove);
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