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290 lines
8.5 KiB
290 lines
8.5 KiB
// 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 <[email protected]> |
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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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