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![Jyri Sarha](/assets/img/avatar_default.png)
Declare an IPC ops struct for probes client device and move IPC3 functions behind it. 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/20221031105141.19037-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
236 lines
6.3 KiB
C
236 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Copyright(c) 2019-2022 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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// Code moved to this file by:
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// Jyri Sarha <jyri.sarha@intel.com>
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//
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#include <linux/stddef.h>
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#include <sound/soc.h>
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#include <sound/sof/header.h>
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#include "sof-client.h"
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#include "sof-client-probes.h"
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struct sof_probe_dma {
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unsigned int stream_tag;
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unsigned int dma_buffer_size;
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} __packed;
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struct sof_ipc_probe_dma_add_params {
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struct sof_ipc_cmd_hdr hdr;
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unsigned int num_elems;
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struct sof_probe_dma dma[];
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} __packed;
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struct sof_ipc_probe_info_params {
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struct sof_ipc_reply rhdr;
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unsigned int num_elems;
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union {
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DECLARE_FLEX_ARRAY(struct sof_probe_dma, dma);
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DECLARE_FLEX_ARRAY(struct sof_probe_point_desc, desc);
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};
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} __packed;
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struct sof_ipc_probe_point_add_params {
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struct sof_ipc_cmd_hdr hdr;
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unsigned int num_elems;
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struct sof_probe_point_desc desc[];
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} __packed;
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struct sof_ipc_probe_point_remove_params {
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struct sof_ipc_cmd_hdr hdr;
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unsigned int num_elems;
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unsigned int buffer_id[];
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} __packed;
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/**
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* ipc3_probes_init - initialize data probing
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* @cdev: SOF client 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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static int ipc3_probes_init(struct sof_client_dev *cdev, u32 stream_tag,
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size_t buffer_size)
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{
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struct sof_ipc_probe_dma_add_params *msg;
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size_t size = struct_size(msg, dma, 1);
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struct sof_ipc_reply reply;
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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_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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/**
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* ipc3_probes_deinit - cleanup after data probing
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* @cdev: SOF client 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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static int ipc3_probes_deinit(struct sof_client_dev *cdev)
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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_client_ipc_tx_message(cdev, &msg, &reply, sizeof(reply));
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}
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static int ipc3_probes_info(struct sof_client_dev *cdev, unsigned int cmd,
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void **params, size_t *num_params)
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{
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size_t max_msg_size = sof_client_get_ipc_max_payload_size(cdev);
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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(max_msg_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_client_ipc_tx_message(cdev, &msg, reply, max_msg_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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* ipc3_probes_points_info - retrieve list of active probe points
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* @cdev: SOF client 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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static int ipc3_probes_points_info(struct sof_client_dev *cdev,
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struct sof_probe_point_desc **desc,
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size_t *num_desc)
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{
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return ipc3_probes_info(cdev, SOF_IPC_PROBE_POINT_INFO,
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(void **)desc, num_desc);
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}
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/**
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* ipc3_probes_points_add - connect specified probes
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* @cdev: SOF client 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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static int ipc3_probes_points_add(struct sof_client_dev *cdev,
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struct sof_probe_point_desc *desc,
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size_t num_desc)
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{
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struct sof_ipc_probe_point_add_params *msg;
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size_t size = struct_size(msg, desc, num_desc);
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struct sof_ipc_reply reply;
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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_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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/**
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* ipc3_probes_points_remove - disconnect specified probes
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* @cdev: SOF client 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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static int ipc3_probes_points_remove(struct sof_client_dev *cdev,
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unsigned int *buffer_id,
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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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size_t size = struct_size(msg, buffer_id, num_buffer_id);
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struct sof_ipc_reply reply;
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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_client_ipc_tx_message(cdev, msg, &reply, sizeof(reply));
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kfree(msg);
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return ret;
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}
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const struct sof_probes_ipc_ops ipc3_probe_ops = {
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.init = ipc3_probes_init,
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.deinit = ipc3_probes_deinit,
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.points_info = ipc3_probes_points_info,
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.points_add = ipc3_probes_points_add,
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.points_remove = ipc3_probes_points_remove,
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};
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