// SPDX-License-Identifier: GPL-2.0-only // // Copyright(c) 2019-2022 Intel Corporation // // Author: Cezary Rojewski // // Code moved to this file by: // Jyri Sarha // #include #include #include #include "sof-client.h" #include "sof-client-probes.h" struct sof_probe_dma { unsigned int stream_tag; unsigned int dma_buffer_size; } __packed; struct sof_ipc_probe_dma_add_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; struct sof_probe_dma dma[]; } __packed; struct sof_ipc_probe_info_params { struct sof_ipc_reply rhdr; unsigned int num_elems; union { DECLARE_FLEX_ARRAY(struct sof_probe_dma, dma); DECLARE_FLEX_ARRAY(struct sof_probe_point_desc, desc); }; } __packed; struct sof_ipc_probe_point_add_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; struct sof_probe_point_desc desc[]; } __packed; struct sof_ipc_probe_point_remove_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; unsigned int buffer_id[]; } __packed; /** * ipc3_probes_init - initialize data probing * @cdev: SOF client 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. */ static int ipc3_probes_init(struct sof_client_dev *cdev, u32 stream_tag, size_t buffer_size) { struct sof_ipc_probe_dma_add_params *msg; 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_client_ipc_tx_message_no_reply(cdev, msg); kfree(msg); return ret; } /** * ipc3_probes_deinit - cleanup after data probing * @cdev: SOF client 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. */ static int ipc3_probes_deinit(struct sof_client_dev *cdev) { struct sof_ipc_cmd_hdr msg; msg.size = sizeof(msg); msg.cmd = SOF_IPC_GLB_PROBE | SOF_IPC_PROBE_DEINIT; return sof_client_ipc_tx_message_no_reply(cdev, &msg); } static int ipc3_probes_info(struct sof_client_dev *cdev, unsigned int cmd, void **params, size_t *num_params) { size_t max_msg_size = sof_client_get_ipc_max_payload_size(cdev); 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(max_msg_size, GFP_KERNEL); if (!reply) return -ENOMEM; msg.rhdr.hdr.size = sizeof(msg); msg.rhdr.hdr.cmd = SOF_IPC_GLB_PROBE | cmd; ret = sof_client_ipc_tx_message(cdev, &msg, reply, max_msg_size); if (ret < 0 || reply->rhdr.error < 0) goto exit; if (!reply->num_elems) goto exit; if (cmd == SOF_IPC_PROBE_DMA_INFO) bytes = sizeof(reply->dma[0]); else bytes = sizeof(reply->desc[0]); bytes *= reply->num_elems; *params = kmemdup(&reply->dma[0], bytes, GFP_KERNEL); if (!*params) { ret = -ENOMEM; goto exit; } *num_params = reply->num_elems; exit: kfree(reply); return ret; } /** * ipc3_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 * * Host sends PROBE_POINT_INFO request to obtain list of active probe * points, valid for disconnection when given probe is no longer * required. */ static int ipc3_probes_points_info(struct sof_client_dev *cdev, struct sof_probe_point_desc **desc, size_t *num_desc) { return ipc3_probes_info(cdev, SOF_IPC_PROBE_POINT_INFO, (void **)desc, num_desc); } /** * ipc3_probes_points_add - connect specified probes * @cdev: SOF client 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. */ static int ipc3_probes_points_add(struct sof_client_dev *cdev, struct sof_probe_point_desc *desc, size_t num_desc) { struct sof_ipc_probe_point_add_params *msg; 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_client_ipc_tx_message_no_reply(cdev, msg); kfree(msg); return ret; } /** * ipc3_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 * * Removes previously connected probes from list of active probe * points and frees all resources on DSP side. */ static int ipc3_probes_points_remove(struct sof_client_dev *cdev, unsigned int *buffer_id, size_t num_buffer_id) { struct sof_ipc_probe_point_remove_params *msg; 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_client_ipc_tx_message_no_reply(cdev, msg); kfree(msg); return ret; } const struct sof_probes_ipc_ops ipc3_probe_ops = { .init = ipc3_probes_init, .deinit = ipc3_probes_deinit, .points_info = ipc3_probes_points_info, .points_add = ipc3_probes_points_add, .points_remove = ipc3_probes_points_remove, };