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2f69bee627
- Updates licenses for DCE-KMD files that are shared with HVRTOS.
- Update from GPL-2.0 to MIT as we use these files in both
open source and closed source context.
JIRA TDS-16741
Change-Id: Icf7aeb737f2f3b294bb9ff9c36d5ed7220c13dea
Signed-off-by: anupamg <anupamg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3293404
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* SPDX-FileCopyrightText: Copyright (c) 2019-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef TEGRA_DCE_CLIENT_IPC_H
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#define TEGRA_DCE_CLIENT_IPC_H
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#define DCE_CLIENT_IPC_TYPE_CPU_RM 0U
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#define DCE_CLIENT_IPC_TYPE_HDCP_KMD 1U
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#define DCE_CLIENT_IPC_TYPE_RM_EVENT 2U
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#define DCE_CLIENT_IPC_TYPE_MAX 3U
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#define DCE_CLIENT_MAX_IPC_MSG_SIZE 4096
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/**
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* struct dce_ipc_message - Contains necessary info for an ipc msg.
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*
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* @tx : transmit message info
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* @rx : receive message info
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*/
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struct dce_ipc_message {
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struct {
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void *data;
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size_t size;
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} tx;
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struct {
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void *data;
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size_t size;
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} rx;
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};
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/*
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* tegra_dce_client_ipc_callback_t - callback function to notify the
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* client when the CPU Driver receives an IPC from DCE for the client.
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*
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* @client_id: id that represents the corresponding client.
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* @interface_type: Interface on which the IPC was received.
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* @msg_length: Length of the message.
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* @msg_data: Message data.
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* @usr_ctx: Any user context if present.
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*/
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typedef void (*tegra_dce_client_ipc_callback_t)(u32 handle,
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u32 interface_type, u32 msg_length,
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void *msg_data, void *usr_ctx);
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/*
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* tegra_dce_register_ipc_client() - used by clients to register with dce driver
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* @interface_type: Interface for which this client is expected to send rpcs and
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* receive callbacks.
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* @callback_fn: callback function to be called by DCE driver on receiving IPCs
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* from DCE on this interface.
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* @usr_ctx: Any user context if present.
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*
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* Return: valid client_id if no errors else corresponding error value.
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*/
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int tegra_dce_register_ipc_client(u32 interface_type,
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tegra_dce_client_ipc_callback_t callback_fn,
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void *usr_ctx, u32 *handlep);
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/*
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* tegra_dce_unregister_client() - used by clients to unregister to dce driver
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* @client_id : ointer to client's data
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*
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* Return: 0 if no errors else corresponding error value.
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*/
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int tegra_dce_unregister_ipc_client(u32 handle);
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/*
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* tegra_dce_client_ipc_send_recv() - used by clients to send rpcs to dce
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* @client_id : client_id registered with dce driver
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* @msg : message to be sent and received
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*
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* Return: 0 if no errors else corresponding error value.
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*/
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int tegra_dce_client_ipc_send_recv(u32 handle, struct dce_ipc_message *msg);
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#endif
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