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f374450381
The following change is a squash change that aims to reintroduce Camera Over Ethernet (CoE) functionality to kernel. Bug 5401884 Bug 5419655 Change-Id: Id2fc0263c43ed8566241dbf712aa603a3b3a76f4 Signed-off-by: Rakibul Hassan <rakibulh@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3419627 Reviewed-by: Anubhav Rai <arai@nvidia.com> Reviewed-by: Narendra Kondapalli <nkondapalli@nvidia.com> GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com> Reviewed-by: Igor Mitsyanko <imitsyanko@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
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* All rights reserved.
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef INCLUDE_NVETHERNET_PUBLIC_H
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#define INCLUDE_NVETHERNET_PUBLIC_H
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#include <linux/netdevice.h>
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#include <linux/types.h>
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#define COE_ENABLE 1U
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#define COE_MACSEC_HDR_OFFSET 42U
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#define COE_VLAN_ENABLE 1U
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#define COE_MACSEC_HDR_VLAN_DISABLE_OFFSET 38U
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#define COE_VLAN_DISABLE 0U
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#define COE_MACSEC_SFT_LC1 1024U
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#define COE_MACSEC_SFT_LC2 1024U
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/* These need to be configured only once during the COE plat driver init */
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struct nvether_coe_cfg {
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/* Flag to track if COE is already configured */
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u32 coe_enable;
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/* System wide COE header offset to be used */
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u32 coe_hdr_offset;
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/* System wide config whether COE packets are VLAN tagged */
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u32 vlan_enable;
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};
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/* These have to be provided for every COE stream added */
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struct nvether_per_coe_cfg {
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/* No. of lines in first subframes */
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u32 lc1;
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/* No. of lines in subsequent subframes */
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u32 lc2;
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};
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/**
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* @brief Configure COE in the macsec controller
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*
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* Configure the COE engine in the macsec controller for the
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* to a DMA channel specified by dma_chan.
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*
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* @param[in] ndev: Network device instance to be used for COE
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* @param[in] ether_coe_config: Struct that defines the system wide COE config.
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*
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* @retval value >=0 on success.
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* @retval "negative value" on failure.
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*/
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int nvether_coe_config(struct net_device *ndev,
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struct nvether_coe_cfg *ether_coe_cfg);
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/**
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* @brief Configure CoE on a channel
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*
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* @param[in] ndev: Network device to operate on.
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* @param[in] dmachan: Tte dma channel to take ownership of.
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*
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* @retval value >=0 on success.
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* @retval "negative value" on failure.
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*/
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int nvether_coe_chan_config(struct net_device *ndev, u32 dmachan,
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struct nvether_per_coe_cfg *p_coe_cfg);
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#endif /* INCLUDE_NVETHERNET_PUBLIC_H */
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