/*
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* Copyright (c) 2018, Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __MLX5_EN_PORT_BUFFER_H__
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#define __MLX5_EN_PORT_BUFFER_H__
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#include "en.h"
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#include "port.h"
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#define MLX5E_MAX_BUFFER 8
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#define MLX5E_DEFAULT_CABLE_LEN 7 /* 7 meters */
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#define MLX5_BUFFER_SUPPORTED(mdev) (MLX5_CAP_GEN(mdev, pcam_reg) && \
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MLX5_CAP_PCAM_REG(mdev, pbmc) && \
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MLX5_CAP_PCAM_REG(mdev, pptb))
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enum {
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MLX5E_PORT_BUFFER_CABLE_LEN = BIT(0),
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MLX5E_PORT_BUFFER_PFC = BIT(1),
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MLX5E_PORT_BUFFER_PRIO2BUFFER = BIT(2),
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MLX5E_PORT_BUFFER_SIZE = BIT(3),
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};
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struct mlx5e_bufferx_reg {
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u8 lossy;
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u8 epsb;
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u32 size;
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u32 xoff;
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u32 xon;
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};
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struct mlx5e_port_buffer {
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u32 port_buffer_size;
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u32 spare_buffer_size;
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struct mlx5e_bufferx_reg buffer[MLX5E_MAX_BUFFER];
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};
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int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
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u32 change, unsigned int mtu,
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struct ieee_pfc *pfc,
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u32 *buffer_size,
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u8 *prio2buffer);
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int mlx5e_port_query_buffer(struct mlx5e_priv *priv,
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struct mlx5e_port_buffer *port_buffer);
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#endif
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