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