| /* |
| * 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_NETWORK_BUFFER 8 |
| #define MLX5E_TOTAL_BUFFERS 10 |
| #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; |
| u32 headroom_size; /* Buffers 0-7 */ |
| u32 internal_buffers_size; /* Buffers 8-9 */ |
| struct mlx5e_bufferx_reg buffer[MLX5E_MAX_NETWORK_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 |