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/*
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005, 2006, 2007, 2008 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 MLX4_FW_QOS_H
#define MLX4_FW_QOS_H
#include <linux/mlx4/cmd.h>
#include <linux/mlx4/device.h>
#define MLX4_NUM_UP 8
#define MLX4_NUM_TC 8
/* Default supported priorities for VPP allocation */
#define MLX4_DEFAULT_QOS_PRIO (0)
/* Derived from FW feature definition, 0 is the default vport fo all QPs */
#define MLX4_VPP_DEFAULT_VPORT (0)
struct mlx4_vport_qos_param {
u32 bw_share;
u32 max_avg_bw;
u8 enable;
};
/**
* mlx4_SET_PORT_PRIO2TC - This routine maps user priorities to traffic
* classes of a given port and device.
*
* @dev: mlx4_dev.
* @port: Physical port number.
* @prio2tc: Array of TC associated with each priorities.
*
* Returns 0 on success or a negative mlx4_core errno code.
**/
int mlx4_SET_PORT_PRIO2TC(struct mlx4_dev *dev, u8 port, u8 *prio2tc);
/**
* mlx4_SET_PORT_SCHEDULER - This routine configures the arbitration between
* traffic classes (ETS) and configured rate limit for traffic classes.
* tc_tx_bw, pg and ratelimit are arrays where each index represents a TC.
* The description for those parameters below refers to a single TC.
*
* @dev: mlx4_dev.
* @port: Physical port number.
* @tc_tx_bw: The percentage of the bandwidth allocated for traffic class
* within a TC group. The sum of the bw_percentage of all the traffic
* classes within a TC group must equal 100% for correct operation.
* @pg: The TC group the traffic class is associated with.
* @ratelimit: The maximal bandwidth allowed for the use by this traffic class.
*
* Returns 0 on success or a negative mlx4_core errno code.
**/
int mlx4_SET_PORT_SCHEDULER(struct mlx4_dev *dev, u8 port, u8 *tc_tx_bw,
u8 *pg, u16 *ratelimit);
/**
* mlx4_ALLOCATE_VPP_get - Query port VPP availible resources and allocation.
* Before distribution of VPPs to priorities, only availible_vpp is returned.
* After initialization it returns the distribution of VPPs among priorities.
*
* @dev: mlx4_dev.
* @port: Physical port number.
* @availible_vpp: Pointer to variable where number of availible VPPs is stored
* @vpp_p_up: Distribution of VPPs to priorities is stored in this array
*
* Returns 0 on success or a negative mlx4_core errno code.
**/
int mlx4_ALLOCATE_VPP_get(struct mlx4_dev *dev, u8 port,
u16 *availible_vpp, u8 *vpp_p_up);
/**
* mlx4_ALLOCATE_VPP_set - Distribution of VPPs among differnt priorities.
* The total number of VPPs assigned to all for a port must not exceed
* the value reported by availible_vpp in mlx4_ALLOCATE_VPP_get.
* VPP allocation is allowed only after the port type has been set,
* and while no QPs are open for this port.
*
* @dev: mlx4_dev.
* @port: Physical port number.
* @vpp_p_up: Allocation of VPPs to different priorities.
*
* Returns 0 on success or a negative mlx4_core errno code.
**/
int mlx4_ALLOCATE_VPP_set(struct mlx4_dev *dev, u8 port, u8 *vpp_p_up);
/**
* mlx4_SET_VPORT_QOS_get - Query QoS proporties of a Vport.
* Each priority allowed for the Vport is assigned with a share of the BW,
* and a BW limitation. This commands query the current QoS values.
*
* @dev: mlx4_dev.
* @port: Physical port number.
* @vport: Vport id.
* @out_param: Array of mlx4_vport_qos_param that will contain the values.
*
* Returns 0 on success or a negative mlx4_core errno code.
**/
int mlx4_SET_VPORT_QOS_get(struct mlx4_dev *dev, u8 port, u8 vport,
struct mlx4_vport_qos_param *out_param);
/**
* mlx4_SET_VPORT_QOS_set - Set QoS proporties of a Vport.
* QoS parameters can be modified at any time, but must be initialized
* before any QP is associated with the VPort.
*
* @dev: mlx4_dev.
* @port: Physical port number.
* @vport: Vport id.
* @out_param: Array of mlx4_vport_qos_param which holds the requested values.
*
* Returns 0 on success or a negative mlx4_core errno code.
**/
int mlx4_SET_VPORT_QOS_set(struct mlx4_dev *dev, u8 port, u8 vport,
struct mlx4_vport_qos_param *in_param);
#endif /* MLX4_FW_QOS_H */
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