cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fw_qos.h (5478B)

      1/*
      2 * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
      3 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies.
      4 * All rights reserved.
      5 *
      6 * This software is available to you under a choice of one of two
      7 * licenses.  You may choose to be licensed under the terms of the GNU
      8 * General Public License (GPL) Version 2, available from the file
      9 * COPYING in the main directory of this source tree, or the
     10 * OpenIB.org BSD license below:
     11 *
     12 *     Redistribution and use in source and binary forms, with or
     13 *     without modification, are permitted provided that the following
     14 *     conditions are met:
     15 *
     16 *      - Redistributions of source code must retain the above
     17 *        copyright notice, this list of conditions and the following
     18 *        disclaimer.
     19 *
     20 *      - Redistributions in binary form must reproduce the above
     21 *        copyright notice, this list of conditions and the following
     22 *        disclaimer in the documentation and/or other materials
     23 *        provided with the distribution.
     24 *
     25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     32 * SOFTWARE.
     33 */
     34
     35#ifndef MLX4_FW_QOS_H
     36#define MLX4_FW_QOS_H
     37
     38#include <linux/mlx4/cmd.h>
     39#include <linux/mlx4/device.h>
     40
     41#define MLX4_NUM_UP 8
     42#define MLX4_NUM_TC 8
     43
     44/* Default supported priorities for VPP allocation */
     45#define MLX4_DEFAULT_QOS_PRIO (0)
     46
     47/* Derived from FW feature definition, 0 is the default vport fo all QPs */
     48#define MLX4_VPP_DEFAULT_VPORT (0)
     49
     50struct mlx4_vport_qos_param {
     51	u32 bw_share;
     52	u32 max_avg_bw;
     53	u8 enable;
     54};
     55
     56/**
     57 * mlx4_SET_PORT_PRIO2TC - This routine maps user priorities to traffic
     58 * classes of a given port and device.
     59 *
     60 * @dev: mlx4_dev.
     61 * @port: Physical port number.
     62 * @prio2tc: Array of TC associated with each priorities.
     63 *
     64 * Returns 0 on success or a negative mlx4_core errno code.
     65 **/
     66int mlx4_SET_PORT_PRIO2TC(struct mlx4_dev *dev, u8 port, u8 *prio2tc);
     67
     68/**
     69 * mlx4_SET_PORT_SCHEDULER - This routine configures the arbitration between
     70 * traffic classes (ETS) and configured rate limit for traffic classes.
     71 * tc_tx_bw, pg and ratelimit are arrays where each index represents a TC.
     72 * The description for those parameters below refers to a single TC.
     73 *
     74 * @dev: mlx4_dev.
     75 * @port: Physical port number.
     76 * @tc_tx_bw: The percentage of the bandwidth allocated for traffic class
     77 *  within a TC group. The sum of the bw_percentage of all the traffic
     78 *  classes within a TC group must equal 100% for correct operation.
     79 * @pg: The TC group the traffic class is associated with.
     80 * @ratelimit: The maximal bandwidth allowed for the use by this traffic class.
     81 *
     82 * Returns 0 on success or a negative mlx4_core errno code.
     83 **/
     84int mlx4_SET_PORT_SCHEDULER(struct mlx4_dev *dev, u8 port, u8 *tc_tx_bw,
     85			    u8 *pg, u16 *ratelimit);
     86/**
     87 * mlx4_ALLOCATE_VPP_get - Query port VPP available resources and allocation.
     88 * Before distribution of VPPs to priorities, only available_vpp is returned.
     89 * After initialization it returns the distribution of VPPs among priorities.
     90 *
     91 * @dev: mlx4_dev.
     92 * @port: Physical port number.
     93 * @available_vpp: Pointer to variable where number of available VPPs is stored
     94 * @vpp_p_up: Distribution of VPPs to priorities is stored in this array
     95 *
     96 * Returns 0 on success or a negative mlx4_core errno code.
     97 **/
     98int mlx4_ALLOCATE_VPP_get(struct mlx4_dev *dev, u8 port,
     99			  u16 *available_vpp, u8 *vpp_p_up);
    100/**
    101 * mlx4_ALLOCATE_VPP_set - Distribution of VPPs among differnt priorities.
    102 * The total number of VPPs assigned to all for a port must not exceed
    103 * the value reported by available_vpp in mlx4_ALLOCATE_VPP_get.
    104 * VPP allocation is allowed only after the port type has been set,
    105 * and while no QPs are open for this port.
    106 *
    107 * @dev: mlx4_dev.
    108 * @port: Physical port number.
    109 * @vpp_p_up: Allocation of VPPs to different priorities.
    110 *
    111 * Returns 0 on success or a negative mlx4_core errno code.
    112 **/
    113int mlx4_ALLOCATE_VPP_set(struct mlx4_dev *dev, u8 port, u8 *vpp_p_up);
    114
    115/**
    116 * mlx4_SET_VPORT_QOS_get - Query QoS proporties of a Vport.
    117 * Each priority allowed for the Vport is assigned with a share of the BW,
    118 * and a BW limitation. This commands query the current QoS values.
    119 *
    120 * @dev: mlx4_dev.
    121 * @port: Physical port number.
    122 * @vport: Vport id.
    123 * @out_param: Array of mlx4_vport_qos_param that will contain the values.
    124 *
    125 * Returns 0 on success or a negative mlx4_core errno code.
    126 **/
    127int mlx4_SET_VPORT_QOS_get(struct mlx4_dev *dev, u8 port, u8 vport,
    128			   struct mlx4_vport_qos_param *out_param);
    129
    130/**
    131 * mlx4_SET_VPORT_QOS_set - Set QoS proporties of a Vport.
    132 * QoS parameters can be modified at any time, but must be initialized
    133 * before any QP is associated with the VPort.
    134 *
    135 * @dev: mlx4_dev.
    136 * @port: Physical port number.
    137 * @vport: Vport id.
    138 * @in_param: Array of mlx4_vport_qos_param which holds the requested values.
    139 *
    140 * Returns 0 on success or a negative mlx4_core errno code.
    141 **/
    142int mlx4_SET_VPORT_QOS_set(struct mlx4_dev *dev, u8 port, u8 vport,
    143			   struct mlx4_vport_qos_param *in_param);
    144
    145#endif /* MLX4_FW_QOS_H */