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 50 struct 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 **/ 66 int 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 **/ 84 int 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 availible resources and allocation. 88 * Before distribution of VPPs to priorities, only availible_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 * @availible_vpp: Pointer to variable where number of availible 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 **/ 98 int mlx4_ALLOCATE_VPP_get(struct mlx4_dev *dev, u8 port, 99 u16 *availible_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 availible_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 **/ 113 int 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 **/ 127 int 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 * @out_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 **/ 142 int 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 */ 146