ixgbe_dcb.h revision 1.4.2.2
1 1.4.2.2 jdolecek /****************************************************************************** 2 1.4.2.2 jdolecek 3 1.4.2.2 jdolecek Copyright (c) 2001-2017, Intel Corporation 4 1.4.2.2 jdolecek All rights reserved. 5 1.4.2.2 jdolecek 6 1.4.2.2 jdolecek Redistribution and use in source and binary forms, with or without 7 1.4.2.2 jdolecek modification, are permitted provided that the following conditions are met: 8 1.4.2.2 jdolecek 9 1.4.2.2 jdolecek 1. Redistributions of source code must retain the above copyright notice, 10 1.4.2.2 jdolecek this list of conditions and the following disclaimer. 11 1.4.2.2 jdolecek 12 1.4.2.2 jdolecek 2. Redistributions in binary form must reproduce the above copyright 13 1.4.2.2 jdolecek notice, this list of conditions and the following disclaimer in the 14 1.4.2.2 jdolecek documentation and/or other materials provided with the distribution. 15 1.4.2.2 jdolecek 16 1.4.2.2 jdolecek 3. Neither the name of the Intel Corporation nor the names of its 17 1.4.2.2 jdolecek contributors may be used to endorse or promote products derived from 18 1.4.2.2 jdolecek this software without specific prior written permission. 19 1.4.2.2 jdolecek 20 1.4.2.2 jdolecek THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 1.4.2.2 jdolecek AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 1.4.2.2 jdolecek IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 1.4.2.2 jdolecek ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 1.4.2.2 jdolecek LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 1.4.2.2 jdolecek CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 1.4.2.2 jdolecek SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 1.4.2.2 jdolecek INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 1.4.2.2 jdolecek CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 1.4.2.2 jdolecek ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 1.4.2.2 jdolecek POSSIBILITY OF SUCH DAMAGE. 31 1.4.2.2 jdolecek 32 1.4.2.2 jdolecek ******************************************************************************/ 33 1.4.2.2 jdolecek /*$FreeBSD: head/sys/dev/ixgbe/ixgbe_dcb.h 320688 2017-07-05 17:27:03Z erj $*/ 34 1.4.2.2 jdolecek 35 1.4.2.2 jdolecek #ifndef _IXGBE_DCB_H_ 36 1.4.2.2 jdolecek #define _IXGBE_DCB_H_ 37 1.4.2.2 jdolecek 38 1.4.2.2 jdolecek #include "ixgbe_type.h" 39 1.4.2.2 jdolecek 40 1.4.2.2 jdolecek /* DCB defines */ 41 1.4.2.2 jdolecek /* DCB credit calculation defines */ 42 1.4.2.2 jdolecek #define IXGBE_DCB_CREDIT_QUANTUM 64 43 1.4.2.2 jdolecek #define IXGBE_DCB_MAX_CREDIT_REFILL 200 /* 200 * 64B = 12800B */ 44 1.4.2.2 jdolecek #define IXGBE_DCB_MAX_TSO_SIZE (32 * 1024) /* Max TSO pkt size in DCB*/ 45 1.4.2.2 jdolecek #define IXGBE_DCB_MAX_CREDIT (2 * IXGBE_DCB_MAX_CREDIT_REFILL) 46 1.4.2.2 jdolecek 47 1.4.2.2 jdolecek /* 513 for 32KB TSO packet */ 48 1.4.2.2 jdolecek #define IXGBE_DCB_MIN_TSO_CREDIT \ 49 1.4.2.2 jdolecek ((IXGBE_DCB_MAX_TSO_SIZE / IXGBE_DCB_CREDIT_QUANTUM) + 1) 50 1.4.2.2 jdolecek 51 1.4.2.2 jdolecek /* DCB configuration defines */ 52 1.4.2.2 jdolecek #define IXGBE_DCB_MAX_USER_PRIORITY 8 53 1.4.2.2 jdolecek #define IXGBE_DCB_MAX_BW_GROUP 8 54 1.4.2.2 jdolecek #define IXGBE_DCB_BW_PERCENT 100 55 1.4.2.2 jdolecek 56 1.4.2.2 jdolecek #define IXGBE_DCB_TX_CONFIG 0 57 1.4.2.2 jdolecek #define IXGBE_DCB_RX_CONFIG 1 58 1.4.2.2 jdolecek 59 1.4.2.2 jdolecek /* DCB capability defines */ 60 1.4.2.2 jdolecek #define IXGBE_DCB_PG_SUPPORT 0x00000001 61 1.4.2.2 jdolecek #define IXGBE_DCB_PFC_SUPPORT 0x00000002 62 1.4.2.2 jdolecek #define IXGBE_DCB_BCN_SUPPORT 0x00000004 63 1.4.2.2 jdolecek #define IXGBE_DCB_UP2TC_SUPPORT 0x00000008 64 1.4.2.2 jdolecek #define IXGBE_DCB_GSP_SUPPORT 0x00000010 65 1.4.2.2 jdolecek 66 1.4.2.2 jdolecek struct ixgbe_dcb_support { 67 1.4.2.2 jdolecek u32 capabilities; /* DCB capabilities */ 68 1.4.2.2 jdolecek 69 1.4.2.2 jdolecek /* Each bit represents a number of TCs configurable in the hw. 70 1.4.2.2 jdolecek * If 8 traffic classes can be configured, the value is 0x80. */ 71 1.4.2.2 jdolecek u8 traffic_classes; 72 1.4.2.2 jdolecek u8 pfc_traffic_classes; 73 1.4.2.2 jdolecek }; 74 1.4.2.2 jdolecek 75 1.4.2.2 jdolecek enum ixgbe_dcb_tsa { 76 1.4.2.2 jdolecek ixgbe_dcb_tsa_ets = 0, 77 1.4.2.2 jdolecek ixgbe_dcb_tsa_group_strict_cee, 78 1.4.2.2 jdolecek ixgbe_dcb_tsa_strict 79 1.4.2.2 jdolecek }; 80 1.4.2.2 jdolecek 81 1.4.2.2 jdolecek /* Traffic class bandwidth allocation per direction */ 82 1.4.2.2 jdolecek struct ixgbe_dcb_tc_path { 83 1.4.2.2 jdolecek u8 bwg_id; /* Bandwidth Group (BWG) ID */ 84 1.4.2.2 jdolecek u8 bwg_percent; /* % of BWG's bandwidth */ 85 1.4.2.2 jdolecek u8 link_percent; /* % of link bandwidth */ 86 1.4.2.2 jdolecek u8 up_to_tc_bitmap; /* User Priority to Traffic Class mapping */ 87 1.4.2.2 jdolecek u16 data_credits_refill; /* Credit refill amount in 64B granularity */ 88 1.4.2.2 jdolecek u16 data_credits_max; /* Max credits for a configured packet buffer 89 1.4.2.2 jdolecek * in 64B granularity.*/ 90 1.4.2.2 jdolecek enum ixgbe_dcb_tsa tsa; /* Link or Group Strict Priority */ 91 1.4.2.2 jdolecek }; 92 1.4.2.2 jdolecek 93 1.4.2.2 jdolecek enum ixgbe_dcb_pfc { 94 1.4.2.2 jdolecek ixgbe_dcb_pfc_disabled = 0, 95 1.4.2.2 jdolecek ixgbe_dcb_pfc_enabled, 96 1.4.2.2 jdolecek ixgbe_dcb_pfc_enabled_txonly, 97 1.4.2.2 jdolecek ixgbe_dcb_pfc_enabled_rxonly 98 1.4.2.2 jdolecek }; 99 1.4.2.2 jdolecek 100 1.4.2.2 jdolecek /* Traffic class configuration */ 101 1.4.2.2 jdolecek struct ixgbe_dcb_tc_config { 102 1.4.2.2 jdolecek struct ixgbe_dcb_tc_path path[2]; /* One each for Tx/Rx */ 103 1.4.2.2 jdolecek enum ixgbe_dcb_pfc pfc; /* Class based flow control setting */ 104 1.4.2.2 jdolecek 105 1.4.2.2 jdolecek u16 desc_credits_max; /* For Tx Descriptor arbitration */ 106 1.4.2.2 jdolecek u8 tc; /* Traffic class (TC) */ 107 1.4.2.2 jdolecek }; 108 1.4.2.2 jdolecek 109 1.4.2.2 jdolecek enum ixgbe_dcb_pba { 110 1.4.2.2 jdolecek /* PBA[0-7] each use 64KB FIFO */ 111 1.4.2.2 jdolecek ixgbe_dcb_pba_equal = PBA_STRATEGY_EQUAL, 112 1.4.2.2 jdolecek /* PBA[0-3] each use 80KB, PBA[4-7] each use 48KB */ 113 1.4.2.2 jdolecek ixgbe_dcb_pba_80_48 = PBA_STRATEGY_WEIGHTED 114 1.4.2.2 jdolecek }; 115 1.4.2.2 jdolecek 116 1.4.2.2 jdolecek struct ixgbe_dcb_num_tcs { 117 1.4.2.2 jdolecek u8 pg_tcs; 118 1.4.2.2 jdolecek u8 pfc_tcs; 119 1.4.2.2 jdolecek }; 120 1.4.2.2 jdolecek 121 1.4.2.2 jdolecek struct ixgbe_dcb_config { 122 1.4.2.2 jdolecek struct ixgbe_dcb_tc_config tc_config[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 123 1.4.2.2 jdolecek struct ixgbe_dcb_support support; 124 1.4.2.2 jdolecek struct ixgbe_dcb_num_tcs num_tcs; 125 1.4.2.2 jdolecek u8 bw_percentage[2][IXGBE_DCB_MAX_BW_GROUP]; /* One each for Tx/Rx */ 126 1.4.2.2 jdolecek bool pfc_mode_enable; 127 1.4.2.2 jdolecek bool round_robin_enable; 128 1.4.2.2 jdolecek 129 1.4.2.2 jdolecek enum ixgbe_dcb_pba rx_pba_cfg; 130 1.4.2.2 jdolecek 131 1.4.2.2 jdolecek u32 dcb_cfg_version; /* Not used...OS-specific? */ 132 1.4.2.2 jdolecek u32 link_speed; /* For bandwidth allocation validation purpose */ 133 1.4.2.2 jdolecek bool vt_mode; 134 1.4.2.2 jdolecek }; 135 1.4.2.2 jdolecek 136 1.4.2.2 jdolecek /* DCB driver APIs */ 137 1.4.2.2 jdolecek 138 1.4.2.2 jdolecek /* DCB rule checking */ 139 1.4.2.2 jdolecek s32 ixgbe_dcb_check_config_cee(struct ixgbe_dcb_config *); 140 1.4.2.2 jdolecek 141 1.4.2.2 jdolecek /* DCB credits calculation */ 142 1.4.2.2 jdolecek s32 ixgbe_dcb_calculate_tc_credits(u8 *, u16 *, u16 *, int); 143 1.4.2.2 jdolecek s32 ixgbe_dcb_calculate_tc_credits_cee(struct ixgbe_hw *, 144 1.4.2.2 jdolecek struct ixgbe_dcb_config *, u32, u8); 145 1.4.2.2 jdolecek 146 1.4.2.2 jdolecek /* DCB PFC */ 147 1.4.2.2 jdolecek s32 ixgbe_dcb_config_pfc(struct ixgbe_hw *, u8, u8 *); 148 1.4.2.2 jdolecek s32 ixgbe_dcb_config_pfc_cee(struct ixgbe_hw *, struct ixgbe_dcb_config *); 149 1.4.2.2 jdolecek 150 1.4.2.2 jdolecek /* DCB stats */ 151 1.4.2.2 jdolecek s32 ixgbe_dcb_config_tc_stats(struct ixgbe_hw *); 152 1.4.2.2 jdolecek s32 ixgbe_dcb_get_tc_stats(struct ixgbe_hw *, struct ixgbe_hw_stats *, u8); 153 1.4.2.2 jdolecek s32 ixgbe_dcb_get_pfc_stats(struct ixgbe_hw *, struct ixgbe_hw_stats *, u8); 154 1.4.2.2 jdolecek 155 1.4.2.2 jdolecek /* DCB config arbiters */ 156 1.4.2.2 jdolecek s32 ixgbe_dcb_config_tx_desc_arbiter_cee(struct ixgbe_hw *, 157 1.4.2.2 jdolecek struct ixgbe_dcb_config *); 158 1.4.2.2 jdolecek s32 ixgbe_dcb_config_tx_data_arbiter_cee(struct ixgbe_hw *, 159 1.4.2.2 jdolecek struct ixgbe_dcb_config *); 160 1.4.2.2 jdolecek s32 ixgbe_dcb_config_rx_arbiter_cee(struct ixgbe_hw *, 161 1.4.2.2 jdolecek struct ixgbe_dcb_config *); 162 1.4.2.2 jdolecek 163 1.4.2.2 jdolecek /* DCB unpack routines */ 164 1.4.2.2 jdolecek void ixgbe_dcb_unpack_pfc_cee(struct ixgbe_dcb_config *, u8 *, u8 *); 165 1.4.2.2 jdolecek void ixgbe_dcb_unpack_refill_cee(struct ixgbe_dcb_config *, int, u16 *); 166 1.4.2.2 jdolecek void ixgbe_dcb_unpack_max_cee(struct ixgbe_dcb_config *, u16 *); 167 1.4.2.2 jdolecek void ixgbe_dcb_unpack_bwgid_cee(struct ixgbe_dcb_config *, int, u8 *); 168 1.4.2.2 jdolecek void ixgbe_dcb_unpack_tsa_cee(struct ixgbe_dcb_config *, int, u8 *); 169 1.4.2.2 jdolecek void ixgbe_dcb_unpack_map_cee(struct ixgbe_dcb_config *, int, u8 *); 170 1.4.2.2 jdolecek u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *, int, u8); 171 1.4.2.2 jdolecek 172 1.4.2.2 jdolecek /* DCB initialization */ 173 1.4.2.2 jdolecek s32 ixgbe_dcb_hw_config(struct ixgbe_hw *, u16 *, u16 *, u8 *, u8 *, u8 *); 174 1.4.2.2 jdolecek s32 ixgbe_dcb_hw_config_cee(struct ixgbe_hw *, struct ixgbe_dcb_config *); 175 1.4.2.2 jdolecek #endif /* _IXGBE_DCB_H_ */ 176
Indexes created Sat Nov 01 05:10:12 GMT 2025