1 /* 2 * Copyright (c) 2018, Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #ifndef __LIB_TRACER_H__ 34 #define __LIB_TRACER_H__ 35 36 #include <linux/mlx5/driver.h> 37 #include "mlx5_core.h" 38 39 #define STRINGS_DB_SECTIONS_NUM 8 40 #define STRINGS_DB_READ_SIZE_BYTES 256 41 #define STRINGS_DB_LEFTOVER_SIZE_BYTES 64 42 #define TRACER_BUFFER_PAGE_NUM 64 43 #define TRACER_BUFFER_CHUNK 4096 44 #define TRACE_BUFFER_SIZE_BYTE (TRACER_BUFFER_PAGE_NUM * TRACER_BUFFER_CHUNK) 45 46 #define TRACER_BLOCK_SIZE_BYTE 256 47 #define TRACES_PER_BLOCK 32 48 49 #define TRACE_STR_MSG 256 50 #define SAVED_TRACES_NUM 8192 51 52 #define TRACER_MAX_PARAMS 7 53 #define MESSAGE_HASH_BITS 6 54 #define MESSAGE_HASH_SIZE BIT(MESSAGE_HASH_BITS) 55 56 #define MASK_52_7 (0x1FFFFFFFFFFF80) 57 #define MASK_6_0 (0x7F) 58 59 struct mlx5_fw_trace_data { 60 u64 timestamp; 61 bool lost; 62 u8 event_id; 63 char msg[TRACE_STR_MSG]; 64 }; 65 66 enum mlx5_fw_tracer_state { 67 MLX5_TRACER_STATE_UP = BIT(0), 68 MLX5_TRACER_RECREATE_DB = BIT(1), 69 }; 70 71 struct mlx5_fw_tracer { 72 struct mlx5_core_dev *dev; 73 struct mlx5_nb nb; 74 bool owner; 75 u8 trc_ver; 76 struct workqueue_struct *work_queue; 77 struct work_struct ownership_change_work; 78 struct work_struct read_fw_strings_work; 79 80 /* Strings DB */ 81 struct { 82 u8 first_string_trace; 83 u8 num_string_trace; 84 u32 num_string_db; 85 u32 base_address_out[STRINGS_DB_SECTIONS_NUM]; 86 u32 size_out[STRINGS_DB_SECTIONS_NUM]; 87 void *buffer[STRINGS_DB_SECTIONS_NUM]; 88 bool loaded; 89 } str_db; 90 91 /* Log Buffer */ 92 struct { 93 u32 pdn; 94 void *log_buf; 95 dma_addr_t dma; 96 u32 size; 97 u32 mkey; 98 u32 consumer_index; 99 } buff; 100 101 /* Saved Traces Array */ 102 struct { 103 struct mlx5_fw_trace_data straces[SAVED_TRACES_NUM]; 104 u32 saved_traces_index; 105 struct mutex lock; /* Protect st_arr access */ 106 } st_arr; 107 108 u64 last_timestamp; 109 struct work_struct handle_traces_work; 110 struct hlist_head hash[MESSAGE_HASH_SIZE]; 111 struct list_head ready_strings_list; 112 struct work_struct update_db_work; 113 struct mutex state_lock; /* Synchronize update work with reload flows */ 114 unsigned long state; 115 }; 116 117 struct tracer_string_format { 118 char *string; 119 int params[TRACER_MAX_PARAMS]; 120 int num_of_params; 121 int last_param_num; 122 u8 event_id; 123 u32 tmsn; 124 struct hlist_node hlist; 125 struct list_head list; 126 u32 timestamp; 127 bool lost; 128 }; 129 130 enum mlx5_fw_tracer_ownership_state { 131 MLX5_FW_TRACER_RELEASE_OWNERSHIP, 132 MLX5_FW_TRACER_ACQUIRE_OWNERSHIP, 133 }; 134 135 enum tracer_ctrl_fields_select { 136 TRACE_STATUS = 1 << 0, 137 }; 138 139 enum tracer_event_type { 140 TRACER_EVENT_TYPE_STRING, 141 TRACER_EVENT_TYPE_TIMESTAMP = 0xFF, 142 TRACER_EVENT_TYPE_UNRECOGNIZED, 143 }; 144 145 enum tracing_mode { 146 TRACE_TO_MEMORY = 1 << 0, 147 }; 148 149 struct tracer_timestamp_event { 150 u64 timestamp; 151 u8 unreliable; 152 }; 153 154 struct tracer_string_event { 155 u32 timestamp; 156 u32 tmsn; 157 u32 tdsn; 158 u32 string_param; 159 }; 160 161 struct tracer_event { 162 bool lost_event; 163 u32 type; 164 u8 event_id; 165 union { 166 struct tracer_string_event string_event; 167 struct tracer_timestamp_event timestamp_event; 168 }; 169 u64 *out; 170 }; 171 172 struct mlx5_ifc_tracer_event_bits { 173 u8 lost[0x1]; 174 u8 timestamp[0x7]; 175 u8 event_id[0x8]; 176 u8 event_data[0x30]; 177 }; 178 179 struct mlx5_ifc_tracer_string_event_bits { 180 u8 lost[0x1]; 181 u8 timestamp[0x7]; 182 u8 event_id[0x8]; 183 u8 tmsn[0xd]; 184 u8 tdsn[0x3]; 185 u8 string_param[0x20]; 186 }; 187 188 struct mlx5_ifc_tracer_timestamp_event_bits { 189 u8 timestamp7_0[0x8]; 190 u8 event_id[0x8]; 191 u8 urts[0x3]; 192 u8 timestamp52_40[0xd]; 193 u8 timestamp39_8[0x20]; 194 }; 195 196 struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev); 197 int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer); 198 void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer); 199 void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer); 200 int mlx5_fw_tracer_trigger_core_dump_general(struct mlx5_core_dev *dev); 201 int mlx5_fw_tracer_get_saved_traces_objects(struct mlx5_fw_tracer *tracer, 202 struct devlink_fmsg *fmsg); 203 int mlx5_fw_tracer_reload(struct mlx5_fw_tracer *tracer); 204 205 #endif 206