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/*
* Copyright (c) 2018, 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 __LIB_TRACER_H__
#define __LIB_TRACER_H__
#include <linux/mlx5/driver.h>
#include "mlx5_core.h"
#define STRINGS_DB_SECTIONS_NUM 8
#define STRINGS_DB_READ_SIZE_BYTES 256
#define STRINGS_DB_LEFTOVER_SIZE_BYTES 64
#define TRACER_BUFFER_PAGE_NUM 64
#define TRACER_BUFFER_CHUNK 4096
#define TRACE_BUFFER_SIZE_BYTE (TRACER_BUFFER_PAGE_NUM * TRACER_BUFFER_CHUNK)
#define TRACER_BLOCK_SIZE_BYTE 256
#define TRACES_PER_BLOCK 32
#define TRACE_STR_MSG 256
#define SAVED_TRACES_NUM 8192
#define TRACER_MAX_PARAMS 7
#define MESSAGE_HASH_BITS 6
#define MESSAGE_HASH_SIZE BIT(MESSAGE_HASH_BITS)
#define MASK_52_7 (0x1FFFFFFFFFFF80)
#define MASK_6_0 (0x7F)
struct mlx5_fw_trace_data {
u64 timestamp;
bool lost;
u8 event_id;
char msg[TRACE_STR_MSG];
};
struct mlx5_fw_tracer {
struct mlx5_core_dev *dev;
struct mlx5_nb nb;
bool owner;
u8 trc_ver;
struct workqueue_struct *work_queue;
struct work_struct ownership_change_work;
struct work_struct read_fw_strings_work;
/* Strings DB */
struct {
u8 first_string_trace;
u8 num_string_trace;
u32 num_string_db;
u32 base_address_out[STRINGS_DB_SECTIONS_NUM];
u32 size_out[STRINGS_DB_SECTIONS_NUM];
void *buffer[STRINGS_DB_SECTIONS_NUM];
bool loaded;
} str_db;
/* Log Buffer */
struct {
u32 pdn;
void *log_buf;
dma_addr_t dma;
u32 size;
struct mlx5_core_mkey mkey;
u32 consumer_index;
} buff;
/* Saved Traces Array */
struct {
struct mlx5_fw_trace_data straces[SAVED_TRACES_NUM];
u32 saved_traces_index;
struct mutex lock; /* Protect st_arr access */
} st_arr;
u64 last_timestamp;
struct work_struct handle_traces_work;
struct hlist_head hash[MESSAGE_HASH_SIZE];
struct list_head ready_strings_list;
};
struct tracer_string_format {
char *string;
int params[TRACER_MAX_PARAMS];
int num_of_params;
int last_param_num;
u8 event_id;
u32 tmsn;
struct hlist_node hlist;
struct list_head list;
u32 timestamp;
bool lost;
};
enum mlx5_fw_tracer_ownership_state {
MLX5_FW_TRACER_RELEASE_OWNERSHIP,
MLX5_FW_TRACER_ACQUIRE_OWNERSHIP,
};
enum tracer_ctrl_fields_select {
TRACE_STATUS = 1 << 0,
};
enum tracer_event_type {
TRACER_EVENT_TYPE_STRING,
TRACER_EVENT_TYPE_TIMESTAMP = 0xFF,
TRACER_EVENT_TYPE_UNRECOGNIZED,
};
enum tracing_mode {
TRACE_TO_MEMORY = 1 << 0,
};
struct tracer_timestamp_event {
u64 timestamp;
u8 unreliable;
};
struct tracer_string_event {
u32 timestamp;
u32 tmsn;
u32 tdsn;
u32 string_param;
};
struct tracer_event {
bool lost_event;
u32 type;
u8 event_id;
union {
struct tracer_string_event string_event;
struct tracer_timestamp_event timestamp_event;
};
};
struct mlx5_ifc_tracer_event_bits {
u8 lost[0x1];
u8 timestamp[0x7];
u8 event_id[0x8];
u8 event_data[0x30];
};
struct mlx5_ifc_tracer_string_event_bits {
u8 lost[0x1];
u8 timestamp[0x7];
u8 event_id[0x8];
u8 tmsn[0xd];
u8 tdsn[0x3];
u8 string_param[0x20];
};
struct mlx5_ifc_tracer_timestamp_event_bits {
u8 timestamp7_0[0x8];
u8 event_id[0x8];
u8 urts[0x3];
u8 timestamp52_40[0xd];
u8 timestamp39_8[0x20];
};
struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev);
int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer);
void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer);
void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer);
int mlx5_fw_tracer_trigger_core_dump_general(struct mlx5_core_dev *dev);
int mlx5_fw_tracer_get_saved_traces_objects(struct mlx5_fw_tracer *tracer,
struct devlink_fmsg *fmsg);
#endif
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