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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
#ifndef _FBNIC_FW_LOG_H_
#define _FBNIC_FW_LOG_H_
#include <linux/spinlock.h>
#include <linux/types.h>
/* A 512K log buffer was chosen fairly arbitrarily */
#define FBNIC_FW_LOG_SIZE (512 * 1024) /* bytes */
/* Firmware log output is prepended with log index followed by a timestamp.
* The timestamp is similar to Zephyr's format DD:HH:MM:SS.MMM
*/
#define FBNIC_FW_LOG_FMT "[%5lld] [%02ld:%02ld:%02ld:%02ld.%03ld] %s\n"
struct fbnic_dev;
struct fbnic_fw_log_entry {
struct list_head list;
u64 index;
u32 timestamp;
u16 len;
char msg[] __counted_by(len);
};
struct fbnic_fw_log {
void *data_start;
void *data_end;
size_t size;
struct list_head entries;
/* Spin lock for accessing or modifying entries */
spinlock_t lock;
};
#define fbnic_fw_log_ready(_fbd) (!!(_fbd)->fw_log.data_start)
void fbnic_fw_log_enable(struct fbnic_dev *fbd, bool send_hist);
void fbnic_fw_log_disable(struct fbnic_dev *fbd);
int fbnic_fw_log_init(struct fbnic_dev *fbd);
void fbnic_fw_log_free(struct fbnic_dev *fbd);
int fbnic_fw_log_write(struct fbnic_dev *fbd, u64 index, u32 timestamp,
char *msg);
#endif /* _FBNIC_FW_LOG_H_ */
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