1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_fw_log.h b/drivers/net/ethernet/meta/fbnic/fbnic_fw_log.h
new file mode 100644
index 000000000000..cb6555f40a24
--- /dev/null
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_fw_log.h
@@ -0,0 +1,45 @@
+/* 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_ */