Commit 432407c8 authored by Lee Trager's avatar Lee Trager Committed by Jakub Kicinski
Browse files

eth: fbnic: Create fw_log file in DebugFS 



Allow reading the firmware log in DebugFS by accessing the fw_log file.
Buffer is read while a spinlock is acquired.

Signed-off-by: default avatarLee Trager <lee@trager.us>
Reviewed-by: default avatarJacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250702192207.697368-7-lee@trager.us


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent ecc53b1b

drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c

+29 −0
Original line number Diff line number Diff line
@@ -170,6 +170,33 @@ static int fbnic_dbg_ipo_dst_show(struct seq_file *s, void *v) 
}

DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_ipo_dst);



static int fbnic_dbg_fw_log_show(struct seq_file *s, void *v)

{

	struct fbnic_dev *fbd = s->private;

	struct fbnic_fw_log_entry *entry;

	unsigned long flags;



	if (!fbnic_fw_log_ready(fbd))

		return -ENXIO;



	spin_lock_irqsave(&fbd->fw_log.lock, flags);



	list_for_each_entry_reverse(entry, &fbd->fw_log.entries, list) {

		seq_printf(s, FBNIC_FW_LOG_FMT, entry->index,

			   (entry->timestamp / (MSEC_PER_SEC * 60 * 60 * 24)),

			   (entry->timestamp / (MSEC_PER_SEC * 60 * 60)) % 24,

			   ((entry->timestamp / (MSEC_PER_SEC * 60) % 60)),

			   ((entry->timestamp / MSEC_PER_SEC) % 60),

			   (entry->timestamp % MSEC_PER_SEC),

			   entry->msg);

	}



	spin_unlock_irqrestore(&fbd->fw_log.lock, flags);



	return 0;

}

DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_fw_log);



static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v)

{

	struct fbnic_dev *fbd = s->private;
@@ -222,6 +249,8 @@ void fbnic_dbg_fbd_init(struct fbnic_dev *fbd) 
			    &fbnic_dbg_ipo_src_fops);

	debugfs_create_file("ipo_dst", 0400, fbd->dbg_fbd, fbd,

			    &fbnic_dbg_ipo_dst_fops);

	debugfs_create_file("fw_log", 0400, fbd->dbg_fbd, fbd,

			    &fbnic_dbg_fw_log_fops);

}



void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd)