diff options
| author | Lee Trager <lee@trager.us> | 2025-07-02 12:12:12 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-08 17:05:46 -0700 |
| commit | 432407c86993a40d9d3d0bdaf231dfbd79fee39c (patch) | |
| tree | 59578a400d0ee578667e588482e3d5cb1169d859 | |
| parent | ecc53b1b46c892d2e3cf3cf4393b6d219dc4ae3f (diff) | |
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: Lee Trager <lee@trager.us>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250702192207.697368-7-lee@trager.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c index e8f2d7f2d9629..b7238dd967fe4 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c @@ -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) |