ath10k: add debugfs file to control firmware dbglog
Firmware dbglogs can be now enabled through fw_dbglog file. To enable all
possible log messages run:
echo 0xffffffff > /sys/kernel/debug/ieee80211/phy0/ath10k/fw_dbglog
And to put back firmare defaults use 0x0:
echo 0x0 > /sys/kernel/debug/ieee80211/phy0/ath10k/fw_dbglog
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 6bdfad3..6debd28 100644
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -614,6 +614,61 @@
.llseek = default_llseek,
};
+static ssize_t ath10k_read_fw_dbglog(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k *ar = file->private_data;
+ unsigned int len;
+ char buf[32];
+
+ len = scnprintf(buf, sizeof(buf), "0x%08x\n",
+ ar->debug.fw_dbglog_mask);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath10k_write_fw_dbglog(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k *ar = file->private_data;
+ unsigned long mask;
+ int ret;
+
+ ret = kstrtoul_from_user(user_buf, count, 0, &mask);
+ if (ret)
+ return ret;
+
+ mutex_lock(&ar->conf_mutex);
+
+ ar->debug.fw_dbglog_mask = mask;
+
+ if (ar->state == ATH10K_STATE_ON) {
+ ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
+ if (ret) {
+ ath10k_warn("dbglog cfg failed from debugfs: %d\n",
+ ret);
+ goto exit;
+ }
+ }
+
+ ret = count;
+
+exit:
+ mutex_unlock(&ar->conf_mutex);
+
+ return ret;
+}
+
+static const struct file_operations fops_fw_dbglog = {
+ .read = ath10k_read_fw_dbglog,
+ .write = ath10k_write_fw_dbglog,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
int ath10k_debug_start(struct ath10k *ar)
{
int ret;
@@ -625,6 +680,14 @@
/* continue normally anyway, this isn't serious */
ath10k_warn("failed to start htt stats workqueue: %d\n", ret);
+ if (ar->debug.fw_dbglog_mask) {
+ ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
+ if (ret)
+ /* not serious */
+ ath10k_warn("failed to enable dbglog during start: %d",
+ ret);
+ }
+
return 0;
}
@@ -747,6 +810,9 @@
debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_htt_stats_mask);
+ debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
+ ar, &fops_fw_dbglog);
+
if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
debugfs_create_file("dfs_simulate_radar", S_IWUSR,
ar->debug.debugfs_phy, ar,