@@ -33,6 +33,82 @@ static const struct file_operations fops_simulate_radar = {
.open = simple_open
};
+static ssize_t ath12k_read_simulate_fw_crash(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ const char buf[] =
+ "To simulate firmware crash write one of the keywords to this file:\n"
+ "`assert` - send WMI_FORCE_FW_HANG_CMDID to firmware to cause assert.\n";
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
+}
+
+static ssize_t
+ath12k_write_simulate_fw_crash(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath12k_base *ab = file->private_data;
+ struct ath12k_pdev *pdev;
+ struct ath12k *ar = NULL;
+ char buf[32] = {0};
+ int i, ret;
+ ssize_t rc;
+
+ /* filter partial writes and invalid commands */
+ if (*ppos != 0 || count >= sizeof(buf) || count == 0)
+ return -EINVAL;
+
+ rc = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+ if (rc < 0)
+ return rc;
+
+ /* drop the possible '\n' from the end */
+ if (buf[*ppos - 1] == '\n')
+ buf[*ppos - 1] = '\0';
+
+ for (i = 0; i < ab->num_radios; i++) {
+ pdev = &ab->pdevs[i];
+ ar = pdev->ar;
+ if (ar)
+ break;
+ }
+
+ if (!ar)
+ return -ENETDOWN;
+
+ if (!strcmp(buf, "assert")) {
+ ath12k_info(ab, "simulating firmware assert crash\n");
+ ret = ath12k_wmi_force_fw_hang_cmd(ar,
+ ATH12K_WMI_FW_HANG_ASSERT_TYPE,
+ ATH12K_WMI_FW_HANG_DELAY);
+ } else {
+ return -EINVAL;
+ }
+
+ if (ret) {
+ ath12k_warn(ab, "failed to simulate firmware crash: %d\n", ret);
+ return ret;
+ }
+
+ return count;
+}
+
+static const struct file_operations fops_simulate_fw_crash = {
+ .read = ath12k_read_simulate_fw_crash,
+ .write = ath12k_write_simulate_fw_crash,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
+void ath12k_debugfs_pdev_create(struct ath12k_base *ab)
+{
+ debugfs_create_file("simulate_fw_crash", 0600, ab->debugfs_soc, ab,
+ &fops_simulate_fw_crash);
+}
+
static ssize_t ath12k_write_tpc_stats_type(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
@@ -16,6 +16,7 @@ void ath12k_debugfs_fw_stats_process(struct ath12k *ar,
struct ath12k_fw_stats *stats);
void ath12k_debugfs_op_vif_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
+void ath12k_debugfs_pdev_create(struct ath12k_base *ab);
static inline bool ath12k_debugfs_is_extd_rx_stats_enabled(struct ath12k *ar)
{
@@ -144,6 +145,10 @@ static inline void ath12k_debugfs_op_vif_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
}
+
+static inline void ath12k_debugfs_pdev_create(struct ath12k_base *ab)
+{
+}
#endif /* CONFIG_ATH12K_DEBUGFS */
#endif /* _ATH12K_DEBUGFS_H_ */
@@ -11976,6 +11976,7 @@ int ath12k_mac_allocate(struct ath12k_hw_group *ag)
if (!ab)
continue;
+ ath12k_debugfs_pdev_create(ab);
ath12k_mac_set_device_defaults(ab);
total_radio += ab->num_radios;
}