1// SPDX-License-Identifier: BSD-3-Clause-Clear
  2/*
  3 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
  4 * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  5 */
  6
  7#include "core.h"
  8#include "debugfs.h"
  9#include "debugfs_htt_stats.h"
 10
 11static ssize_t ath12k_write_simulate_radar(struct file *file,
 12					   const char __user *user_buf,
 13					   size_t count, loff_t *ppos)
 14{
 15	struct ath12k *ar = file->private_data;
 16	int ret;
 17
 18	wiphy_lock(ath12k_ar_to_hw(ar)->wiphy);
 19	ret = ath12k_wmi_simulate_radar(ar);
 20	if (ret)
 21		goto exit;
 22
 23	ret = count;
 24exit:
 25	wiphy_unlock(ath12k_ar_to_hw(ar)->wiphy);
 26	return ret;
 27}
 28
 29static const struct file_operations fops_simulate_radar = {
 30	.write = ath12k_write_simulate_radar,
 31	.open = simple_open
 32};
 33
 34void ath12k_debugfs_soc_create(struct ath12k_base *ab)
 35{
 36	bool dput_needed;
 37	char soc_name[64] = { 0 };
 38	struct dentry *debugfs_ath12k;
 39
 40	debugfs_ath12k = debugfs_lookup("ath12k", NULL);
 41	if (debugfs_ath12k) {
 42		/* a dentry from lookup() needs dput() after we don't use it */
 43		dput_needed = true;
 44	} else {
 45		debugfs_ath12k = debugfs_create_dir("ath12k", NULL);
 46		if (IS_ERR_OR_NULL(debugfs_ath12k))
 47			return;
 48		dput_needed = false;
 49	}
 50
 51	scnprintf(soc_name, sizeof(soc_name), "%s-%s", ath12k_bus_str(ab->hif.bus),
 52		  dev_name(ab->dev));
 53
 54	ab->debugfs_soc = debugfs_create_dir(soc_name, debugfs_ath12k);
 55
 56	if (dput_needed)
 57		dput(debugfs_ath12k);
 58}
 59
 60void ath12k_debugfs_soc_destroy(struct ath12k_base *ab)
 61{
 62	debugfs_remove_recursive(ab->debugfs_soc);
 63	ab->debugfs_soc = NULL;
 64	/* We are not removing ath12k directory on purpose, even if it
 65	 * would be empty. This simplifies the directory handling and it's
 66	 * a minor cosmetic issue to leave an empty ath12k directory to
 67	 * debugfs.
 68	 */
 69}
 70
 71void ath12k_debugfs_register(struct ath12k *ar)
 72{
 73	struct ath12k_base *ab = ar->ab;
 74	struct ieee80211_hw *hw = ar->ah->hw;
 75	char pdev_name[5];
 76	char buf[100] = {0};
 77
 78	scnprintf(pdev_name, sizeof(pdev_name), "%s%d", "mac", ar->pdev_idx);
 79
 80	ar->debug.debugfs_pdev = debugfs_create_dir(pdev_name, ab->debugfs_soc);
 81
 82	/* Create a symlink under ieee80211/phy* */
 83	scnprintf(buf, sizeof(buf), "../../ath12k/%pd2", ar->debug.debugfs_pdev);
 84	ar->debug.debugfs_pdev_symlink = debugfs_create_symlink("ath12k",
 85								hw->wiphy->debugfsdir,
 86								buf);
 87
 88	if (ar->mac.sbands[NL80211_BAND_5GHZ].channels) {
 89		debugfs_create_file("dfs_simulate_radar", 0200,
 90				    ar->debug.debugfs_pdev, ar,
 91				    &fops_simulate_radar);
 92	}
 93
 94	ath12k_debugfs_htt_stats_register(ar);
 95}
 96
 97void ath12k_debugfs_unregister(struct ath12k *ar)
 98{
 99	if (!ar->debug.debugfs_pdev)
100		return;
101
102	/* Remove symlink under ieee80211/phy* */
103	debugfs_remove(ar->debug.debugfs_pdev_symlink);
104	debugfs_remove_recursive(ar->debug.debugfs_pdev);
105	ar->debug.debugfs_pdev_symlink = NULL;
106	ar->debug.debugfs_pdev = NULL;
107}