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From:   Deren Wu <deren.wu@mediatek.com>
To:     Felix Fietkau <nbd@nbd.name>, Lorenzo Bianconi <lorenzo@kernel.org>
CC:     Sean Wang <sean.wang@mediatek.com>,
        Ryder Lee <ryder.lee@mediatek.com>,
        Shayne Chen <shayne.chen@mediatek.com>,
        linux-wireless <linux-wireless@vger.kernel.org>,
        linux-mediatek <linux-mediatek@lists.infradead.org>,
        Deren Wu <deren.wu@mediatek.com>
Subject: [PATCH 15/17] wifi: mt76: mt7925: add debugfs.c
Date:   Tue, 1 Aug 2023 22:34:31 +0800
Message-ID: <167363384a162e4b697c0d5bdf95e50a04b22a34.1690864199.git.deren.wu@mediatek.com>
In-Reply-To: <cover.1690864199.git.deren.wu@mediatek.com>
References: <cover.1690864199.git.deren.wu@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

(Patches split into one patch per file for easier review, but the final
commit will be one big patch. See the cover letter for more info.)

Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
---
 .../wireless/mediatek/mt76/mt7925/debugfs.c   | 319 ++++++++++++++++++
 1 file changed, 319 insertions(+)
 create mode 100644 drivers/net/wireless/mediatek/mt76/mt7925/debugfs.c

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7925/debugfs.c
new file mode 100644
index 000000000000..1e2fc6577e78
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/debugfs.c
@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2023 MediaTek Inc. */
+
+#include "mt7925.h"
+#include "mcu.h"
+
+static int
+mt7925_reg_set(void *data, u64 val)
+{
+	struct mt792x_dev *dev = data;
+	u32 regval = val;
+
+	mt792x_mutex_acquire(dev);
+	mt7925_mcu_regval(dev, dev->mt76.debugfs_reg, &regval, true);
+	mt792x_mutex_release(dev);
+
+	return 0;
+}
+
+static int
+mt7925_reg_get(void *data, u64 *val)
+{
+	struct mt792x_dev *dev = data;
+	u32 regval;
+	int ret;
+
+	mt792x_mutex_acquire(dev);
+	ret = mt7925_mcu_regval(dev, dev->mt76.debugfs_reg, &regval, false);
+	mt792x_mutex_release(dev);
+	if (!ret)
+		*val = regval;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_regval, mt7925_reg_get, mt7925_reg_set,
+			 "0x%08llx\n");
+static int
+mt7925_fw_debug_set(void *data, u64 val)
+{
+	struct mt792x_dev *dev = data;
+
+	mt792x_mutex_acquire(dev);
+
+	dev->fw_debug = (u8)val;
+	mt7925_mcu_fw_log_2_host(dev, dev->fw_debug);
+
+	mt792x_mutex_release(dev);
+
+	return 0;
+}
+
+static int
+mt7925_fw_debug_get(void *data, u64 *val)
+{
+	struct mt792x_dev *dev = data;
+
+	*val = dev->fw_debug;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7925_fw_debug_get,
+			 mt7925_fw_debug_set, "%lld\n");
+
+DEFINE_SHOW_ATTRIBUTE(mt792x_tx_stats);
+
+static void
+mt7925_seq_puts_array(struct seq_file *file, const char *str,
+		      s8 val[][2], int len, u8 band_idx)
+{
+	int i;
+
+	seq_printf(file, "%-22s:", str);
+	for (i = 0; i < len; i++)
+		if (val[i][band_idx] == 127)
+			seq_printf(file, " %6s", "N.A");
+		else
+			seq_printf(file, " %6d", val[i][band_idx]);
+	seq_puts(file, "\n");
+}
+
+#define mt7925_print_txpwr_entry(prefix, rate, idx)	\
+({							\
+	mt7925_seq_puts_array(s, #prefix " (tmac)",	\
+			      txpwr->rate,		\
+			      ARRAY_SIZE(txpwr->rate),	\
+			      idx);			\
+})
+
+static inline void
+mt7925_eht_txpwr(struct seq_file *s, struct mt7925_txpwr *txpwr, u8 band_idx)
+{
+	seq_printf(s, "%-22s  %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7", "mcs8", "mcs9", "mcs10", "mcs11",
+		   "mcs12", "mcs13", "mcs14", "mcs15");
+	mt7925_print_txpwr_entry(EHT26, eht26, band_idx);
+	mt7925_print_txpwr_entry(EHT52, eht52, band_idx);
+	mt7925_print_txpwr_entry(EHT106, eht106, band_idx);
+	mt7925_print_txpwr_entry(EHT242, eht242, band_idx);
+	mt7925_print_txpwr_entry(EHT484, eht484, band_idx);
+
+	mt7925_print_txpwr_entry(EHT996, eht996, band_idx);
+	mt7925_print_txpwr_entry(EHT996x2, eht996x2, band_idx);
+	mt7925_print_txpwr_entry(EHT996x4, eht996x4, band_idx);
+	mt7925_print_txpwr_entry(EHT26_52, eht26_52, band_idx);
+	mt7925_print_txpwr_entry(EHT26_106, eht26_106, band_idx);
+	mt7925_print_txpwr_entry(EHT484_242, eht484_242, band_idx);
+	mt7925_print_txpwr_entry(EHT996_484, eht996_484, band_idx);
+	mt7925_print_txpwr_entry(EHT996_484_242, eht996_484_242, band_idx);
+	mt7925_print_txpwr_entry(EHT996x2_484, eht996x2_484, band_idx);
+	mt7925_print_txpwr_entry(EHT996x3, eht996x3, band_idx);
+	mt7925_print_txpwr_entry(EHT996x3_484, eht996x3_484, band_idx);
+}
+
+static int
+mt7925_txpwr(struct seq_file *s, void *data)
+{
+	struct mt792x_dev *dev = dev_get_drvdata(s->private);
+	struct mt7925_txpwr *txpwr = NULL;
+	u8 band_idx = dev->mphy.band_idx;
+	int ret = 0;
+
+	txpwr = devm_kmalloc(dev->mt76.dev, sizeof(*txpwr), GFP_KERNEL);
+
+	if (!txpwr)
+		return -ENOMEM;
+
+	mt792x_mutex_acquire(dev);
+	ret = mt7925_get_txpwr_info(dev, band_idx, txpwr);
+	mt792x_mutex_release(dev);
+
+	if (ret)
+		goto out;
+
+	seq_printf(s, "%-22s  %6s %6s %6s %6s\n",
+		   " ", "1m", "2m", "5m", "11m");
+	mt7925_print_txpwr_entry(CCK, cck, band_idx);
+
+	seq_printf(s, "%-22s  %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "6m", "9m", "12m", "18m", "24m", "36m",
+		   "48m", "54m");
+	mt7925_print_txpwr_entry(OFDM, ofdm, band_idx);
+
+	seq_printf(s, "%-22s  %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7");
+	mt7925_print_txpwr_entry(HT20, ht20, band_idx);
+
+	seq_printf(s, "%-22s  %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7", "mcs32");
+	mt7925_print_txpwr_entry(HT40, ht40, band_idx);
+
+	seq_printf(s, "%-22s  %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7", "mcs8", "mcs9", "mcs10", "mcs11");
+	mt7925_print_txpwr_entry(VHT20, vht20, band_idx);
+	mt7925_print_txpwr_entry(VHT40, vht40, band_idx);
+
+	mt7925_print_txpwr_entry(VHT80, vht80, band_idx);
+	mt7925_print_txpwr_entry(VHT160, vht160, band_idx);
+
+	mt7925_print_txpwr_entry(HE26, he26, band_idx);
+	mt7925_print_txpwr_entry(HE52, he52, band_idx);
+	mt7925_print_txpwr_entry(HE106, he106, band_idx);
+	mt7925_print_txpwr_entry(HE242, he242, band_idx);
+	mt7925_print_txpwr_entry(HE484, he484, band_idx);
+
+	mt7925_print_txpwr_entry(HE996, he996, band_idx);
+	mt7925_print_txpwr_entry(HE996x2, he996x2, band_idx);
+
+	mt7925_eht_txpwr(s, txpwr, band_idx);
+
+out:
+	devm_kfree(dev->mt76.dev, txpwr);
+	return ret;
+}
+
+static int
+mt7925_pm_set(void *data, u64 val)
+{
+	struct mt792x_dev *dev = data;
+	struct mt76_connac_pm *pm = &dev->pm;
+
+	if (mt76_is_usb(&dev->mt76))
+		return -EOPNOTSUPP;
+
+	mutex_lock(&dev->mt76.mutex);
+
+	if (val == pm->enable_user)
+		goto out;
+
+	if (!pm->enable_user) {
+		pm->stats.last_wake_event = jiffies;
+		pm->stats.last_doze_event = jiffies;
+	}
+	/* make sure the chip is awake here and ps_work is scheduled
+	 * just at end of the this routine.
+	 */
+	pm->enable = false;
+	mt76_connac_pm_wake(&dev->mphy, pm);
+
+	pm->enable_user = val;
+	mt7925_set_runtime_pm(dev);
+	mt76_connac_power_save_sched(&dev->mphy, pm);
+out:
+	mutex_unlock(&dev->mt76.mutex);
+
+	return 0;
+}
+
+static int
+mt7925_pm_get(void *data, u64 *val)
+{
+	struct mt792x_dev *dev = data;
+
+	*val = dev->pm.enable_user;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_pm, mt7925_pm_get, mt7925_pm_set, "%lld\n");
+
+static int
+mt7925_deep_sleep_set(void *data, u64 val)
+{
+	struct mt792x_dev *dev = data;
+	struct mt76_connac_pm *pm = &dev->pm;
+	bool monitor = !!(dev->mphy.hw->conf.flags & IEEE80211_CONF_MONITOR);
+	bool enable = !!val;
+
+	if (mt76_is_usb(&dev->mt76))
+		return -EOPNOTSUPP;
+
+	mt792x_mutex_acquire(dev);
+	if (pm->ds_enable_user == enable)
+		goto out;
+
+	pm->ds_enable_user = enable;
+	pm->ds_enable = enable && !monitor;
+	mt7925_mcu_set_deep_sleep(dev, pm->ds_enable);
+out:
+	mt792x_mutex_release(dev);
+
+	return 0;
+}
+
+static int
+mt7925_deep_sleep_get(void *data, u64 *val)
+{
+	struct mt792x_dev *dev = data;
+
+	*val = dev->pm.ds_enable_user;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_ds, mt7925_deep_sleep_get,
+			 mt7925_deep_sleep_set, "%lld\n");
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_pm_idle_timeout, mt792x_pm_idle_timeout_get,
+			 mt792x_pm_idle_timeout_set, "%lld\n");
+
+static int mt7925_chip_reset(void *data, u64 val)
+{
+	struct mt792x_dev *dev = data;
+	int ret = 0;
+
+	switch (val) {
+	case 1:
+		/* Reset wifisys directly. */
+		mt792x_reset(&dev->mt76);
+		break;
+	default:
+		/* Collect the core dump before reset wifisys. */
+		mt792x_mutex_acquire(dev);
+		ret = mt7925_mcu_chip_config(dev, "assert");
+		mt792x_mutex_release(dev);
+		break;
+	}
+
+	return ret;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_reset, NULL, mt7925_chip_reset, "%lld\n");
+
+int mt7925_init_debugfs(struct mt792x_dev *dev)
+{
+	struct dentry *dir;
+
+	dir = mt76_register_debugfs_fops(&dev->mphy, &fops_regval);
+	if (!dir)
+		return -ENOMEM;
+
+	if (mt76_is_mmio(&dev->mt76))
+		debugfs_create_devm_seqfile(dev->mt76.dev, "xmit-queues",
+					    dir, mt792x_queues_read);
+	else
+		debugfs_create_devm_seqfile(dev->mt76.dev, "xmit-queues",
+					    dir, mt76_queues_read);
+
+	debugfs_create_devm_seqfile(dev->mt76.dev, "acq", dir,
+				    mt792x_queues_acq);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "txpower_sku", dir,
+				    mt7925_txpwr);
+	debugfs_create_file("tx_stats", 0400, dir, dev, &mt792x_tx_stats_fops);
+	debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug);
+	debugfs_create_file("runtime-pm", 0600, dir, dev, &fops_pm);
+	debugfs_create_file("idle-timeout", 0600, dir, dev,
+			    &fops_pm_idle_timeout);
+	debugfs_create_file("chip_reset", 0600, dir, dev, &fops_reset);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "runtime_pm_stats", dir,
+				    mt792x_pm_stats);
+	debugfs_create_file("deep-sleep", 0600, dir, dev, &fops_ds);
+
+	return 0;
+}
-- 
2.18.0