1 files changed, 463 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
new file mode 100644
index 000000000000..5278bee812f1
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -0,0 +1,463 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc. */
+
+#include "mt7915.h"
+#include "eeprom.h"
+
+/** global debugfs **/
+
+/* test knob of system layer 1/2 error recovery */
+static int mt7915_ser_trigger_set(void *data, u64 val)
+{
+	enum {
+		SER_SET_RECOVER_L1 = 1,
+		SER_SET_RECOVER_L2,
+		SER_ENABLE = 2,
+		SER_RECOVER
+	};
+	struct mt7915_dev *dev = data;
+	int ret = 0;
+
+	switch (val) {
+	case SER_SET_RECOVER_L1:
+	case SER_SET_RECOVER_L2:
+		/* fall through */
+		ret = mt7915_mcu_set_ser(dev, SER_ENABLE, BIT(val), 0);
+		if (ret)
+			return ret;
+
+		return mt7915_mcu_set_ser(dev, SER_RECOVER, val, 0);
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_ser_trigger, NULL,
+			 mt7915_ser_trigger_set, "%lld\n");
+
+static int
+mt7915_radar_trigger(void *data, u64 val)
+{
+	struct mt7915_dev *dev = data;
+
+	return mt7915_mcu_rdd_cmd(dev, RDD_RADAR_EMULATE, 1, 0, 0);
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_radar_trigger, NULL,
+			 mt7915_radar_trigger, "%lld\n");
+
+static int
+mt7915_dbdc_set(void *data, u64 val)
+{
+	struct mt7915_dev *dev = data;
+
+	if (val)
+		mt7915_register_ext_phy(dev);
+	else
+		mt7915_unregister_ext_phy(dev);
+
+	return 0;
+}
+
+static int
+mt7915_dbdc_get(void *data, u64 *val)
+{
+	struct mt7915_dev *dev = data;
+
+	*val = !!mt7915_ext_phy(dev);
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_dbdc, mt7915_dbdc_get,
+			 mt7915_dbdc_set, "%lld\n");
+
+static int
+mt7915_fw_debug_set(void *data, u64 val)
+{
+	struct mt7915_dev *dev = data;
+	enum {
+		DEBUG_TXCMD = 62,
+		DEBUG_CMD_RPT_TX,
+		DEBUG_CMD_RPT_TRIG,
+		DEBUG_SPL,
+		DEBUG_RPT_RX,
+	} debug;
+
+	dev->fw_debug = !!val;
+
+	mt7915_mcu_fw_log_2_host(dev, dev->fw_debug ? 2 : 0);
+
+	for (debug = DEBUG_TXCMD; debug <= DEBUG_RPT_RX; debug++)
+		mt7915_mcu_fw_dbg_ctrl(dev, debug, dev->fw_debug);
+
+	return 0;
+}
+
+static int
+mt7915_fw_debug_get(void *data, u64 *val)
+{
+	struct mt7915_dev *dev = data;
+
+	*val = dev->fw_debug;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7915_fw_debug_get,
+			 mt7915_fw_debug_set, "%lld\n");
+
+static void
+mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy,
+			   struct seq_file *file)
+{
+	struct mt7915_dev *dev = file->private;
+	bool ext_phy = phy != &dev->phy;
+	int bound[15], range[4], i, n;
+
+	if (!phy)
+		return;
+
+	/* Tx ampdu stat */
+	for (i = 0; i < ARRAY_SIZE(range); i++)
+		range[i] = mt76_rr(dev, MT_MIB_ARNG(ext_phy, i));
+
+	for (i = 0; i < ARRAY_SIZE(bound); i++)
+		bound[i] = MT_MIB_ARNCR_RANGE(range[i / 4], i) + 1;
+
+	seq_printf(file, "\nPhy %d\n", ext_phy);
+
+	seq_printf(file, "Length: %8d | ", bound[0]);
+	for (i = 0; i < ARRAY_SIZE(bound) - 1; i++)
+		seq_printf(file, "%3d -%3d | ",
+			   bound[i] + 1, bound[i + 1]);
+
+	seq_puts(file, "\nCount:  ");
+	n = ext_phy ? ARRAY_SIZE(dev->mt76.aggr_stats) / 2 : 0;
+	for (i = 0; i < ARRAY_SIZE(bound); i++)
+		seq_printf(file, "%8d | ", dev->mt76.aggr_stats[i + n]);
+	seq_puts(file, "\n");
+
+	seq_printf(file, "BA miss count: %d\n", phy->mib.ba_miss_cnt);
+}
+
+static void
+mt7915_txbf_stat_read_phy(struct mt7915_phy *phy, struct seq_file *s)
+{
+	struct mt7915_dev *dev = s->private;
+	bool ext_phy = phy != &dev->phy;
+	int cnt;
+
+	if (!phy)
+		return;
+
+	/* Tx Beamformer monitor */
+	seq_puts(s, "\nTx Beamformer applied PPDU counts: ");
+
+	cnt = mt76_rr(dev, MT_ETBF_TX_APP_CNT(ext_phy));
+	seq_printf(s, "iBF: %ld, eBF: %ld\n",
+		   FIELD_GET(MT_ETBF_TX_IBF_CNT, cnt),
+		   FIELD_GET(MT_ETBF_TX_EBF_CNT, cnt));
+
+	/* Tx Beamformer Rx feedback monitor */
+	seq_puts(s, "Tx Beamformer Rx feedback statistics: ");
+
+	cnt = mt76_rr(dev, MT_ETBF_RX_FB_CNT(ext_phy));
+	seq_printf(s, "All: %ld, HE: %ld, VHT: %ld, HT: %ld\n",
+		   FIELD_GET(MT_ETBF_RX_FB_ALL, cnt),
+		   FIELD_GET(MT_ETBF_RX_FB_HE, cnt),
+		   FIELD_GET(MT_ETBF_RX_FB_VHT, cnt),
+		   FIELD_GET(MT_ETBF_RX_FB_HT, cnt));
+
+	/* Tx Beamformee Rx NDPA & Tx feedback report */
+	cnt = mt76_rr(dev, MT_ETBF_TX_NDP_BFRP(ext_phy));
+	seq_printf(s, "Tx Beamformee successful feedback frames: %ld\n",
+		   FIELD_GET(MT_ETBF_TX_FB_CPL, cnt));
+	seq_printf(s, "Tx Beamformee feedback triggered counts: %ld\n",
+		   FIELD_GET(MT_ETBF_TX_FB_TRI, cnt));
+
+	/* Tx SU counters */
+	cnt = mt76_rr(dev, MT_MIB_DR11(ext_phy));
+	seq_printf(s, "Tx single-user successful MPDU counts: %d\n", cnt);
+
+	seq_puts(s, "\n");
+}
+
+static int
+mt7915_tx_stats_read(struct seq_file *file, void *data)
+{
+	struct mt7915_dev *dev = file->private;
+	int stat[8], i, n;
+
+	mt7915_ampdu_stat_read_phy(&dev->phy, file);
+	mt7915_txbf_stat_read_phy(&dev->phy, file);
+
+	mt7915_ampdu_stat_read_phy(mt7915_ext_phy(dev), file);
+	mt7915_txbf_stat_read_phy(mt7915_ext_phy(dev), file);
+
+	/* Tx amsdu info */
+	seq_puts(file, "Tx MSDU stat:\n");
+	for (i = 0, n = 0; i < ARRAY_SIZE(stat); i++) {
+		stat[i] = mt76_rr(dev,  MT_PLE_AMSDU_PACK_MSDU_CNT(i));
+		n += stat[i];
+	}
+
+	for (i = 0; i < ARRAY_SIZE(stat); i++) {
+		seq_printf(file, "AMSDU pack count of %d MSDU in TXD: 0x%x ",
+			   i + 1, stat[i]);
+		if (n != 0)
+			seq_printf(file, "(%d%%)\n", stat[i] * 100 / n);
+		else
+			seq_puts(file, "\n");
+	}
+
+	return 0;
+}
+
+static int
+mt7915_tx_stats_open(struct inode *inode, struct file *f)
+{
+	return single_open(f, mt7915_tx_stats_read, inode->i_private);
+}
+
+static const struct file_operations fops_tx_stats = {
+	.open = mt7915_tx_stats_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int mt7915_read_temperature(struct seq_file *s, void *data)
+{
+	struct mt7915_dev *dev = dev_get_drvdata(s->private);
+	int temp;
+
+	/* cpu */
+	temp = mt7915_mcu_get_temperature(dev, 0);
+	seq_printf(s, "Temperature: %d\n", temp);
+
+	return 0;
+}
+
+static int
+mt7915_queues_acq(struct seq_file *s, void *data)
+{
+	struct mt7915_dev *dev = dev_get_drvdata(s->private);
+	int i;
+
+	for (i = 0; i < 16; i++) {
+		int j, acs = i / 4, index = i % 4;
+		u32 ctrl, val, qlen = 0;
+
+		val = mt76_rr(dev, MT_PLE_AC_QEMPTY(acs, index));
+		ctrl = BIT(31) | BIT(15) | (acs << 8);
+
+		for (j = 0; j < 32; j++) {
+			if (val & BIT(j))
+				continue;
+
+			mt76_wr(dev, MT_PLE_FL_Q0_CTRL,
+				ctrl | (j + (index << 5)));
+			qlen += mt76_get_field(dev, MT_PLE_FL_Q3_CTRL,
+					       GENMASK(11, 0));
+		}
+		seq_printf(s, "AC%d%d: queued=%d\n", acs, index, qlen);
+	}
+
+	return 0;
+}
+
+static int
+mt7915_queues_read(struct seq_file *s, void *data)
+{
+	struct mt7915_dev *dev = dev_get_drvdata(s->private);
+	static const struct {
+		char *queue;
+		int id;
+	} queue_map[] = {
+		{ "WFDMA0", MT_TXQ_BE },
+		{ "MCUWM", MT_TXQ_MCU },
+		{ "MCUWA", MT_TXQ_MCU_WA },
+		{ "MCUFWQ", MT_TXQ_FWDL },
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(queue_map); i++) {
+		struct mt76_sw_queue *q = &dev->mt76.q_tx[queue_map[i].id];
+
+		if (!q->q)
+			continue;
+
+		seq_printf(s,
+			   "%s:	queued=%d head=%d tail=%d\n",
+			   queue_map[i].queue, q->q->queued, q->q->head,
+			   q->q->tail);
+	}
+
+	return 0;
+}
+
+static void
+mt7915_puts_rate_txpower(struct seq_file *s, s8 *delta,
+			 s8 txpower_cur, int band)
+{
+	static const char * const sku_group_name[] = {
+		"CCK", "OFDM", "HT20", "HT40",
+		"VHT20", "VHT40", "VHT80", "VHT160",
+		"RU26", "RU52", "RU106", "RU242/SU20",
+		"RU484/SU40", "RU996/SU80", "RU2x996/SU160"
+	};
+	s8 txpower[MT7915_SKU_RATE_NUM];
+	int i, idx = 0;
+
+	for (i = 0; i < MT7915_SKU_RATE_NUM; i++)
+		txpower[i] = DIV_ROUND_UP(txpower_cur + delta[i], 2);
+
+	for (i = 0; i < MAX_SKU_RATE_GROUP_NUM; i++) {
+		const struct sku_group *sku = &mt7915_sku_groups[i];
+		u32 offset = sku->offset[band];
+
+		if (!offset) {
+			idx += sku->len;
+			continue;
+		}
+
+		mt76_seq_puts_array(s, sku_group_name[i],
+				    txpower + idx, sku->len);
+		idx += sku->len;
+	}
+}
+
+static int
+mt7915_read_rate_txpower(struct seq_file *s, void *data)
+{
+	struct mt7915_dev *dev = dev_get_drvdata(s->private);
+	struct mt76_phy *mphy = &dev->mphy;
+	enum nl80211_band band = mphy->chandef.chan->band;
+	s8 *delta = dev->rate_power[band];
+	s8 txpower_base = mphy->txpower_cur - delta[MT7915_SKU_MAX_DELTA_IDX];
+
+	seq_puts(s, "Band 0:\n");
+	mt7915_puts_rate_txpower(s, delta, txpower_base, band);
+
+	if (dev->mt76.phy2) {
+		mphy = dev->mt76.phy2;
+		band = mphy->chandef.chan->band;
+		delta = dev->rate_power[band];
+		txpower_base = mphy->txpower_cur -
+			       delta[MT7915_SKU_MAX_DELTA_IDX];
+
+		seq_puts(s, "Band 1:\n");
+		mt7915_puts_rate_txpower(s, delta, txpower_base, band);
+	}
+
+	return 0;
+}
+
+int mt7915_init_debugfs(struct mt7915_dev *dev)
+{
+	struct dentry *dir;
+
+	dir = mt76_register_debugfs(&dev->mt76);
+	if (!dir)
+		return -ENOMEM;
+
+	debugfs_create_devm_seqfile(dev->mt76.dev, "queues", dir,
+				    mt7915_queues_read);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "acq", dir,
+				    mt7915_queues_acq);
+	debugfs_create_file("tx_stats", 0400, dir, dev, &fops_tx_stats);
+	debugfs_create_file("dbdc", 0600, dir, dev, &fops_dbdc);
+	debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug);
+	debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern);
+	/* test knobs */
+	debugfs_create_file("radar_trigger", 0200, dir, dev,
+			    &fops_radar_trigger);
+	debugfs_create_file("ser_trigger", 0200, dir, dev, &fops_ser_trigger);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "temperature", dir,
+				    mt7915_read_temperature);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "txpower_sku", dir,
+				    mt7915_read_rate_txpower);
+
+	return 0;
+}
+
+/** per-station debugfs **/
+
+/* usage: <tx mode> <ldpc> <stbc> <bw> <gi> <nss> <mcs> */
+static int mt7915_sta_fixed_rate_set(void *data, u64 rate)
+{
+	struct ieee80211_sta *sta = data;
+	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+
+	return mt7915_mcu_set_fixed_rate(msta->vif->dev, sta, rate);
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_fixed_rate, NULL,
+			 mt7915_sta_fixed_rate_set, "%llx\n");
+
+static int
+mt7915_sta_stats_read(struct seq_file *s, void *data)
+{
+	struct ieee80211_sta *sta = s->private;
+	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+	struct mt7915_sta_stats *stats = &msta->stats;
+	struct rate_info *rate = &stats->prob_rate;
+	static const char * const bw[] = {
+		"BW20", "BW5", "BW10", "BW40",
+		"BW80", "BW160", "BW_HE_RU"
+	};
+
+	if (!rate->legacy && !rate->flags)
+		return 0;
+
+	seq_puts(s, "Probing rate - ");
+	if (rate->flags & RATE_INFO_FLAGS_MCS)
+		seq_puts(s, "HT ");
+	else if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
+		seq_puts(s, "VHT ");
+	else if (rate->flags & RATE_INFO_FLAGS_HE_MCS)
+		seq_puts(s, "HE ");
+	else
+		seq_printf(s, "Bitrate %d\n", rate->legacy);
+
+	if (rate->flags) {
+		seq_printf(s, "%s NSS%d MCS%d ",
+			   bw[rate->bw], rate->nss, rate->mcs);
+
+		if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
+			seq_puts(s, "SGI ");
+		else if (rate->he_gi)
+			seq_puts(s, "HE GI ");
+
+		if (rate->he_dcm)
+			seq_puts(s, "DCM ");
+	}
+
+	seq_printf(s, "\nPPDU PER: %ld.%1ld%%\n",
+		   stats->per / 10, stats->per % 10);
+
+	return 0;
+}
+
+static int
+mt7915_sta_stats_open(struct inode *inode, struct file *f)
+{
+	return single_open(f, mt7915_sta_stats_read, inode->i_private);
+}
+
+static const struct file_operations fops_sta_stats = {
+	.open = mt7915_sta_stats_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+void mt7915_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			    struct ieee80211_sta *sta, struct dentry *dir)
+{
+	debugfs_create_file("fixed_rate", 0600, dir, sta, &fops_fixed_rate);
+	debugfs_create_file("stats", 0400, dir, sta, &fops_sta_stats);
+}