From: Sean Wang <[email protected]>
Add debugfs support to dump driver statistics and hardware details.
Co-developed-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Co-developed-by: Soul Huang <[email protected]>
Signed-off-by: Soul Huang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
---
.../wireless/mediatek/mt76/mt7921/debugfs.c | 178 ++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7921/init.c | 2 +-
2 files changed, 179 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
new file mode 100644
index 000000000000..9cdeb14cc933
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
@@ -0,0 +1,178 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc. */
+
+#include "mt7921.h"
+#include "eeprom.h"
+
+static int
+mt7921_fw_debug_set(void *data, u64 val)
+{
+ struct mt7921_dev *dev = data;
+
+ dev->fw_debug = (u8)val;
+
+ mt7921_mcu_fw_log_2_host(dev, dev->fw_debug);
+
+ return 0;
+}
+
+static int
+mt7921_fw_debug_get(void *data, u64 *val)
+{
+ struct mt7921_dev *dev = data;
+
+ *val = dev->fw_debug;
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7921_fw_debug_get,
+ mt7921_fw_debug_set, "%lld\n");
+
+static void
+mt7921_ampdu_stat_read_phy(struct mt7921_phy *phy,
+ struct seq_file *file)
+{
+ struct mt7921_dev *dev = file->private;
+ int bound[15], range[4], i;
+
+ if (!phy)
+ return;
+
+ /* Tx ampdu stat */
+ for (i = 0; i < ARRAY_SIZE(range); i++)
+ range[i] = mt76_rr(dev, MT_MIB_ARNG(0, i));
+
+ for (i = 0; i < ARRAY_SIZE(bound); i++)
+ bound[i] = MT_MIB_ARNCR_RANGE(range[i / 4], i) + 1;
+
+ seq_printf(file, "\nPhy0\n");
+
+ 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: ");
+ for (i = 0; i < ARRAY_SIZE(bound); i++)
+ seq_printf(file, "%8d | ", dev->mt76.aggr_stats[i]);
+ seq_puts(file, "\n");
+
+ seq_printf(file, "BA miss count: %d\n", phy->mib.ba_miss_cnt);
+}
+
+static int
+mt7921_tx_stats_read(struct seq_file *file, void *data)
+{
+ struct mt7921_dev *dev = file->private;
+ int stat[8], i, n;
+
+ mt7921_ampdu_stat_read_phy(&dev->phy, 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
+mt7921_tx_stats_open(struct inode *inode, struct file *f)
+{
+ return single_open(f, mt7921_tx_stats_read, inode->i_private);
+}
+
+static const struct file_operations fops_tx_stats = {
+ .open = mt7921_tx_stats_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int
+mt7921_queues_acq(struct seq_file *s, void *data)
+{
+ struct mt7921_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
+mt7921_queues_read(struct seq_file *s, void *data)
+{
+ struct mt7921_dev *dev = dev_get_drvdata(s->private);
+ struct {
+ struct mt76_queue *q;
+ char *queue;
+ } queue_map[] = {
+ { dev->mphy.q_tx[MT_TXQ_BE], "WFDMA0" },
+ { dev->mt76.q_mcu[MT_MCUQ_WM], "MCUWM" },
+ { dev->mt76.q_mcu[MT_MCUQ_FWDL], "MCUFWQ" },
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(queue_map); i++) {
+ struct mt76_queue *q = queue_map[i].q;
+
+ if (!q)
+ continue;
+
+ seq_printf(s,
+ "%s: queued=%d head=%d tail=%d\n",
+ queue_map[i].queue, q->queued, q->head,
+ q->tail);
+ }
+
+ return 0;
+}
+
+int mt7921_init_debugfs(struct mt7921_dev *dev)
+{
+ struct dentry *dir;
+
+ dir = mt76_register_debugfs(&dev->mt76);
+ if (!dir)
+ return -ENOMEM;
+
+ debugfs_create_devm_seqfile(dev->mt76.dev, "queues", dir,
+ mt7921_queues_read);
+ debugfs_create_devm_seqfile(dev->mt76.dev, "acq", dir,
+ mt7921_queues_acq);
+ debugfs_create_file("tx_stats", 0400, dir, dev, &fops_tx_stats);
+ debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug);
+
+ return 0;
+}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
index 33acc089eb6a..1ce87a4bfdd9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
@@ -232,7 +232,7 @@ int mt7921_register_device(struct mt7921_dev *dev)
ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
- return 0;
+ return mt7921_init_debugfs(dev);
}
void mt7921_unregister_device(struct mt7921_dev *dev)
--
2.25.1