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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]> Signed-off-by: Felix Fietkau <[email protected]>
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// SPDX-License-Identifier: ISC | ||
/* Copyright (C) 2020 MediaTek Inc. */ | ||
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#include "mt7921.h" | ||
#include "eeprom.h" | ||
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static int | ||
mt7921_fw_debug_set(void *data, u64 val) | ||
{ | ||
struct mt7921_dev *dev = data; | ||
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dev->fw_debug = (u8)val; | ||
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mt7921_mcu_fw_log_2_host(dev, dev->fw_debug); | ||
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return 0; | ||
} | ||
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static int | ||
mt7921_fw_debug_get(void *data, u64 *val) | ||
{ | ||
struct mt7921_dev *dev = data; | ||
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*val = dev->fw_debug; | ||
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return 0; | ||
} | ||
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DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7921_fw_debug_get, | ||
mt7921_fw_debug_set, "%lld\n"); | ||
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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; | ||
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if (!phy) | ||
return; | ||
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/* Tx ampdu stat */ | ||
for (i = 0; i < ARRAY_SIZE(range); i++) | ||
range[i] = mt76_rr(dev, MT_MIB_ARNG(0, i)); | ||
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for (i = 0; i < ARRAY_SIZE(bound); i++) | ||
bound[i] = MT_MIB_ARNCR_RANGE(range[i / 4], i) + 1; | ||
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seq_printf(file, "\nPhy0\n"); | ||
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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]); | ||
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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"); | ||
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seq_printf(file, "BA miss count: %d\n", phy->mib.ba_miss_cnt); | ||
} | ||
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static int | ||
mt7921_tx_stats_read(struct seq_file *file, void *data) | ||
{ | ||
struct mt7921_dev *dev = file->private; | ||
int stat[8], i, n; | ||
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mt7921_ampdu_stat_read_phy(&dev->phy, file); | ||
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/* 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]; | ||
} | ||
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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"); | ||
} | ||
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return 0; | ||
} | ||
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static int | ||
mt7921_tx_stats_open(struct inode *inode, struct file *f) | ||
{ | ||
return single_open(f, mt7921_tx_stats_read, inode->i_private); | ||
} | ||
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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, | ||
}; | ||
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static int | ||
mt7921_queues_acq(struct seq_file *s, void *data) | ||
{ | ||
struct mt7921_dev *dev = dev_get_drvdata(s->private); | ||
int i; | ||
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for (i = 0; i < 16; i++) { | ||
int j, acs = i / 4, index = i % 4; | ||
u32 ctrl, val, qlen = 0; | ||
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val = mt76_rr(dev, MT_PLE_AC_QEMPTY(acs, index)); | ||
ctrl = BIT(31) | BIT(15) | (acs << 8); | ||
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for (j = 0; j < 32; j++) { | ||
if (val & BIT(j)) | ||
continue; | ||
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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); | ||
} | ||
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return 0; | ||
} | ||
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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; | ||
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for (i = 0; i < ARRAY_SIZE(queue_map); i++) { | ||
struct mt76_queue *q = queue_map[i].q; | ||
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if (!q) | ||
continue; | ||
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seq_printf(s, | ||
"%s: queued=%d head=%d tail=%d\n", | ||
queue_map[i].queue, q->queued, q->head, | ||
q->tail); | ||
} | ||
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return 0; | ||
} | ||
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int mt7921_init_debugfs(struct mt7921_dev *dev) | ||
{ | ||
struct dentry *dir; | ||
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dir = mt76_register_debugfs(&dev->mt76); | ||
if (!dir) | ||
return -ENOMEM; | ||
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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); | ||
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return 0; | ||
} |
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