From 5a8d4678e02bb3ab89191336b505dd7a7212c4e3 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Fri, 13 Sep 2019 09:05:54 +0200
Subject: [PATCH] mt76: mt7603: collect aggregation stats
Git-commit: 5a8d4678e02bb3ab89191336b505dd7a7212c4e3
Patch-mainline: v5.5-rc1
References: jsc#SLE-13430
Introduce ampdu_stat entry in mt7603 debugfs in order to dump 802.11
aggr cumulative statistics
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../net/wireless/mediatek/mt76/mt7603/debugfs.c | 36 ++++++++++++++++++++++
drivers/net/wireless/mediatek/mt76/mt7603/mac.c | 18 +++++++++++
drivers/net/wireless/mediatek/mt76/mt7603/main.c | 1 +
drivers/net/wireless/mediatek/mt76/mt7603/mt7603.h | 1 +
drivers/net/wireless/mediatek/mt76/mt7603/regs.h | 5 +++
5 files changed, 61 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7603/debugfs.c
index 45eb24862240..47c85a9fac28 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/debugfs.c
@@ -69,6 +69,41 @@ mt7603_edcca_get(void *data, u64 *val)
DEFINE_DEBUGFS_ATTRIBUTE(fops_edcca, mt7603_edcca_get,
mt7603_edcca_set, "%lld\n");
+static int
+mt7603_ampdu_stat_read(struct seq_file *file, void *data)
+{
+ struct mt7603_dev *dev = file->private;
+ int bound[3], i, range;
+
+ range = mt76_rr(dev, MT_AGG_ASRCR);
+ for (i = 0; i < ARRAY_SIZE(bound); i++)
+ bound[i] = MT_AGG_ASRCR_RANGE(range, i) + 1;
+
+ seq_printf(file, "Length: %8d | ", bound[0]);
+ for (i = 0; i < ARRAY_SIZE(bound) - 1; i++)
+ seq_printf(file, "%3d -%3d | ",
+ bound[i], 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");
+
+ return 0;
+}
+
+static int
+mt7603_ampdu_stat_open(struct inode *inode, struct file *f)
+{
+ return single_open(f, mt7603_ampdu_stat_read, inode->i_private);
+}
+
+static const struct file_operations fops_ampdu_stat = {
+ .open = mt7603_ampdu_stat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
void mt7603_init_debugfs(struct mt7603_dev *dev)
{
struct dentry *dir;
@@ -77,6 +112,7 @@ void mt7603_init_debugfs(struct mt7603_dev *dev)
if (!dir)
return;
+ debugfs_create_file("ampdu_stat", 0400, dir, dev, &fops_ampdu_stat);
debugfs_create_devm_seqfile(dev->mt76.dev, "queues", dir,
mt76_queues_read);
debugfs_create_file("edcca", 0600, dir, dev, &fops_edcca);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c
index c328192307c4..c52c4bf5597e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c
@@ -31,6 +31,16 @@ mt76_start_tx_ac(struct mt7603_dev *dev, u32 mask)
mt76_set(dev, MT_WF_ARB_TX_START_0, mt7603_ac_queue_mask0(mask));
}
+void mt7603_mac_reset_counters(struct mt7603_dev *dev)
+{
+ int i;
+
+ for (i = 0; i < 2; i++)
+ mt76_rr(dev, MT_TX_AGG_CNT(i));
+
+ memset(dev->mt76.aggr_stats, 0, sizeof(dev->mt76.aggr_stats));
+}
+
void mt7603_mac_set_timing(struct mt7603_dev *dev)
{
u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 231) |
@@ -1677,6 +1687,7 @@ void mt7603_mac_work(struct work_struct *work)
struct mt7603_dev *dev = container_of(work, struct mt7603_dev,
mt76.mac_work.work);
bool reset = false;
+ int i, idx;
mt76_tx_status_check(&dev->mt76, NULL, false);
@@ -1686,6 +1697,13 @@ void mt7603_mac_work(struct work_struct *work)
mt7603_update_channel(&dev->mt76);
mt7603_edcca_check(dev);
+ for (i = 0, idx = 0; i < 2; i++) {
+ u32 val = mt76_rr(dev, MT_TX_AGG_CNT(i));
+
+ dev->mt76.aggr_stats[idx++] += val & 0xffff;
+ dev->mt76.aggr_stats[idx++] += val >> 16;
+ }
+
if (dev->mac_work_count == 10)
mt7603_false_cca_check(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/main.c b/drivers/net/wireless/mediatek/mt76/mt7603/main.c
index 4b3217b43a04..9c378f017877 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/main.c
@@ -13,6 +13,7 @@ mt7603_start(struct ieee80211_hw *hw)
{
struct mt7603_dev *dev = hw->priv;
+ mt7603_mac_reset_counters(dev);
mt7603_mac_start(dev);
dev->mt76.survey_time = ktime_get_boottime();
set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mt7603.h b/drivers/net/wireless/mediatek/mt76/mt7603/mt7603.h
index 257300fec4f8..fb10adca17f3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/mt7603.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/mt7603.h
@@ -191,6 +191,7 @@ static inline void mt7603_irq_disable(struct mt7603_dev *dev, u32 mask)
mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0);
}
+void mt7603_mac_reset_counters(struct mt7603_dev *dev);
void mt7603_mac_dma_start(struct mt7603_dev *dev);
void mt7603_mac_start(struct mt7603_dev *dev);
void mt7603_mac_stop(struct mt7603_dev *dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/regs.h b/drivers/net/wireless/mediatek/mt76/mt7603/regs.h
index eb9eefe8e125..6e23ed3dfdff 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/regs.h
@@ -212,6 +212,9 @@
#define MT_AGG_PCR_RTS_THR GENMASK(19, 0)
#define MT_AGG_PCR_RTS_PKT_THR GENMASK(31, 25)
+#define MT_AGG_ASRCR MT_WF_AGG(0x060)
+#define MT_AGG_ASRCR_RANGE(val, n) (((val) >> ((n) << 3)) & GENMASK(5, 0))
+
#define MT_AGG_CONTROL MT_WF_AGG(0x070)
#define MT_AGG_CONTROL_NO_BA_RULE BIT(0)
#define MT_AGG_CONTROL_NO_BA_AR_RULE BIT(1)
@@ -555,6 +558,8 @@ enum {
#define MT_MIB_STAT_PSCCA MT_MIB_STAT(16)
#define MT_MIB_STAT_PSCCA_MASK GENMASK(23, 0)
+#define MT_TX_AGG_CNT(n) MT_MIB(0xa8 + ((n) << 2))
+
#define MT_MIB_STAT_ED MT_MIB_STAT(18)
#define MT_MIB_STAT_ED_MASK GENMASK(23, 0)
--
2.16.4