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mt76: mt7915: add debugfs knobs for MCU utilization

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Add debugfs knobs to read MCU utilization, which helps user know
firmware status more easily to narrow down CPU bottleneck issues.

Co-developed-by: Ryder Lee <[email protected]>
Signed-off-by: Ryder Lee <[email protected]>
Signed-off-by: Shayne Chen <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Shayne Chen
2021-10-23 07:27:06 +02:00
committed by Felix Fietkau
parent b52adf9815
commit ed3d8569c4
6 changed files with 75 additions and 4 deletions
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mt7915/debugfs.c
+50 -1
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@@ -106,6 +106,12 @@ mt7915_fw_debug_wm_set(void *data, u64 val)
return ret;
}
/* WM CPU info record control */
mt76_clear(dev, MT_CPU_UTIL_CTRL, BIT(0));
mt76_wr(dev, MT_DIC_CMD_REG_CMD, BIT(2) | BIT(13) | !dev->fw_debug_wm);
mt76_wr(dev, MT_MCU_WM_CIRQ_IRQ_MASK_CLR_ADDR, BIT(5));
mt76_wr(dev, MT_MCU_WM_CIRQ_IRQ_SOFT_ADDR, BIT(5));
return 0;
}
@@ -126,10 +132,16 @@ static int
mt7915_fw_debug_wa_set(void *data, u64 val)
{
struct mt7915_dev *dev = data;
int ret;
dev->fw_debug_wa = val ? MCU_FW_LOG_TO_HOST : 0;
return mt7915_mcu_fw_log_2_host(dev, MCU_FW_LOG_WA, dev->fw_debug_wa);
ret = mt7915_mcu_fw_log_2_host(dev, MCU_FW_LOG_WA, dev->fw_debug_wa);
if (ret)
return ret;
return mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET), MCU_WA_PARAM_PDMA_RX,
!!dev->fw_debug_wa, 0);
}
static int
@@ -145,6 +157,39 @@ mt7915_fw_debug_wa_get(void *data, u64 *val)
DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug_wa, mt7915_fw_debug_wa_get,
mt7915_fw_debug_wa_set, "%lld\n");
static int
mt7915_fw_util_wm_show(struct seq_file *file, void *data)
{
struct mt7915_dev *dev = file->private;
if (dev->fw_debug_wm) {
seq_printf(file, "Busy: %u%% Peak busy: %u%%\n",
mt76_rr(dev, MT_CPU_UTIL_BUSY_PCT),
mt76_rr(dev, MT_CPU_UTIL_PEAK_BUSY_PCT));
seq_printf(file, "Idle count: %u Peak idle count: %u\n",
mt76_rr(dev, MT_CPU_UTIL_IDLE_CNT),
mt76_rr(dev, MT_CPU_UTIL_PEAK_IDLE_CNT));
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mt7915_fw_util_wm);
static int
mt7915_fw_util_wa_show(struct seq_file *file, void *data)
{
struct mt7915_dev *dev = file->private;
if (dev->fw_debug_wa)
return mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(QUERY),
MCU_WA_PARAM_CPU_UTIL, 0, 0);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mt7915_fw_util_wa);
static void
mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy,
struct seq_file *file)
@@ -491,6 +536,10 @@ int mt7915_init_debugfs(struct mt7915_phy *phy)
debugfs_create_file("tx_stats", 0400, dir, phy, &mt7915_tx_stats_fops);
debugfs_create_file("fw_debug_wm", 0600, dir, dev, &fops_fw_debug_wm);
debugfs_create_file("fw_debug_wa", 0600, dir, dev, &fops_fw_debug_wa);
debugfs_create_file("fw_util_wm", 0400, dir, dev,
&mt7915_fw_util_wm_fops);
debugfs_create_file("fw_util_wa", 0400, dir, dev,
&mt7915_fw_util_wa_fops);
debugfs_create_file("implicit_txbf", 0600, dir, dev,
&fops_implicit_txbf);
debugfs_create_file("txpower_sku", 0400, dir, phy,