> On Mon, 2022-03-07 at 13:00 +0100, Lorenzo Bianconi wrote:
> > >
> > > Firmware initialization can take a while. Move mt7921_init_hw
> > > routine in
> > > a dedicated work in order to not slow down bootstrap process.
> > >
> > > Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
> >
> > Hi Sean and Deren,
> >
> > I tested this patch on mt7921e and mt7921u. Can you double check if
> > it
> > works fine even on mt7921s? Thanks.
> >
> > Regards,
> > Lorenzo
>
> Hi Lore,
Hi Deren,
>
> The patch is good on normal initial flow with mt7921s. However, if I
> run command "insmod mt7921s && rmmod mt7921s" quickly, there would be
> some problems in the remove process. The problem can be avoided if
> adding "cancel_work_sync(&dev->init_work)" in unregiser hook.
>
> I think the patch is still good now and we may need another patch to
> cover the stress problem.
>
> Tested-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
ack, I will include it in v2 as soon as the other pending patches are applied.
Thanks.
Regards,
Lorenzo
>
>
> >
> > > ---
> > > .../net/wireless/mediatek/mt76/mt7921/init.c | 66 +++++++++++++
> > > ------
> > > .../wireless/mediatek/mt76/mt7921/mt7921.h | 2 +
> > > 2 files changed, 49 insertions(+), 19 deletions(-)
> > >
> > > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > index fa6af85bba7b..332af886b95a 100644
> > > --- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > @@ -165,7 +165,7 @@ static int __mt7921_init_hardware(struct
> > > mt7921_dev *dev)
> > >
> > > static int mt7921_init_hardware(struct mt7921_dev *dev)
> > > {
> > > - int ret, idx, i;
> > > + int ret, i;
> > >
> > > set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
> > >
> > > @@ -182,6 +182,13 @@ static int mt7921_init_hardware(struct
> > > mt7921_dev *dev)
> > > return ret;
> > > }
> > >
> > > + return 0;
> > > +}
> > > +
> > > +static int mt7921_init_wcid(struct mt7921_dev *dev)
> > > +{
> > > + int idx;
> > > +
> > > /* Beacon and mgmt frames should occupy wcid 0 */
> > > idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA
> > > - 1);
> > > if (idx)
> > > @@ -195,6 +202,42 @@ static int mt7921_init_hardware(struct
> > > mt7921_dev *dev)
> > > return 0;
> > > }
> > >
> > > +static void mt7921_init_work(struct work_struct *work)
> > > +{
> > > + struct mt7921_dev *dev = container_of(work, struct
> > > mt7921_dev,
> > > + init_work);
> > > + int ret;
> > > +
> > > + ret = mt7921_init_hardware(dev);
> > > + if (ret)
> > > + return;
> > > +
> > > + mt76_set_stream_caps(&dev->mphy, true);
> > > + mt7921_set_stream_he_caps(&dev->phy);
> > > +
> > > + ret = mt76_register_device(&dev->mt76, true, mt76_rates,
> > > + ARRAY_SIZE(mt76_rates));
> > > + if (ret) {
> > > + dev_err(dev->mt76.dev, "register device failed\n");
> > > + return;
> > > + }
> > > +
> > > + ret = mt7921_init_debugfs(dev);
> > > + if (ret) {
> > > + dev_err(dev->mt76.dev, "debugfs register
> > > failed\n");
> > > + goto error;
> > > + }
> > > +
> > > + ret = mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev-
> > > >pm.ds_enable);
> > > + if (ret)
> > > + goto error;
> > > +
> > > + dev->hw_init_done = true;
> > > + return;
> > > +error:
> > > + mt76_unregister_device(&dev->mt76);
> > > +}
> > > +
> > > int mt7921_register_device(struct mt7921_dev *dev)
> > > {
> > > struct ieee80211_hw *hw = mt76_hw(dev);
> > > @@ -222,6 +265,7 @@ int mt7921_register_device(struct mt7921_dev
> > > *dev)
> > > spin_lock_init(&dev->sta_poll_lock);
> > >
> > > INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
> > > + INIT_WORK(&dev->init_work, mt7921_init_work);
> > >
> > > dev->pm.idle_timeout = MT7921_PM_TIMEOUT;
> > > dev->pm.stats.last_wake_event = jiffies;
> > > @@ -234,7 +278,7 @@ int mt7921_register_device(struct mt7921_dev
> > > *dev)
> > > if (mt76_is_sdio(&dev->mt76))
> > > hw->extra_tx_headroom += MT_SDIO_TXD_SIZE +
> > > MT_SDIO_HDR_SIZE;
> > >
> > > - ret = mt7921_init_hardware(dev);
> > > + ret = mt7921_init_wcid(dev);
> > > if (ret)
> > > return ret;
> > >
> > > @@ -262,23 +306,7 @@ int mt7921_register_device(struct mt7921_dev
> > > *dev)
> > > dev->mphy.hw->wiphy->available_antennas_rx = dev-
> > > >mphy.chainmask;
> > > dev->mphy.hw->wiphy->available_antennas_tx = dev-
> > > >mphy.chainmask;
> > >
> > > - mt76_set_stream_caps(&dev->mphy, true);
> > > - mt7921_set_stream_he_caps(&dev->phy);
> > > -
> > > - ret = mt76_register_device(&dev->mt76, true, mt76_rates,
> > > - ARRAY_SIZE(mt76_rates));
> > > - if (ret)
> > > - return ret;
> > > -
> > > - ret = mt7921_init_debugfs(dev);
> > > - if (ret)
> > > - return ret;
> > > -
> > > - ret = mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev-
> > > >pm.ds_enable);
> > > - if (ret)
> > > - return ret;
> > > -
> > > - dev->hw_init_done = true;
> > > + queue_work(system_wq, &dev->init_work);
> > >
> > > return 0;
> > > }
> > > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > > b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > > index 394a677140da..b6c8f84acb64 100644
> > > --- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > > @@ -204,6 +204,8 @@ struct mt7921_dev {
> > > struct list_head sta_poll_list;
> > > spinlock_t sta_poll_lock;
> > >
> > > + struct work_struct init_work;
> > > +
> > > u8 fw_debug;
> > >
> > > struct mt76_connac_pm pm;
> > > --
> > > 2.35.1
> > >
> >
> >
>
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