diff mbox series

[net-next,v7,2/7] net: stmmac: Add dedicated XPCS cleanup method

Message ID 20240513-rzn1-gmac1-v7-2-6acf58b5440d@bootlin.com (mailing list archive)
State Accepted
Commit d5c50937d50f396ef97817e30361827ac5b166c2
Delegated to: Netdev Maintainers
Headers show
Series net: stmmac: Add support for RZN1 GMAC devices | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 934 this patch: 934
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/build_clang success Errors and warnings before: 936 this patch: 936
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 946 this patch: 946
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 52 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 59 this patch: 59
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-05-14--00-00 (tests: 1022)

Commit Message

Romain Gantois May 13, 2024, 7:25 a.m. UTC 
From: Serge Semin <fancer.lancer@gmail.com>

Currently the XPCS handler destruction is performed in the
stmmac_mdio_unregister() method. It doesn't look good because the handler
isn't originally created in the corresponding protagonist
stmmac_mdio_unregister(), but in the stmmac_xpcs_setup() function. In
order to have more coherent MDIO and XPCS setup/cleanup procedures,
let's move the DW XPCS destruction to the dedicated stmmac_pcs_clean()
method.

This method will also be used to cleanup PCS hardware using the
pcs_exit() callback that will be introduced to stmmac in a subsequent
patch.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Co-developed-by: Romain Gantois <romain.gantois@bootlin.com>
Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h      |  1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |  6 +++++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 14 +++++++++++---
 3 files changed, 17 insertions(+), 4 deletions(-)

Comments

Hariprasad Kelam May 13, 2024, 10:13 a.m. UTC | #1 
> From: Serge Semin <fancer.lancer@gmail.com>
> 
> Currently the XPCS handler destruction is performed in the
> stmmac_mdio_unregister() method. It doesn't look good because the handler
> isn't originally created in the corresponding protagonist
> stmmac_mdio_unregister(), but in the stmmac_xpcs_setup() function. In
> order to have more coherent MDIO and XPCS setup/cleanup procedures, let's
> move the DW XPCS destruction to the dedicated stmmac_pcs_clean()
> method.
> 
> This method will also be used to cleanup PCS hardware using the
> pcs_exit() callback that will be introduced to stmmac in a subsequent patch.
> 
> Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
> Co-developed-by: Romain Gantois <romain.gantois@bootlin.com>
> Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac.h      |  1 +
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |  6 +++++-
> drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 14 +++++++++++---
>  3 files changed, 17 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> index dddcaa9220cc3..badfe686a5702 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> @@ -361,6 +361,7 @@ int stmmac_mdio_unregister(struct net_device
> *ndev);  int stmmac_mdio_register(struct net_device *ndev);  int
> stmmac_mdio_reset(struct mii_bus *mii);  int stmmac_xpcs_setup(struct
> mii_bus *mii);
> +void stmmac_pcs_clean(struct net_device *ndev);
>  void stmmac_set_ethtool_ops(struct net_device *netdev);
> 
>  int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32
> systime_flags); diff --git
> a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 3d828904db0d3..0ac99c132733d 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -7789,8 +7789,9 @@ int stmmac_dvr_probe(struct device *device,
> 
>  error_netdev_register:
>  	phylink_destroy(priv->phylink);
> -error_xpcs_setup:
>  error_phy_setup:
> +	stmmac_pcs_clean(ndev);
> +error_xpcs_setup:
>  	if (priv->hw->pcs != STMMAC_PCS_TBI &&
>  	    priv->hw->pcs != STMMAC_PCS_RTBI)
>  		stmmac_mdio_unregister(ndev);
> @@ -7832,6 +7833,9 @@ void stmmac_dvr_remove(struct device *dev)
>  	if (priv->plat->stmmac_rst)
>  		reset_control_assert(priv->plat->stmmac_rst);
>  	reset_control_assert(priv->plat->stmmac_ahb_rst);
> +
> +	stmmac_pcs_clean(ndev);
> +
>  	if (priv->hw->pcs != STMMAC_PCS_TBI &&
>  	    priv->hw->pcs != STMMAC_PCS_RTBI)
>  		stmmac_mdio_unregister(ndev);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index 0542cfd1817e6..73ba9901a4439 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -523,6 +523,17 @@ int stmmac_xpcs_setup(struct mii_bus *bus)
>  	return 0;
>  }
> 
> +void stmmac_pcs_clean(struct net_device *ndev) {
> +	struct stmmac_priv *priv = netdev_priv(ndev);
> +
> +	if (!priv->hw->xpcs)
> +		return;
> +
> +	xpcs_destroy(priv->hw->xpcs);
> +	priv->hw->xpcs = NULL;
> +}
> +
>  /**
>   * stmmac_mdio_register
>   * @ndev: net device structure
> @@ -679,9 +690,6 @@ int stmmac_mdio_unregister(struct net_device *ndev)
>  	if (!priv->mii)
>  		return 0;
> 
> -	if (priv->hw->xpcs)
> -		xpcs_destroy(priv->hw->xpcs);
> -
>  	mdiobus_unregister(priv->mii);
>  	priv->mii->priv = NULL;
>  	mdiobus_free(priv->mii);
> 
> --
> 2.44.0
> 

Reviewed-by: Hariprasad Kelam <hkelam@marvell.com>
Serge Semin May 13, 2024, 11:12 a.m. UTC | #2 
Hi Romain

On Mon, May 13, 2024 at 09:25:13AM +0200, Romain Gantois wrote:
> From: Serge Semin <fancer.lancer@gmail.com>
> 
> Currently the XPCS handler destruction is performed in the
> stmmac_mdio_unregister() method. It doesn't look good because the handler
> isn't originally created in the corresponding protagonist
> stmmac_mdio_unregister(), but in the stmmac_xpcs_setup() function. In
> order to have more coherent MDIO and XPCS setup/cleanup procedures,
> let's move the DW XPCS destruction to the dedicated stmmac_pcs_clean()
> method.
> 
> This method will also be used to cleanup PCS hardware using the
> pcs_exit() callback that will be introduced to stmmac in a subsequent
> patch.
> 
> Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
> Co-developed-by: Romain Gantois <romain.gantois@bootlin.com>
> Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

Looking good. Thanks!
* Not sure whether my explicit Rb tag will be required in such the tags
disposition.)

-Serge(y)

> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac.h      |  1 +
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |  6 +++++-
>  drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 14 +++++++++++---
>  3 files changed, 17 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> index dddcaa9220cc3..badfe686a5702 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> @@ -361,6 +361,7 @@ int stmmac_mdio_unregister(struct net_device *ndev);
>  int stmmac_mdio_register(struct net_device *ndev);
>  int stmmac_mdio_reset(struct mii_bus *mii);
>  int stmmac_xpcs_setup(struct mii_bus *mii);
> +void stmmac_pcs_clean(struct net_device *ndev);
>  void stmmac_set_ethtool_ops(struct net_device *netdev);
>  
>  int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32 systime_flags);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 3d828904db0d3..0ac99c132733d 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -7789,8 +7789,9 @@ int stmmac_dvr_probe(struct device *device,
>  
>  error_netdev_register:
>  	phylink_destroy(priv->phylink);
> -error_xpcs_setup:
>  error_phy_setup:
> +	stmmac_pcs_clean(ndev);
> +error_xpcs_setup:
>  	if (priv->hw->pcs != STMMAC_PCS_TBI &&
>  	    priv->hw->pcs != STMMAC_PCS_RTBI)
>  		stmmac_mdio_unregister(ndev);
> @@ -7832,6 +7833,9 @@ void stmmac_dvr_remove(struct device *dev)
>  	if (priv->plat->stmmac_rst)
>  		reset_control_assert(priv->plat->stmmac_rst);
>  	reset_control_assert(priv->plat->stmmac_ahb_rst);
> +
> +	stmmac_pcs_clean(ndev);
> +
>  	if (priv->hw->pcs != STMMAC_PCS_TBI &&
>  	    priv->hw->pcs != STMMAC_PCS_RTBI)
>  		stmmac_mdio_unregister(ndev);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index 0542cfd1817e6..73ba9901a4439 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -523,6 +523,17 @@ int stmmac_xpcs_setup(struct mii_bus *bus)
>  	return 0;
>  }
>  
> +void stmmac_pcs_clean(struct net_device *ndev)
> +{
> +	struct stmmac_priv *priv = netdev_priv(ndev);
> +
> +	if (!priv->hw->xpcs)
> +		return;
> +
> +	xpcs_destroy(priv->hw->xpcs);
> +	priv->hw->xpcs = NULL;
> +}
> +
>  /**
>   * stmmac_mdio_register
>   * @ndev: net device structure
> @@ -679,9 +690,6 @@ int stmmac_mdio_unregister(struct net_device *ndev)
>  	if (!priv->mii)
>  		return 0;
>  
> -	if (priv->hw->xpcs)
> -		xpcs_destroy(priv->hw->xpcs);
> -
>  	mdiobus_unregister(priv->mii);
>  	priv->mii->priv = NULL;
>  	mdiobus_free(priv->mii);
> 
> -- 
> 2.44.0
>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index dddcaa9220cc3..badfe686a5702 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -361,6 +361,7 @@  int stmmac_mdio_unregister(struct net_device *ndev);
 int stmmac_mdio_register(struct net_device *ndev);
 int stmmac_mdio_reset(struct mii_bus *mii);
 int stmmac_xpcs_setup(struct mii_bus *mii);
+void stmmac_pcs_clean(struct net_device *ndev);
 void stmmac_set_ethtool_ops(struct net_device *netdev);
 
 int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32 systime_flags);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 3d828904db0d3..0ac99c132733d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7789,8 +7789,9 @@  int stmmac_dvr_probe(struct device *device,
 
 error_netdev_register:
 	phylink_destroy(priv->phylink);
-error_xpcs_setup:
 error_phy_setup:
+	stmmac_pcs_clean(ndev);
+error_xpcs_setup:
 	if (priv->hw->pcs != STMMAC_PCS_TBI &&
 	    priv->hw->pcs != STMMAC_PCS_RTBI)
 		stmmac_mdio_unregister(ndev);
@@ -7832,6 +7833,9 @@  void stmmac_dvr_remove(struct device *dev)
 	if (priv->plat->stmmac_rst)
 		reset_control_assert(priv->plat->stmmac_rst);
 	reset_control_assert(priv->plat->stmmac_ahb_rst);
+
+	stmmac_pcs_clean(ndev);
+
 	if (priv->hw->pcs != STMMAC_PCS_TBI &&
 	    priv->hw->pcs != STMMAC_PCS_RTBI)
 		stmmac_mdio_unregister(ndev);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 0542cfd1817e6..73ba9901a4439 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -523,6 +523,17 @@  int stmmac_xpcs_setup(struct mii_bus *bus)
 	return 0;
 }
 
+void stmmac_pcs_clean(struct net_device *ndev)
+{
+	struct stmmac_priv *priv = netdev_priv(ndev);
+
+	if (!priv->hw->xpcs)
+		return;
+
+	xpcs_destroy(priv->hw->xpcs);
+	priv->hw->xpcs = NULL;
+}
+
 /**
  * stmmac_mdio_register
  * @ndev: net device structure
@@ -679,9 +690,6 @@  int stmmac_mdio_unregister(struct net_device *ndev)
 	if (!priv->mii)
 		return 0;
 
-	if (priv->hw->xpcs)
-		xpcs_destroy(priv->hw->xpcs);
-
 	mdiobus_unregister(priv->mii);
 	priv->mii->priv = NULL;
 	mdiobus_free(priv->mii);