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Message-Id: <20250520-feature_poe_port_prio-v11-1-bbaf447e1b28@bootlin.com>
Date: Tue, 20 May 2025 18:11:03 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>, Oleksij Rempel <o.rempel@...gutronix.de>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Jonathan Corbet <corbet@....net>, Donald Hunter <donald.hunter@...il.com>,
Rob Herring <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>,
Simon Horman <horms@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
linux-doc@...r.kernel.org, Kyle Swenson <kyle.swenson@....tech>,
Dent Project <dentproject@...uxfoundation.org>, kernel@...gutronix.de,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
"Kory Maincent (Dent Project)" <kory.maincent@...tlin.com>
Subject: [PATCH net-next v11 01/13] net: pse-pd: Introduce attached_phydev
to pse control
From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>
In preparation for reporting PSE events via ethtool notifications,
introduce an attached_phydev field in the pse_control structure.
This field stores the phy_device associated with the PSE PI,
ensuring that notifications are sent to the correct network
interface.
The attached_phydev pointer is directly tied to the PHY lifecycle. It
is set when the PHY is registered and cleared when the PHY is removed.
There is no need to use a refcount, as doing so could interfere with
the PHY removal process.
Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
Change in v11:
- New patch due to a split of the next patch.
---
drivers/net/mdio/fwnode_mdio.c | 26 ++++++++++++++------------
drivers/net/pse-pd/pse_core.c | 11 ++++++++---
include/linux/pse-pd/pse.h | 6 ++++--
3 files changed, 26 insertions(+), 17 deletions(-)
diff --git a/drivers/net/mdio/fwnode_mdio.c b/drivers/net/mdio/fwnode_mdio.c
index aea0f0357568..9b41d4697a40 100644
--- a/drivers/net/mdio/fwnode_mdio.c
+++ b/drivers/net/mdio/fwnode_mdio.c
@@ -18,7 +18,8 @@ MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("FWNODE MDIO bus (Ethernet PHY) accessors");
static struct pse_control *
-fwnode_find_pse_control(struct fwnode_handle *fwnode)
+fwnode_find_pse_control(struct fwnode_handle *fwnode,
+ struct phy_device *phydev)
{
struct pse_control *psec;
struct device_node *np;
@@ -30,7 +31,7 @@ fwnode_find_pse_control(struct fwnode_handle *fwnode)
if (!np)
return NULL;
- psec = of_pse_control_get(np);
+ psec = of_pse_control_get(np, phydev);
if (PTR_ERR(psec) == -ENOENT)
return NULL;
@@ -128,15 +129,9 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus,
u32 phy_id;
int rc;
- psec = fwnode_find_pse_control(child);
- if (IS_ERR(psec))
- return PTR_ERR(psec);
-
mii_ts = fwnode_find_mii_timestamper(child);
- if (IS_ERR(mii_ts)) {
- rc = PTR_ERR(mii_ts);
- goto clean_pse;
- }
+ if (IS_ERR(mii_ts))
+ return PTR_ERR(mii_ts);
is_c45 = fwnode_device_is_compatible(child, "ethernet-phy-ieee802.3-c45");
if (is_c45 || fwnode_get_phy_id(child, &phy_id))
@@ -169,6 +164,12 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus,
goto clean_phy;
}
+ psec = fwnode_find_pse_control(child, phy);
+ if (IS_ERR(psec)) {
+ rc = PTR_ERR(psec);
+ goto unregister_phy;
+ }
+
phy->psec = psec;
/* phy->mii_ts may already be defined by the PHY driver. A
@@ -180,12 +181,13 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus,
return 0;
+unregister_phy:
+ if (is_acpi_node(child) || is_of_node(child))
+ phy_device_remove(phy);
clean_phy:
phy_device_free(phy);
clean_mii_ts:
unregister_mii_timestamper(mii_ts);
-clean_pse:
- pse_control_put(psec);
return rc;
}
diff --git a/drivers/net/pse-pd/pse_core.c b/drivers/net/pse-pd/pse_core.c
index 4602e26eb8c8..4610c1f0ddd6 100644
--- a/drivers/net/pse-pd/pse_core.c
+++ b/drivers/net/pse-pd/pse_core.c
@@ -23,6 +23,7 @@ static LIST_HEAD(pse_controller_list);
* @list: list entry for the pcdev's PSE controller list
* @id: ID of the PSE line in the PSE controller device
* @refcnt: Number of gets of this pse_control
+ * @attached_phydev: PHY device pointer attached by the PSE control
*/
struct pse_control {
struct pse_controller_dev *pcdev;
@@ -30,6 +31,7 @@ struct pse_control {
struct list_head list;
unsigned int id;
struct kref refcnt;
+ struct phy_device *attached_phydev;
};
static int of_load_single_pse_pi_pairset(struct device_node *node,
@@ -599,7 +601,8 @@ void pse_control_put(struct pse_control *psec)
EXPORT_SYMBOL_GPL(pse_control_put);
static struct pse_control *
-pse_control_get_internal(struct pse_controller_dev *pcdev, unsigned int index)
+pse_control_get_internal(struct pse_controller_dev *pcdev, unsigned int index,
+ struct phy_device *phydev)
{
struct pse_control *psec;
int ret;
@@ -638,6 +641,7 @@ pse_control_get_internal(struct pse_controller_dev *pcdev, unsigned int index)
psec->pcdev = pcdev;
list_add(&psec->list, &pcdev->pse_control_head);
psec->id = index;
+ psec->attached_phydev = phydev;
kref_init(&psec->refcnt);
return psec;
@@ -693,7 +697,8 @@ static int psec_id_xlate(struct pse_controller_dev *pcdev,
return pse_spec->args[0];
}
-struct pse_control *of_pse_control_get(struct device_node *node)
+struct pse_control *of_pse_control_get(struct device_node *node,
+ struct phy_device *phydev)
{
struct pse_controller_dev *r, *pcdev;
struct of_phandle_args args;
@@ -743,7 +748,7 @@ struct pse_control *of_pse_control_get(struct device_node *node)
}
/* pse_list_mutex also protects the pcdev's pse_control list */
- psec = pse_control_get_internal(pcdev, psec_id);
+ psec = pse_control_get_internal(pcdev, psec_id, phydev);
out:
mutex_unlock(&pse_list_mutex);
diff --git a/include/linux/pse-pd/pse.h b/include/linux/pse-pd/pse.h
index c773eeb92d04..8b0866fad2ad 100644
--- a/include/linux/pse-pd/pse.h
+++ b/include/linux/pse-pd/pse.h
@@ -250,7 +250,8 @@ struct device;
int devm_pse_controller_register(struct device *dev,
struct pse_controller_dev *pcdev);
-struct pse_control *of_pse_control_get(struct device_node *node);
+struct pse_control *of_pse_control_get(struct device_node *node,
+ struct phy_device *phydev);
void pse_control_put(struct pse_control *psec);
int pse_ethtool_get_status(struct pse_control *psec,
@@ -268,7 +269,8 @@ bool pse_has_c33(struct pse_control *psec);
#else
-static inline struct pse_control *of_pse_control_get(struct device_node *node)
+static inline struct pse_control *of_pse_control_get(struct device_node *node,
+ struct phy_device *phydev)
{
return ERR_PTR(-ENOENT);
}
--
2.34.1
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