6.12-stable review patch. If anyone has any objections, please let me know.
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From: Hans-Frieder Vogt hfdevel@gmx.net
[ Upstream commit 25b6a6d29d4082f6ac231c056ac321a996eb55c9 ]
In case of an AQR105-based device, create a software node for the mdio function, with a child node for the Aquantia AQR105 PHY, providing a firmware-name (and a bit more, which may be used for future checks) to allow the PHY to load a MAC specific firmware from the file system.
The name of the PHY software node follows the naming convention suggested in the patch for the mdiobus_scan function (in the same patch series).
Signed-off-by: Hans-Frieder Vogt hfdevel@gmx.net Reviewed-by: Andrew Lunn andrew@lunn.ch Link: https://patch.msgid.link/20250322-tn9510-v3a-v7-5-672a9a3d8628@gmx.net Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/tehuti/tn40.c | 5 +- drivers/net/ethernet/tehuti/tn40.h | 33 ++++++++++ drivers/net/ethernet/tehuti/tn40_mdio.c | 82 ++++++++++++++++++++++++- 3 files changed, 117 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/tehuti/tn40.c b/drivers/net/ethernet/tehuti/tn40.c index a6965258441c4..558b791a97edd 100644 --- a/drivers/net/ethernet/tehuti/tn40.c +++ b/drivers/net/ethernet/tehuti/tn40.c @@ -1778,7 +1778,7 @@ static int tn40_probe(struct pci_dev *pdev, const struct pci_device_id *ent) ret = tn40_phy_register(priv); if (ret) { dev_err(&pdev->dev, "failed to set up PHY.\n"); - goto err_free_irq; + goto err_cleanup_swnodes; }
ret = tn40_priv_init(priv); @@ -1795,6 +1795,8 @@ static int tn40_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return 0; err_unregister_phydev: tn40_phy_unregister(priv); +err_cleanup_swnodes: + tn40_swnodes_cleanup(priv); err_free_irq: pci_free_irq_vectors(pdev); err_unset_drvdata: @@ -1816,6 +1818,7 @@ static void tn40_remove(struct pci_dev *pdev) unregister_netdev(ndev);
tn40_phy_unregister(priv); + tn40_swnodes_cleanup(priv); pci_free_irq_vectors(priv->pdev); pci_set_drvdata(pdev, NULL); iounmap(priv->regs); diff --git a/drivers/net/ethernet/tehuti/tn40.h b/drivers/net/ethernet/tehuti/tn40.h index 490781fe51205..25da8686d4691 100644 --- a/drivers/net/ethernet/tehuti/tn40.h +++ b/drivers/net/ethernet/tehuti/tn40.h @@ -4,10 +4,13 @@ #ifndef _TN40_H_ #define _TN40_H_
+#include <linux/property.h> #include "tn40_regs.h"
#define TN40_DRV_NAME "tn40xx"
+#define PCI_DEVICE_ID_TEHUTI_TN9510 0x4025 + #define TN40_MDIO_SPEED_1MHZ (1) #define TN40_MDIO_SPEED_6MHZ (6)
@@ -102,10 +105,39 @@ struct tn40_txdb { int size; /* Number of elements in the db */ };
+#define NODE_PROP(_NAME, _PROP) ( \ + (const struct software_node) { \ + .name = _NAME, \ + .properties = _PROP, \ + }) + +#define NODE_PAR_PROP(_NAME, _PAR, _PROP) ( \ + (const struct software_node) { \ + .name = _NAME, \ + .parent = _PAR, \ + .properties = _PROP, \ + }) + +enum tn40_swnodes { + SWNODE_MDIO, + SWNODE_PHY, + SWNODE_MAX +}; + +struct tn40_nodes { + char phy_name[32]; + char mdio_name[32]; + struct property_entry phy_props[3]; + struct software_node swnodes[SWNODE_MAX]; + const struct software_node *group[SWNODE_MAX + 1]; +}; + struct tn40_priv { struct net_device *ndev; struct pci_dev *pdev;
+ struct tn40_nodes nodes; + struct napi_struct napi; /* RX FIFOs: 1 for data (full) descs, and 2 for free descs */ struct tn40_rxd_fifo rxd_fifo0; @@ -225,6 +257,7 @@ static inline void tn40_write_reg(struct tn40_priv *priv, u32 reg, u32 val)
int tn40_set_link_speed(struct tn40_priv *priv, u32 speed);
+void tn40_swnodes_cleanup(struct tn40_priv *priv); int tn40_mdiobus_init(struct tn40_priv *priv);
int tn40_phy_register(struct tn40_priv *priv); diff --git a/drivers/net/ethernet/tehuti/tn40_mdio.c b/drivers/net/ethernet/tehuti/tn40_mdio.c index af18615d64a8a..5bb0cbc87d064 100644 --- a/drivers/net/ethernet/tehuti/tn40_mdio.c +++ b/drivers/net/ethernet/tehuti/tn40_mdio.c @@ -14,6 +14,8 @@ (FIELD_PREP(TN40_MDIO_PRTAD_MASK, (port)))) #define TN40_MDIO_CMD_READ BIT(15)
+#define AQR105_FIRMWARE "tehuti/aqr105-tn40xx.cld" + static void tn40_mdio_set_speed(struct tn40_priv *priv, u32 speed) { void __iomem *regs = priv->regs; @@ -111,6 +113,56 @@ static int tn40_mdio_write_c45(struct mii_bus *mii_bus, int addr, int devnum, return tn40_mdio_write(mii_bus->priv, addr, devnum, regnum, val); }
+/* registers an mdio node and an aqr105 PHY at address 1 + * tn40_mdio-%id { + * ethernet-phy@1 { + * compatible = "ethernet-phy-id03a1.b4a3"; + * reg = <1>; + * firmware-name = AQR105_FIRMWARE; + * }; + * }; + */ +static int tn40_swnodes_register(struct tn40_priv *priv) +{ + struct tn40_nodes *nodes = &priv->nodes; + struct pci_dev *pdev = priv->pdev; + struct software_node *swnodes; + u32 id; + + id = pci_dev_id(pdev); + + snprintf(nodes->phy_name, sizeof(nodes->phy_name), "ethernet-phy@1"); + snprintf(nodes->mdio_name, sizeof(nodes->mdio_name), "tn40_mdio-%x", + id); + + swnodes = nodes->swnodes; + + swnodes[SWNODE_MDIO] = NODE_PROP(nodes->mdio_name, NULL); + + nodes->phy_props[0] = PROPERTY_ENTRY_STRING("compatible", + "ethernet-phy-id03a1.b4a3"); + nodes->phy_props[1] = PROPERTY_ENTRY_U32("reg", 1); + nodes->phy_props[2] = PROPERTY_ENTRY_STRING("firmware-name", + AQR105_FIRMWARE); + swnodes[SWNODE_PHY] = NODE_PAR_PROP(nodes->phy_name, + &swnodes[SWNODE_MDIO], + nodes->phy_props); + + nodes->group[SWNODE_PHY] = &swnodes[SWNODE_PHY]; + nodes->group[SWNODE_MDIO] = &swnodes[SWNODE_MDIO]; + return software_node_register_node_group(nodes->group); +} + +void tn40_swnodes_cleanup(struct tn40_priv *priv) +{ + /* cleanup of swnodes is only needed for AQR105-based cards */ + if (priv->pdev->device == PCI_DEVICE_ID_TEHUTI_TN9510) { + fwnode_handle_put(dev_fwnode(&priv->mdio->dev)); + device_remove_software_node(&priv->mdio->dev); + software_node_unregister_node_group(priv->nodes.group); + } +} + int tn40_mdiobus_init(struct tn40_priv *priv) { struct pci_dev *pdev = priv->pdev; @@ -129,14 +181,40 @@ int tn40_mdiobus_init(struct tn40_priv *priv)
bus->read_c45 = tn40_mdio_read_c45; bus->write_c45 = tn40_mdio_write_c45; + priv->mdio = bus; + + /* provide swnodes for AQR105-based cards only */ + if (pdev->device == PCI_DEVICE_ID_TEHUTI_TN9510) { + ret = tn40_swnodes_register(priv); + if (ret) { + pr_err("swnodes failed\n"); + return ret; + } + + ret = device_add_software_node(&bus->dev, + priv->nodes.group[SWNODE_MDIO]); + if (ret) { + dev_err(&pdev->dev, + "device_add_software_node failed: %d\n", ret); + goto err_swnodes_unregister; + } + }
ret = devm_mdiobus_register(&pdev->dev, bus); if (ret) { dev_err(&pdev->dev, "failed to register mdiobus %d %u %u\n", ret, bus->state, MDIOBUS_UNREGISTERED); - return ret; + goto err_swnodes_cleanup; } tn40_mdio_set_speed(priv, TN40_MDIO_SPEED_6MHZ); - priv->mdio = bus; return 0; + +err_swnodes_unregister: + software_node_unregister_node_group(priv->nodes.group); + return ret; +err_swnodes_cleanup: + tn40_swnodes_cleanup(priv); + return ret; } + +MODULE_FIRMWARE(AQR105_FIRMWARE);