Commit f0ef433f authored by Russell King (Oracle)'s avatar Russell King (Oracle) Committed by Jakub Kicinski
Browse files

net: stmmac: introduce pcs_init/pcs_exit stmmac operations 



Introduce a mechanism whereby platforms can create their PCS instances
prior to the network device being published to userspace, but after
some of the core stmmac initialisation has been completed. This means
that the data structures that platforms need will be available.

Signed-off-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: default avatarSerge Semin <fancer.lancer@gmail.com>
Co-developed-by: default avatarRomain Gantois <romain.gantois@bootlin.com>
Signed-off-by: default avatarRomain Gantois <romain.gantois@bootlin.com>
Reviewed-by: default avatarHariprasad Kelam <hkelam@marvell.com>
Link: https://lore.kernel.org/r/20240513-rzn1-gmac1-v7-4-6acf58b5440d@bootlin.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f9cdff1b

drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c

+7 −1
Original line number Diff line number Diff line
@@ -505,7 +505,10 @@ int stmmac_pcs_setup(struct net_device *ndev) 
	priv = netdev_priv(ndev);

	mode = priv->plat->phy_interface;



	if (priv->plat->mdio_bus_data && priv->plat->mdio_bus_data->has_xpcs) {

	if (priv->plat->pcs_init) {

		ret = priv->plat->pcs_init(priv);

	} else if (priv->plat->mdio_bus_data &&

		   priv->plat->mdio_bus_data->has_xpcs) {

		/* Try to probe the XPCS by scanning all addresses */

		for (addr = 0; addr < PHY_MAX_ADDR; addr++) {

			xpcs = xpcs_create_mdiodev(priv->mii, addr, mode);
@@ -533,6 +536,9 @@ void stmmac_pcs_clean(struct net_device *ndev) 
{

	struct stmmac_priv *priv = netdev_priv(ndev);



	if (priv->plat->pcs_exit)

		priv->plat->pcs_exit(priv);



	if (!priv->hw->xpcs)

		return;

include/linux/stmmac.h

+2 −0
Original line number Diff line number Diff line
@@ -285,6 +285,8 @@ struct plat_stmmacenet_data { 
	int (*crosststamp)(ktime_t *device, struct system_counterval_t *system,

			   void *ctx);

	void (*dump_debug_regs)(void *priv);

	int (*pcs_init)(struct stmmac_priv *priv);

	void (*pcs_exit)(struct stmmac_priv *priv);

	void *bsp_priv;

	struct clk *stmmac_clk;

	struct clk *pclk;