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Message-ID:
<PAXPR04MB85104492780A4F7AAD99F40188462@PAXPR04MB8510.eurprd04.prod.outlook.com>
Date: Wed, 16 Oct 2024 01:33:55 +0000
From: Wei Fang <wei.fang@....com>
To: Frank Li <frank.li@....com>
CC: "davem@...emloft.net" <davem@...emloft.net>, "edumazet@...gle.com"
<edumazet@...gle.com>, "kuba@...nel.org" <kuba@...nel.org>,
"pabeni@...hat.com" <pabeni@...hat.com>, "robh@...nel.org" <robh@...nel.org>,
"krzk+dt@...nel.org" <krzk+dt@...nel.org>, "conor+dt@...nel.org"
<conor+dt@...nel.org>, Vladimir Oltean <vladimir.oltean@....com>, Claudiu
Manoil <claudiu.manoil@....com>, Clark Wang <xiaoning.wang@....com>,
"christophe.leroy@...roup.eu" <christophe.leroy@...roup.eu>,
"linux@...linux.org.uk" <linux@...linux.org.uk>, "bhelgaas@...gle.com"
<bhelgaas@...gle.com>, "horms@...nel.org" <horms@...nel.org>,
"imx@...ts.linux.dev" <imx@...ts.linux.dev>, "netdev@...r.kernel.org"
<netdev@...r.kernel.org>, "devicetree@...r.kernel.org"
<devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org"
<linux-kernel@...r.kernel.org>, "linux-pci@...r.kernel.org"
<linux-pci@...r.kernel.org>
Subject: RE: [PATCH v2 net-next 05/13] net: enetc: move some common interfaces
to enetc_pf_common.c
>
> On Tue, Oct 15, 2024 at 08:58:33PM +0800, Wei Fang wrote:
> > The ENETC of LS1028A is revision 1.0. Now, ENETC is used on the i.MX95
> > platform and the revision is upgraded to version 4.1. The two versions
> > are incompatible except for the station interface (SI) part. Therefore,
> > A new driver is needed for ENETC revision 4.1 and later. However, the
> > logic of some interfaces of the two drivers is basically the same, and
> > the only difference is the hardware configuration. In order to reuse
> > these interfaces and reduce code redundancy, so extract the interfaces
> > from enetc_pf.c and move them to enetc_pf_common.c. This is just the
> > first step, later enetc_pf_common.c will be compiled into a separate
> > driver for use by both PF drivers.
>
>
> Extract common ENETC parts for LS1028A and i.MX95 platforms
>
> The ENETC for LS1028A (rev 1.0) is incompatible with the version used on
> the i.MX95 platform (rev 4.1), except for the station interface (SI) part.
> To reduce code redundancy and prepare for a new driver for rev 4.1 and
> later, extract shared interfaces from enetc_pf.c and move them to
> enetc_pf_common.c. This refactoring lays the groundwork for compiling
> enetc_pf_common.c into a shared driver for both platforms' PF drivers.
>
Great, thanks.
> >
> > Signed-off-by: Wei Fang <wei.fang@....com>
> > ---
> > v2 changes:
> > This patch is separated from v1 patch 5 ("net: enetc: add enetc-pf-common
> > driver support"), it just moved some common functions from enetc_pf.c to
> > enetc_pf_common.c.
> > ---
> > drivers/net/ethernet/freescale/enetc/Makefile | 2 +-
> > .../net/ethernet/freescale/enetc/enetc_pf.c | 297 +-----------------
> > .../net/ethernet/freescale/enetc/enetc_pf.h | 13 +
> > .../freescale/enetc/enetc_pf_common.c | 294
> +++++++++++++++++
> > 4 files changed, 312 insertions(+), 294 deletions(-)
> > create mode 100644
> drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> >
> > diff --git a/drivers/net/ethernet/freescale/enetc/Makefile
> b/drivers/net/ethernet/freescale/enetc/Makefile
> > index 5c277910d538..39675e9ff39d 100644
> > --- a/drivers/net/ethernet/freescale/enetc/Makefile
> > +++ b/drivers/net/ethernet/freescale/enetc/Makefile
> > @@ -4,7 +4,7 @@ obj-$(CONFIG_FSL_ENETC_CORE) += fsl-enetc-core.o
> > fsl-enetc-core-y := enetc.o enetc_cbdr.o enetc_ethtool.o
> >
> > obj-$(CONFIG_FSL_ENETC) += fsl-enetc.o
> > -fsl-enetc-y := enetc_pf.o
> > +fsl-enetc-y := enetc_pf.o enetc_pf_common.o
> > fsl-enetc-$(CONFIG_PCI_IOV) += enetc_msg.o
> > fsl-enetc-$(CONFIG_FSL_ENETC_QOS) += enetc_qos.o
> >
> > diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> > index 8f6b0bf48139..3cdd149056f9 100644
> > --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> > +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
> > @@ -2,11 +2,8 @@
> > /* Copyright 2017-2019 NXP */
> >
> > #include <linux/unaligned.h>
> > -#include <linux/mdio.h>
> > #include <linux/module.h>
> > -#include <linux/fsl/enetc_mdio.h>
> > #include <linux/of_platform.h>
> > -#include <linux/of_mdio.h>
> > #include <linux/of_net.h>
> > #include <linux/pcs-lynx.h>
> > #include "enetc_ierb.h"
> > @@ -14,7 +11,7 @@
> >
> > #define ENETC_DRV_NAME_STR "ENETC PF driver"
> >
> > -static void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8
> *addr)
> > +void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8
> *addr)
> > {
> > u32 upper = __raw_readl(hw->port + ENETC_PSIPMAR0(si));
> > u16 lower = __raw_readw(hw->port + ENETC_PSIPMAR1(si));
> > @@ -23,8 +20,8 @@ static void enetc_pf_get_primary_mac_addr(struct
> enetc_hw *hw, int si, u8 *addr)
> > put_unaligned_le16(lower, addr + 4);
> > }
> >
> > -static void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si,
> > - const u8 *addr)
> > +void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si,
> > + const u8 *addr)
> > {
> > u32 upper = get_unaligned_le32(addr);
> > u16 lower = get_unaligned_le16(addr + 4);
> > @@ -33,20 +30,6 @@ static void enetc_pf_set_primary_mac_addr(struct
> enetc_hw *hw, int si,
> > __raw_writew(lower, hw->port + ENETC_PSIPMAR1(si));
> > }
> >
> > -static int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr)
> > -{
> > - struct enetc_ndev_priv *priv = netdev_priv(ndev);
> > - struct sockaddr *saddr = addr;
> > -
> > - if (!is_valid_ether_addr(saddr->sa_data))
> > - return -EADDRNOTAVAIL;
> > -
> > - eth_hw_addr_set(ndev, saddr->sa_data);
> > - enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data);
> > -
> > - return 0;
> > -}
> > -
> > static void enetc_set_vlan_promisc(struct enetc_hw *hw, char si_map)
> > {
> > u32 val = enetc_port_rd(hw, ENETC_PSIPVMR);
> > @@ -393,56 +376,6 @@ static int enetc_pf_set_vf_spoofchk(struct
> net_device *ndev, int vf, bool en)
> > return 0;
> > }
> >
> > -static int enetc_setup_mac_address(struct device_node *np, struct enetc_pf
> *pf,
> > - int si)
> > -{
> > - struct device *dev = &pf->si->pdev->dev;
> > - struct enetc_hw *hw = &pf->si->hw;
> > - u8 mac_addr[ETH_ALEN] = { 0 };
> > - int err;
> > -
> > - /* (1) try to get the MAC address from the device tree */
> > - if (np) {
> > - err = of_get_mac_address(np, mac_addr);
> > - if (err == -EPROBE_DEFER)
> > - return err;
> > - }
> > -
> > - /* (2) bootloader supplied MAC address */
> > - if (is_zero_ether_addr(mac_addr))
> > - enetc_pf_get_primary_mac_addr(hw, si, mac_addr);
> > -
> > - /* (3) choose a random one */
> > - if (is_zero_ether_addr(mac_addr)) {
> > - eth_random_addr(mac_addr);
> > - dev_info(dev, "no MAC address specified for SI%d, using %pM\n",
> > - si, mac_addr);
> > - }
> > -
> > - enetc_pf_set_primary_mac_addr(hw, si, mac_addr);
> > -
> > - return 0;
> > -}
> > -
> > -static int enetc_setup_mac_addresses(struct device_node *np,
> > - struct enetc_pf *pf)
> > -{
> > - int err, i;
> > -
> > - /* The PF might take its MAC from the device tree */
> > - err = enetc_setup_mac_address(np, pf, 0);
> > - if (err)
> > - return err;
> > -
> > - for (i = 0; i < pf->total_vfs; i++) {
> > - err = enetc_setup_mac_address(NULL, pf, i + 1);
> > - if (err)
> > - return err;
> > - }
> > -
> > - return 0;
> > -}
> > -
> > static void enetc_port_assign_rfs_entries(struct enetc_si *si)
> > {
> > struct enetc_pf *pf = enetc_si_priv(si);
> > @@ -775,187 +708,6 @@ static const struct net_device_ops
> enetc_ndev_ops = {
> > .ndo_xdp_xmit = enetc_xdp_xmit,
> > };
> >
> > -static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device
> *ndev,
> > - const struct net_device_ops *ndev_ops)
> > -{
> > - struct enetc_ndev_priv *priv = netdev_priv(ndev);
> > -
> > - SET_NETDEV_DEV(ndev, &si->pdev->dev);
> > - priv->ndev = ndev;
> > - priv->si = si;
> > - priv->dev = &si->pdev->dev;
> > - si->ndev = ndev;
> > -
> > - priv->msg_enable = (NETIF_MSG_WOL << 1) - 1;
> > - ndev->netdev_ops = ndev_ops;
> > - enetc_set_ethtool_ops(ndev);
> > - ndev->watchdog_timeo = 5 * HZ;
> > - ndev->max_mtu = ENETC_MAX_MTU;
> > -
> > - ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
> > - NETIF_F_HW_VLAN_CTAG_TX |
> NETIF_F_HW_VLAN_CTAG_RX |
> > - NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK |
> > - NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> > - ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
> > - NETIF_F_HW_VLAN_CTAG_TX |
> > - NETIF_F_HW_VLAN_CTAG_RX |
> > - NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> > - ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
> > - NETIF_F_TSO | NETIF_F_TSO6;
> > -
> > - if (si->num_rss)
> > - ndev->hw_features |= NETIF_F_RXHASH;
> > -
> > - ndev->priv_flags |= IFF_UNICAST_FLT;
> > - ndev->xdp_features = NETDEV_XDP_ACT_BASIC |
> NETDEV_XDP_ACT_REDIRECT |
> > - NETDEV_XDP_ACT_NDO_XMIT |
> NETDEV_XDP_ACT_RX_SG |
> > - NETDEV_XDP_ACT_NDO_XMIT_SG;
> > -
> > - if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) {
> > - priv->active_offloads |= ENETC_F_QCI;
> > - ndev->features |= NETIF_F_HW_TC;
> > - ndev->hw_features |= NETIF_F_HW_TC;
> > - }
> > -
> > - /* pick up primary MAC address from SI */
> > - enetc_load_primary_mac_addr(&si->hw, ndev);
> > -}
> > -
> > -static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np)
> > -{
> > - struct device *dev = &pf->si->pdev->dev;
> > - struct enetc_mdio_priv *mdio_priv;
> > - struct mii_bus *bus;
> > - int err;
> > -
> > - bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv));
> > - if (!bus)
> > - return -ENOMEM;
> > -
> > - bus->name = "Freescale ENETC MDIO Bus";
> > - bus->read = enetc_mdio_read_c22;
> > - bus->write = enetc_mdio_write_c22;
> > - bus->read_c45 = enetc_mdio_read_c45;
> > - bus->write_c45 = enetc_mdio_write_c45;
> > - bus->parent = dev;
> > - mdio_priv = bus->priv;
> > - mdio_priv->hw = &pf->si->hw;
> > - mdio_priv->mdio_base = ENETC_EMDIO_BASE;
> > - snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev));
> > -
> > - err = of_mdiobus_register(bus, np);
> > - if (err)
> > - return dev_err_probe(dev, err, "cannot register MDIO bus\n");
> > -
> > - pf->mdio = bus;
> > -
> > - return 0;
> > -}
> > -
> > -static void enetc_mdio_remove(struct enetc_pf *pf)
> > -{
> > - if (pf->mdio)
> > - mdiobus_unregister(pf->mdio);
> > -}
> > -
> > -static int enetc_imdio_create(struct enetc_pf *pf)
> > -{
> > - struct device *dev = &pf->si->pdev->dev;
> > - struct enetc_mdio_priv *mdio_priv;
> > - struct phylink_pcs *phylink_pcs;
> > - struct mii_bus *bus;
> > - int err;
> > -
> > - bus = mdiobus_alloc_size(sizeof(*mdio_priv));
> > - if (!bus)
> > - return -ENOMEM;
> > -
> > - bus->name = "Freescale ENETC internal MDIO Bus";
> > - bus->read = enetc_mdio_read_c22;
> > - bus->write = enetc_mdio_write_c22;
> > - bus->read_c45 = enetc_mdio_read_c45;
> > - bus->write_c45 = enetc_mdio_write_c45;
> > - bus->parent = dev;
> > - bus->phy_mask = ~0;
> > - mdio_priv = bus->priv;
> > - mdio_priv->hw = &pf->si->hw;
> > - mdio_priv->mdio_base = ENETC_PM_IMDIO_BASE;
> > - snprintf(bus->id, MII_BUS_ID_SIZE, "%s-imdio", dev_name(dev));
> > -
> > - err = mdiobus_register(bus);
> > - if (err) {
> > - dev_err(dev, "cannot register internal MDIO bus (%d)\n", err);
> > - goto free_mdio_bus;
> > - }
> > -
> > - phylink_pcs = lynx_pcs_create_mdiodev(bus, 0);
> > - if (IS_ERR(phylink_pcs)) {
> > - err = PTR_ERR(phylink_pcs);
> > - dev_err(dev, "cannot create lynx pcs (%d)\n", err);
> > - goto unregister_mdiobus;
> > - }
> > -
> > - pf->imdio = bus;
> > - pf->pcs = phylink_pcs;
> > -
> > - return 0;
> > -
> > -unregister_mdiobus:
> > - mdiobus_unregister(bus);
> > -free_mdio_bus:
> > - mdiobus_free(bus);
> > - return err;
> > -}
> > -
> > -static void enetc_imdio_remove(struct enetc_pf *pf)
> > -{
> > - if (pf->pcs)
> > - lynx_pcs_destroy(pf->pcs);
> > - if (pf->imdio) {
> > - mdiobus_unregister(pf->imdio);
> > - mdiobus_free(pf->imdio);
> > - }
> > -}
> > -
> > -static bool enetc_port_has_pcs(struct enetc_pf *pf)
> > -{
> > - return (pf->if_mode == PHY_INTERFACE_MODE_SGMII ||
> > - pf->if_mode == PHY_INTERFACE_MODE_1000BASEX ||
> > - pf->if_mode == PHY_INTERFACE_MODE_2500BASEX ||
> > - pf->if_mode == PHY_INTERFACE_MODE_USXGMII);
> > -}
> > -
> > -static int enetc_mdiobus_create(struct enetc_pf *pf, struct device_node
> *node)
> > -{
> > - struct device_node *mdio_np;
> > - int err;
> > -
> > - mdio_np = of_get_child_by_name(node, "mdio");
> > - if (mdio_np) {
> > - err = enetc_mdio_probe(pf, mdio_np);
> > -
> > - of_node_put(mdio_np);
> > - if (err)
> > - return err;
> > - }
> > -
> > - if (enetc_port_has_pcs(pf)) {
> > - err = enetc_imdio_create(pf);
> > - if (err) {
> > - enetc_mdio_remove(pf);
> > - return err;
> > - }
> > - }
> > -
> > - return 0;
> > -}
> > -
> > -static void enetc_mdiobus_destroy(struct enetc_pf *pf)
> > -{
> > - enetc_mdio_remove(pf);
> > - enetc_imdio_remove(pf);
> > -}
> > -
> > static struct phylink_pcs *
> > enetc_pl_mac_select_pcs(struct phylink_config *config, phy_interface_t
> iface)
> > {
> > @@ -1101,47 +853,6 @@ static const struct phylink_mac_ops
> enetc_mac_phylink_ops = {
> > .mac_link_down = enetc_pl_mac_link_down,
> > };
> >
> > -static int enetc_phylink_create(struct enetc_ndev_priv *priv,
> > - struct device_node *node)
> > -{
> > - struct enetc_pf *pf = enetc_si_priv(priv->si);
> > - struct phylink *phylink;
> > - int err;
> > -
> > - pf->phylink_config.dev = &priv->ndev->dev;
> > - pf->phylink_config.type = PHYLINK_NETDEV;
> > - pf->phylink_config.mac_capabilities = MAC_ASYM_PAUSE |
> MAC_SYM_PAUSE |
> > - MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD;
> > -
> > - __set_bit(PHY_INTERFACE_MODE_INTERNAL,
> > - pf->phylink_config.supported_interfaces);
> > - __set_bit(PHY_INTERFACE_MODE_SGMII,
> > - pf->phylink_config.supported_interfaces);
> > - __set_bit(PHY_INTERFACE_MODE_1000BASEX,
> > - pf->phylink_config.supported_interfaces);
> > - __set_bit(PHY_INTERFACE_MODE_2500BASEX,
> > - pf->phylink_config.supported_interfaces);
> > - __set_bit(PHY_INTERFACE_MODE_USXGMII,
> > - pf->phylink_config.supported_interfaces);
> > - phy_interface_set_rgmii(pf->phylink_config.supported_interfaces);
> > -
> > - phylink = phylink_create(&pf->phylink_config, of_fwnode_handle(node),
> > - pf->if_mode, &enetc_mac_phylink_ops);
> > - if (IS_ERR(phylink)) {
> > - err = PTR_ERR(phylink);
> > - return err;
> > - }
> > -
> > - priv->phylink = phylink;
> > -
> > - return 0;
> > -}
> > -
> > -static void enetc_phylink_destroy(struct enetc_ndev_priv *priv)
> > -{
> > - phylink_destroy(priv->phylink);
> > -}
> > -
> > /* Initialize the entire shared memory for the flow steering entries
> > * of this port (PF + VFs)
> > */
> > @@ -1338,7 +1049,7 @@ static int enetc_pf_probe(struct pci_dev *pdev,
> > if (err)
> > goto err_mdiobus_create;
> >
> > - err = enetc_phylink_create(priv, node);
> > + err = enetc_phylink_create(priv, node, &enetc_mac_phylink_ops);
> > if (err)
> > goto err_phylink_create;
> >
> > diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.h
> b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
> > index c26bd66e4597..92a26b09cf57 100644
> > --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.h
> > +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
> > @@ -58,3 +58,16 @@ struct enetc_pf {
> > int enetc_msg_psi_init(struct enetc_pf *pf);
> > void enetc_msg_psi_free(struct enetc_pf *pf);
> > void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int mbox_id, u16
> *status);
> > +
> > +void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8
> *addr);
> > +void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si,
> > + const u8 *addr);
> > +int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr);
> > +int enetc_setup_mac_addresses(struct device_node *np, struct enetc_pf
> *pf);
> > +void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
> > + const struct net_device_ops *ndev_ops);
> > +int enetc_mdiobus_create(struct enetc_pf *pf, struct device_node *node);
> > +void enetc_mdiobus_destroy(struct enetc_pf *pf);
> > +int enetc_phylink_create(struct enetc_ndev_priv *priv, struct device_node
> *node,
> > + const struct phylink_mac_ops *ops);
> > +void enetc_phylink_destroy(struct enetc_ndev_priv *priv);
> > diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> > new file mode 100644
> > index 000000000000..be6aec19b1f3
> > --- /dev/null
> > +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> > @@ -0,0 +1,294 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
> > +/* Copyright 2024 NXP */
>
> empty line here
Sure.
>
> > +#include <linux/fsl/enetc_mdio.h>
> > +#include <linux/of_mdio.h>
> > +#include <linux/of_net.h>
> > +#include <linux/pcs-lynx.h>
> > +
> > +#include "enetc_pf.h"
> > +
> > +int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr)
> > +{
> > + struct enetc_ndev_priv *priv = netdev_priv(ndev);
> > + struct sockaddr *saddr = addr;
> > +
> > + if (!is_valid_ether_addr(saddr->sa_data))
> > + return -EADDRNOTAVAIL;
> > +
> > + eth_hw_addr_set(ndev, saddr->sa_data);
> > + enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data);
> > +
> > + return 0;
> > +}
> > +
> > +static int enetc_setup_mac_address(struct device_node *np, struct enetc_pf
> *pf,
> > + int si)
> > +{
> > + struct device *dev = &pf->si->pdev->dev;
> > + struct enetc_hw *hw = &pf->si->hw;
> > + u8 mac_addr[ETH_ALEN] = { 0 };
> > + int err;
> > +
> > + /* (1) try to get the MAC address from the device tree */
> > + if (np) {
> > + err = of_get_mac_address(np, mac_addr);
> > + if (err == -EPROBE_DEFER)
> > + return err;
> > + }
> > +
> > + /* (2) bootloader supplied MAC address */
> > + if (is_zero_ether_addr(mac_addr))
> > + enetc_pf_get_primary_mac_addr(hw, si, mac_addr);
> > +
> > + /* (3) choose a random one */
> > + if (is_zero_ether_addr(mac_addr)) {
> > + eth_random_addr(mac_addr);
> > + dev_info(dev, "no MAC address specified for SI%d, using %pM\n",
> > + si, mac_addr);
> > + }
> > +
> > + enetc_pf_set_primary_mac_addr(hw, si, mac_addr);
> > +
> > + return 0;
> > +}
> > +
> > +int enetc_setup_mac_addresses(struct device_node *np, struct enetc_pf
> *pf)
> > +{
> > + int err, i;
> > +
> > + /* The PF might take its MAC from the device tree */
> > + err = enetc_setup_mac_address(np, pf, 0);
> > + if (err)
> > + return err;
> > +
> > + for (i = 0; i < pf->total_vfs; i++) {
> > + err = enetc_setup_mac_address(NULL, pf, i + 1);
> > + if (err)
> > + return err;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
> > + const struct net_device_ops *ndev_ops)
> > +{
> > + struct enetc_ndev_priv *priv = netdev_priv(ndev);
> > +
> > + SET_NETDEV_DEV(ndev, &si->pdev->dev);
> > + priv->ndev = ndev;
> > + priv->si = si;
> > + priv->dev = &si->pdev->dev;
> > + si->ndev = ndev;
> > +
> > + priv->msg_enable = (NETIF_MSG_WOL << 1) - 1;
> > + ndev->netdev_ops = ndev_ops;
> > + enetc_set_ethtool_ops(ndev);
> > + ndev->watchdog_timeo = 5 * HZ;
> > + ndev->max_mtu = ENETC_MAX_MTU;
> > +
> > + ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
> > + NETIF_F_HW_VLAN_CTAG_TX |
> NETIF_F_HW_VLAN_CTAG_RX |
> > + NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK |
> > + NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> > + ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
> > + NETIF_F_HW_VLAN_CTAG_TX |
> > + NETIF_F_HW_VLAN_CTAG_RX |
> > + NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> > + ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
> > + NETIF_F_TSO | NETIF_F_TSO6;
> > +
> > + if (si->num_rss)
> > + ndev->hw_features |= NETIF_F_RXHASH;
> > +
> > + ndev->priv_flags |= IFF_UNICAST_FLT;
> > + ndev->xdp_features = NETDEV_XDP_ACT_BASIC |
> NETDEV_XDP_ACT_REDIRECT |
> > + NETDEV_XDP_ACT_NDO_XMIT |
> NETDEV_XDP_ACT_RX_SG |
> > + NETDEV_XDP_ACT_NDO_XMIT_SG;
> > +
> > + if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) {
> > + priv->active_offloads |= ENETC_F_QCI;
> > + ndev->features |= NETIF_F_HW_TC;
> > + ndev->hw_features |= NETIF_F_HW_TC;
> > + }
> > +
> > + /* pick up primary MAC address from SI */
> > + enetc_load_primary_mac_addr(&si->hw, ndev);
> > +}
> > +
> > +static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np)
> > +{
> > + struct device *dev = &pf->si->pdev->dev;
> > + struct enetc_mdio_priv *mdio_priv;
> > + struct mii_bus *bus;
> > + int err;
> > +
> > + bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv));
> > + if (!bus)
> > + return -ENOMEM;
> > +
> > + bus->name = "Freescale ENETC MDIO Bus";
> > + bus->read = enetc_mdio_read_c22;
> > + bus->write = enetc_mdio_write_c22;
> > + bus->read_c45 = enetc_mdio_read_c45;
> > + bus->write_c45 = enetc_mdio_write_c45;
> > + bus->parent = dev;
> > + mdio_priv = bus->priv;
> > + mdio_priv->hw = &pf->si->hw;
> > + mdio_priv->mdio_base = ENETC_EMDIO_BASE;
> > + snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev));
> > +
> > + err = of_mdiobus_register(bus, np);
> > + if (err)
> > + return dev_err_probe(dev, err, "cannot register MDIO bus\n");
> > +
> > + pf->mdio = bus;
> > +
> > + return 0;
> > +}
> > +
> > +static void enetc_mdio_remove(struct enetc_pf *pf)
> > +{
> > + if (pf->mdio)
> > + mdiobus_unregister(pf->mdio);
> > +}
> > +
> > +static int enetc_imdio_create(struct enetc_pf *pf)
> > +{
> > + struct device *dev = &pf->si->pdev->dev;
> > + struct enetc_mdio_priv *mdio_priv;
> > + struct phylink_pcs *phylink_pcs;
> > + struct mii_bus *bus;
> > + int err;
> > +
> > + bus = mdiobus_alloc_size(sizeof(*mdio_priv));
> > + if (!bus)
> > + return -ENOMEM;
> > +
> > + bus->name = "Freescale ENETC internal MDIO Bus";
> > + bus->read = enetc_mdio_read_c22;
> > + bus->write = enetc_mdio_write_c22;
> > + bus->read_c45 = enetc_mdio_read_c45;
> > + bus->write_c45 = enetc_mdio_write_c45;
> > + bus->parent = dev;
> > + bus->phy_mask = ~0;
> > + mdio_priv = bus->priv;
> > + mdio_priv->hw = &pf->si->hw;
> > + mdio_priv->mdio_base = ENETC_PM_IMDIO_BASE;
> > + snprintf(bus->id, MII_BUS_ID_SIZE, "%s-imdio", dev_name(dev));
> > +
> > + err = mdiobus_register(bus);
> > + if (err) {
> > + dev_err(dev, "cannot register internal MDIO bus (%d)\n", err);
> > + goto free_mdio_bus;
> > + }
> > +
> > + phylink_pcs = lynx_pcs_create_mdiodev(bus, 0);
> > + if (IS_ERR(phylink_pcs)) {
> > + err = PTR_ERR(phylink_pcs);
> > + dev_err(dev, "cannot create lynx pcs (%d)\n", err);
> > + goto unregister_mdiobus;
> > + }
> > +
> > + pf->imdio = bus;
> > + pf->pcs = phylink_pcs;
> > +
> > + return 0;
> > +
> > +unregister_mdiobus:
> > + mdiobus_unregister(bus);
> > +free_mdio_bus:
> > + mdiobus_free(bus);
> > + return err;
> > +}
> > +
> > +static void enetc_imdio_remove(struct enetc_pf *pf)
> > +{
> > + if (pf->pcs)
> > + lynx_pcs_destroy(pf->pcs);
> > +
> > + if (pf->imdio) {
> > + mdiobus_unregister(pf->imdio);
> > + mdiobus_free(pf->imdio);
> > + }
> > +}
> > +
> > +static bool enetc_port_has_pcs(struct enetc_pf *pf)
> > +{
> > + return (pf->if_mode == PHY_INTERFACE_MODE_SGMII ||
> > + pf->if_mode == PHY_INTERFACE_MODE_1000BASEX ||
> > + pf->if_mode == PHY_INTERFACE_MODE_2500BASEX ||
> > + pf->if_mode == PHY_INTERFACE_MODE_USXGMII);
> > +}
> > +
> > +int enetc_mdiobus_create(struct enetc_pf *pf, struct device_node *node)
> > +{
> > + struct device_node *mdio_np;
> > + int err;
> > +
> > + mdio_np = of_get_child_by_name(node, "mdio");
> > + if (mdio_np) {
> > + err = enetc_mdio_probe(pf, mdio_np);
> > +
> > + of_node_put(mdio_np);
> > + if (err)
> > + return err;
> > + }
> > +
> > + if (enetc_port_has_pcs(pf)) {
> > + err = enetc_imdio_create(pf);
> > + if (err) {
> > + enetc_mdio_remove(pf);
> > + return err;
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +void enetc_mdiobus_destroy(struct enetc_pf *pf)
> > +{
> > + enetc_mdio_remove(pf);
> > + enetc_imdio_remove(pf);
> > +}
> > +
> > +int enetc_phylink_create(struct enetc_ndev_priv *priv, struct device_node
> *node,
> > + const struct phylink_mac_ops *ops)
> > +{
> > + struct enetc_pf *pf = enetc_si_priv(priv->si);
> > + struct phylink *phylink;
> > + int err;
> > +
> > + pf->phylink_config.dev = &priv->ndev->dev;
> > + pf->phylink_config.type = PHYLINK_NETDEV;
> > + pf->phylink_config.mac_capabilities = MAC_ASYM_PAUSE |
> MAC_SYM_PAUSE |
> > + MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD;
> > +
> > + __set_bit(PHY_INTERFACE_MODE_INTERNAL,
> > + pf->phylink_config.supported_interfaces);
> > + __set_bit(PHY_INTERFACE_MODE_SGMII,
> > + pf->phylink_config.supported_interfaces);
> > + __set_bit(PHY_INTERFACE_MODE_1000BASEX,
> > + pf->phylink_config.supported_interfaces);
> > + __set_bit(PHY_INTERFACE_MODE_2500BASEX,
> > + pf->phylink_config.supported_interfaces);
> > + __set_bit(PHY_INTERFACE_MODE_USXGMII,
> > + pf->phylink_config.supported_interfaces);
> > + phy_interface_set_rgmii(pf->phylink_config.supported_interfaces);
> > +
> > + phylink = phylink_create(&pf->phylink_config, of_fwnode_handle(node),
> > + pf->if_mode, ops);
> > + if (IS_ERR(phylink)) {
> > + err = PTR_ERR(phylink);
> > + return err;
> > + }
> > +
> > + priv->phylink = phylink;
> > +
> > + return 0;
> > +}
> > +
> > +void enetc_phylink_destroy(struct enetc_ndev_priv *priv)
> > +{
> > + phylink_destroy(priv->phylink);
> > +}
> > --
> > 2.34.1
> >
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