[PATCH net-next v4 0/3] net: enetc: remove bootloader dependency

[PATCH net-next v4 0/3] net: enetc: remove bootloader dependency

[Michael Walle]

This is a resend [now a new v4] of the series because the conversion to the
phylink interface will likely take longer:
https://lore.kernel.org/netdev/CA+h21hpBodyY8CtNH2ktRdc2FqPi=Fjp94=VVZvzSVbnvnfKVg@mail.gmail.com/
Also the discussion in the v3 resend doesn't look like it will be resolved
soon :/
https://lore.kernel.org/netdev/20200701213433.9217-1-michael@walle.cc/

Unfortunately, we have boards in the wild with a bootloader which doesn't
set the PCS up correctly. Thus I'd really see this patches picked up as an
intermediate step until the phylink conversion is ready. Vladimir Oltean
already offered to convert enetc to phylink when he converts the felix to
phylink. After this series the PCS setup of the enetc looks almost the same
as the current felix setup. Thus conversion should be easy.

These patches were picked from the following series:
https://lore.kernel.org/netdev/1567779344-30965-1-git-send-email-claudiu.manoil@nxp.com/
They have never been resent. I've picked them up, addressed Andrews
comments, fixed some more bugs and asked Claudiu if I can keep their SOB
tags; he agreed. I've tested this on our board which happens to have a
bootloader which doesn't do the enetc setup in all cases. Though, only
SGMII mode was tested.

changes since v3:
 - rebased to latest net-next where devm_mdiobus_free() was removed.
   replace it by mdiobus_free(). The internal MDIO bus is optional, if
   there is any error, we try to run with the bootloader default PCS
   settings, thus in the error case, we need to free the mdiobus.

changes since v2:
 - removed SOBs from "net: enetc: Initialize SerDes for SGMII and USXGMII
   protocols" because almost everything has changed.
 - get a phy_device for the internal PCS PHY so we can use the phy_
   functions instead of raw mdiobus writes
 - reuse macros already defined in fsl_mdio.h, move missing bits from
   felix to fsl_mdio.h, because they share the same PCS PHY building
   block
 - added 2500BaseX mode (based on felix init routine)
 - changed xgmii mode to usxgmii mode, because it is actually USXGMII and
   felix does the same.
 - fixed devad, which is 0x1f (MMD_VEND2)

changes since v1:
 - mdiobus id is '"imdio-%s", dev_name(dev)' because the plain dev_name()
   is used by the emdio.
 - use mdiobus_write() instead of imdio->write(imdio, ..), since this is
   already a full featured mdiobus
 - set phy_mask to ~0 to avoid scanning the bus
 - use phy_interface_mode_is_rgmii(phy_mode) to also include the RGMII
   modes with pad delays.
 - move enetc_imdio_init() to enetc_pf.c, there shouldn't be any other
   users, should it?
 - renamed serdes to SerDes
 - printing the error code of mdiobus_register() in the error path
 - call mdiobus_unregister() on _remove()
 - call devm_mdiobus_free() if mdiobus_register() fails, since an
   error is not fatal

Alex Marginean (1):
  net: enetc: Use DT protocol information to set up the ports

Michael Walle (2):
  net: dsa: felix: move USXGMII defines to common place
  net: enetc: Initialize SerDes for SGMII and USXGMII protocols

 drivers/net/dsa/ocelot/felix_vsc9959.c        |  21 --
 .../net/ethernet/freescale/enetc/enetc_hw.h   |   3 +
 .../net/ethernet/freescale/enetc/enetc_pf.c   | 190 +++++++++++++++---
 .../net/ethernet/freescale/enetc/enetc_pf.h   |   5 +
 include/linux/fsl/enetc_mdio.h                |  19 ++
 5 files changed, 193 insertions(+), 45 deletions(-)

-- 
2.20.1

[PATCH net-next v4 1/3] net: dsa: felix: move USXGMII defines to common place

[Michael Walle]

The ENETC has the same PCS PHY and thus needs the same definitions. Move
them into the common enetc_mdio.h header which has already the macros
for the SGMII PCS.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/dsa/ocelot/felix_vsc9959.c | 21 ---------------------
 include/linux/fsl/enetc_mdio.h         | 19 +++++++++++++++++++
 2 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 19614537b1ba..53453c7015f6 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -16,29 +16,8 @@
 #define VSC9959_VCAP_IS2_CNT		1024
 #define VSC9959_VCAP_IS2_ENTRY_WIDTH	376
 #define VSC9959_VCAP_PORT_CNT		6
-
-/* TODO: should find a better place for these */
-#define USXGMII_BMCR_RESET		BIT(15)
-#define USXGMII_BMCR_AN_EN		BIT(12)
-#define USXGMII_BMCR_RST_AN		BIT(9)
-#define USXGMII_BMSR_LNKS(status)	(((status) & GENMASK(2, 2)) >> 2)
-#define USXGMII_BMSR_AN_CMPL(status)	(((status) & GENMASK(5, 5)) >> 5)
-#define USXGMII_ADVERTISE_LNKS(x)	(((x) << 15) & BIT(15))
-#define USXGMII_ADVERTISE_FDX		BIT(12)
-#define USXGMII_ADVERTISE_SPEED(x)	(((x) << 9) & GENMASK(11, 9))
-#define USXGMII_LPA_LNKS(lpa)		((lpa) >> 15)
-#define USXGMII_LPA_DUPLEX(lpa)		(((lpa) & GENMASK(12, 12)) >> 12)
-#define USXGMII_LPA_SPEED(lpa)		(((lpa) & GENMASK(11, 9)) >> 9)
-
 #define VSC9959_TAS_GCL_ENTRY_MAX	63
 
-enum usxgmii_speed {
-	USXGMII_SPEED_10	= 0,
-	USXGMII_SPEED_100	= 1,
-	USXGMII_SPEED_1000	= 2,
-	USXGMII_SPEED_2500	= 4,
-};
-
 static const u32 vsc9959_ana_regmap[] = {
 	REG(ANA_ADVLEARN,			0x0089a0),
 	REG(ANA_VLANMASK,			0x0089a4),
diff --git a/include/linux/fsl/enetc_mdio.h b/include/linux/fsl/enetc_mdio.h
index 2d9203314865..611a7b0d5f10 100644
--- a/include/linux/fsl/enetc_mdio.h
+++ b/include/linux/fsl/enetc_mdio.h
@@ -28,6 +28,25 @@ enum enetc_pcs_speed {
 	ENETC_PCS_SPEED_2500	= 2,
 };
 
+#define USXGMII_BMCR_RESET		BIT(15)
+#define USXGMII_BMCR_AN_EN		BIT(12)
+#define USXGMII_BMCR_RST_AN		BIT(9)
+#define USXGMII_BMSR_LNKS(status)	(((status) & GENMASK(2, 2)) >> 2)
+#define USXGMII_BMSR_AN_CMPL(status)	(((status) & GENMASK(5, 5)) >> 5)
+#define USXGMII_ADVERTISE_LNKS(x)	(((x) << 15) & BIT(15))
+#define USXGMII_ADVERTISE_FDX		BIT(12)
+#define USXGMII_ADVERTISE_SPEED(x)	(((x) << 9) & GENMASK(11, 9))
+#define USXGMII_LPA_LNKS(lpa)		((lpa) >> 15)
+#define USXGMII_LPA_DUPLEX(lpa)		(((lpa) & GENMASK(12, 12)) >> 12)
+#define USXGMII_LPA_SPEED(lpa)		(((lpa) & GENMASK(11, 9)) >> 9)
+
+enum usxgmii_speed {
+	USXGMII_SPEED_10	= 0,
+	USXGMII_SPEED_100	= 1,
+	USXGMII_SPEED_1000	= 2,
+	USXGMII_SPEED_2500	= 4,
+};
+
 struct enetc_hw;
 
 struct enetc_mdio_priv {
-- 
2.20.1

[PATCH net-next v4 2/3] net: enetc: Initialize SerDes for SGMII and USXGMII protocols

[Michael Walle]

ENETC has ethernet MACs capable of SGMII, 2500BaseX and USXGMII. But in
order to use these protocols some SerDes configurations need to be
performed. The SerDes is configurable via an internal PCS PHY which is
connected to an internal MDIO bus at address 0.

This patch basically removes the dependency on bootloader regarding
SerDes initialization.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 .../net/ethernet/freescale/enetc/enetc_hw.h   |   3 +
 .../net/ethernet/freescale/enetc/enetc_pf.c   | 137 ++++++++++++++++++
 .../net/ethernet/freescale/enetc/enetc_pf.h   |   2 +
 3 files changed, 142 insertions(+)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_hw.h b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
index fc357bc56835..135bf46354ea 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_hw.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
@@ -224,6 +224,9 @@ enum enetc_bdr_type {TX, RX};
 #define ENETC_PM0_MAXFRM	0x8014
 #define ENETC_SET_TX_MTU(val)	((val) << 16)
 #define ENETC_SET_MAXFRM(val)	((val) & 0xffff)
+
+#define ENETC_PM_IMDIO_BASE	0x8030
+
 #define ENETC_PM0_IF_MODE	0x8300
 #define ENETC_PMO_IFM_RG	BIT(2)
 #define ENETC_PM0_IFM_RLP	(BIT(5) | BIT(11))
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index 4fac57dbb3c8..cd7a061b05bf 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -833,6 +833,138 @@ static void enetc_of_put_phy(struct enetc_ndev_priv *priv)
 		of_node_put(priv->phy_node);
 }
 
+static int enetc_imdio_init(struct enetc_pf *pf, bool is_c45)
+{
+	struct device *dev = &pf->si->pdev->dev;
+	struct enetc_mdio_priv *mdio_priv;
+	struct phy_device *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;
+	bus->write = enetc_mdio_write;
+	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;
+	}
+
+	pcs = get_phy_device(bus, 0, is_c45);
+	if (IS_ERR(pcs)) {
+		err = PTR_ERR(pcs);
+		dev_err(dev, "cannot get internal PCS PHY (%d)\n", err);
+		goto unregister_mdiobus;
+	}
+
+	pf->imdio = bus;
+	pf->pcs = 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)
+		put_device(&pf->pcs->mdio.dev);
+	if (pf->imdio) {
+		mdiobus_unregister(pf->imdio);
+		mdiobus_free(pf->imdio);
+	}
+}
+
+static void enetc_configure_sgmii(struct phy_device *pcs)
+{
+	/* SGMII spec requires tx_config_Reg[15:0] to be exactly 0x4001
+	 * for the MAC PCS in order to acknowledge the AN.
+	 */
+	phy_write(pcs, MII_ADVERTISE, ADVERTISE_SGMII | ADVERTISE_LPACK);
+
+	phy_write(pcs, ENETC_PCS_IF_MODE,
+		  ENETC_PCS_IF_MODE_SGMII_EN |
+		  ENETC_PCS_IF_MODE_USE_SGMII_AN);
+
+	/* Adjust link timer for SGMII */
+	phy_write(pcs, ENETC_PCS_LINK_TIMER1, ENETC_PCS_LINK_TIMER1_VAL);
+	phy_write(pcs, ENETC_PCS_LINK_TIMER2, ENETC_PCS_LINK_TIMER2_VAL);
+
+	phy_write(pcs, MII_BMCR, BMCR_ANRESTART | BMCR_ANENABLE);
+}
+
+static void enetc_configure_2500basex(struct phy_device *pcs)
+{
+	phy_write(pcs, ENETC_PCS_IF_MODE,
+		  ENETC_PCS_IF_MODE_SGMII_EN |
+		  ENETC_PCS_IF_MODE_SGMII_SPEED(ENETC_PCS_SPEED_2500));
+
+	phy_write(pcs, MII_BMCR, BMCR_SPEED1000 | BMCR_FULLDPLX | BMCR_RESET);
+}
+
+static void enetc_configure_usxgmii(struct phy_device *pcs)
+{
+	/* Configure device ability for the USXGMII Replicator */
+	phy_write_mmd(pcs, MDIO_MMD_VEND2, MII_ADVERTISE,
+		      ADVERTISE_SGMII |
+		      ADVERTISE_LPACK |
+		      USXGMII_ADVERTISE_FDX);
+
+	/* Restart PCS AN */
+	phy_write_mmd(pcs, MDIO_MMD_VEND2, MII_BMCR,
+		      USXGMII_BMCR_RESET |
+		      USXGMII_BMCR_AN_EN |
+		      USXGMII_BMCR_RST_AN);
+}
+
+static int enetc_configure_serdes(struct enetc_ndev_priv *priv)
+{
+	bool is_c45 = priv->if_mode == PHY_INTERFACE_MODE_USXGMII;
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+	int err;
+
+	if (priv->if_mode != PHY_INTERFACE_MODE_SGMII &&
+	    priv->if_mode != PHY_INTERFACE_MODE_2500BASEX &&
+	    priv->if_mode != PHY_INTERFACE_MODE_USXGMII)
+		return 0;
+
+	err = enetc_imdio_init(pf, is_c45);
+	if (err)
+		return err;
+
+	switch (priv->if_mode) {
+	case PHY_INTERFACE_MODE_SGMII:
+		enetc_configure_sgmii(pf->pcs);
+		break;
+	case PHY_INTERFACE_MODE_2500BASEX:
+		enetc_configure_2500basex(pf->pcs);
+		break;
+	case PHY_INTERFACE_MODE_USXGMII:
+		enetc_configure_usxgmii(pf->pcs);
+		break;
+	default:
+		dev_err(&pf->si->pdev->dev, "Unsupported link mode %s\n",
+			phy_modes(priv->if_mode));
+	}
+
+	return 0;
+}
+
 static int enetc_pf_probe(struct pci_dev *pdev,
 			  const struct pci_device_id *ent)
 {
@@ -897,6 +1029,10 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 	if (err)
 		dev_warn(&pdev->dev, "Fallback to PHY-less operation\n");
 
+	err = enetc_configure_serdes(priv);
+	if (err)
+		dev_warn(&pdev->dev, "Attempted SerDes config but failed\n");
+
 	err = register_netdev(ndev);
 	if (err)
 		goto err_reg_netdev;
@@ -932,6 +1068,7 @@ static void enetc_pf_remove(struct pci_dev *pdev)
 	priv = netdev_priv(si->ndev);
 	unregister_netdev(si->ndev);
 
+	enetc_imdio_remove(pf);
 	enetc_mdio_remove(pf);
 	enetc_of_put_phy(priv);
 
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.h b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
index 59e65a6f6c3e..2cb922b59f46 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
@@ -44,6 +44,8 @@ struct enetc_pf {
 	DECLARE_BITMAP(active_vlans, VLAN_N_VID);
 
 	struct mii_bus *mdio; /* saved for cleanup */
+	struct mii_bus *imdio;
+	struct phy_device *pcs;
 };
 
 int enetc_msg_psi_init(struct enetc_pf *pf);
-- 
2.20.1

[PATCH net-next v4 3/3] net: enetc: Use DT protocol information to set up the ports

[Michael Walle]

From: Alex Marginean <alexandru.marginean@nxp.com>

Use DT information rather than in-band information from bootloader to
set up MAC for XGMII. For RGMII use the DT indication in addition to
RGMII defaults in hardware.
However, this implies that PHY connection information needs to be
extracted before netdevice creation, when the ENETC Port MAC is
being configured.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Michael Walle <michael@walle.cc>
---
 .../net/ethernet/freescale/enetc/enetc_pf.c   | 57 ++++++++++---------
 .../net/ethernet/freescale/enetc/enetc_pf.h   |  3 +
 2 files changed, 34 insertions(+), 26 deletions(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index cd7a061b05bf..dc370b3eebe7 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -481,7 +481,8 @@ static void enetc_port_si_configure(struct enetc_si *si)
 	enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS);
 }
 
-static void enetc_configure_port_mac(struct enetc_hw *hw)
+static void enetc_configure_port_mac(struct enetc_hw *hw,
+				     phy_interface_t phy_mode)
 {
 	enetc_port_wr(hw, ENETC_PM0_MAXFRM,
 		      ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE));
@@ -497,9 +498,11 @@ static void enetc_configure_port_mac(struct enetc_hw *hw)
 		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC |
 		      ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);
 	/* set auto-speed for RGMII */
-	if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG)
+	if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG ||
+	    phy_interface_mode_is_rgmii(phy_mode))
 		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_RGAUTO);
-	if (enetc_global_rd(hw, ENETC_G_EPFBLPR(1)) == ENETC_G_EPFBLPR1_XGMII)
+
+	if (phy_mode == PHY_INTERFACE_MODE_USXGMII)
 		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII);
 }
 
@@ -523,7 +526,7 @@ static void enetc_configure_port(struct enetc_pf *pf)
 
 	enetc_configure_port_pmac(hw);
 
-	enetc_configure_port_mac(hw);
+	enetc_configure_port_mac(hw, pf->if_mode);
 
 	enetc_port_si_configure(pf->si);
 
@@ -775,27 +778,27 @@ static void enetc_mdio_remove(struct enetc_pf *pf)
 		mdiobus_unregister(pf->mdio);
 }
 
-static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
+static int enetc_of_get_phy(struct enetc_pf *pf)
 {
-	struct enetc_pf *pf = enetc_si_priv(priv->si);
-	struct device_node *np = priv->dev->of_node;
+	struct device *dev = &pf->si->pdev->dev;
+	struct device_node *np = dev->of_node;
 	struct device_node *mdio_np;
 	int err;
 
-	priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
-	if (!priv->phy_node) {
+	pf->phy_node = of_parse_phandle(np, "phy-handle", 0);
+	if (!pf->phy_node) {
 		if (!of_phy_is_fixed_link(np)) {
-			dev_err(priv->dev, "PHY not specified\n");
+			dev_err(dev, "PHY not specified\n");
 			return -ENODEV;
 		}
 
 		err = of_phy_register_fixed_link(np);
 		if (err < 0) {
-			dev_err(priv->dev, "fixed link registration failed\n");
+			dev_err(dev, "fixed link registration failed\n");
 			return err;
 		}
 
-		priv->phy_node = of_node_get(np);
+		pf->phy_node = of_node_get(np);
 	}
 
 	mdio_np = of_get_child_by_name(np, "mdio");
@@ -803,15 +806,15 @@ static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
 		of_node_put(mdio_np);
 		err = enetc_mdio_probe(pf);
 		if (err) {
-			of_node_put(priv->phy_node);
+			of_node_put(pf->phy_node);
 			return err;
 		}
 	}
 
-	err = of_get_phy_mode(np, &priv->if_mode);
+	err = of_get_phy_mode(np, &pf->if_mode);
 	if (err) {
-		dev_err(priv->dev, "missing phy type\n");
-		of_node_put(priv->phy_node);
+		dev_err(dev, "missing phy type\n");
+		of_node_put(pf->phy_node);
 		if (of_phy_is_fixed_link(np))
 			of_phy_deregister_fixed_link(np);
 		else
@@ -823,14 +826,14 @@ static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
 	return 0;
 }
 
-static void enetc_of_put_phy(struct enetc_ndev_priv *priv)
+static void enetc_of_put_phy(struct enetc_pf *pf)
 {
-	struct device_node *np = priv->dev->of_node;
+	struct device_node *np = pf->si->pdev->dev.of_node;
 
 	if (np && of_phy_is_fixed_link(np))
 		of_phy_deregister_fixed_link(np);
-	if (priv->phy_node)
-		of_node_put(priv->phy_node);
+	if (pf->phy_node)
+		of_node_put(pf->phy_node);
 }
 
 static int enetc_imdio_init(struct enetc_pf *pf, bool is_c45)
@@ -996,6 +999,10 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 	pf->si = si;
 	pf->total_vfs = pci_sriov_get_totalvfs(pdev);
 
+	err = enetc_of_get_phy(pf);
+	if (err)
+		dev_warn(&pdev->dev, "Fallback to PHY-less operation\n");
+
 	enetc_configure_port(pf);
 
 	enetc_get_si_caps(si);
@@ -1010,6 +1017,8 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 	enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops);
 
 	priv = netdev_priv(ndev);
+	priv->phy_node = pf->phy_node;
+	priv->if_mode = pf->if_mode;
 
 	enetc_init_si_rings_params(priv);
 
@@ -1025,10 +1034,6 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 		goto err_alloc_msix;
 	}
 
-	err = enetc_of_get_phy(priv);
-	if (err)
-		dev_warn(&pdev->dev, "Fallback to PHY-less operation\n");
-
 	err = enetc_configure_serdes(priv);
 	if (err)
 		dev_warn(&pdev->dev, "Attempted SerDes config but failed\n");
@@ -1042,7 +1047,6 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 	return 0;
 
 err_reg_netdev:
-	enetc_of_put_phy(priv);
 	enetc_free_msix(priv);
 err_alloc_msix:
 	enetc_free_si_resources(priv);
@@ -1050,6 +1054,7 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 	si->ndev = NULL;
 	free_netdev(ndev);
 err_alloc_netdev:
+	enetc_of_put_phy(pf);
 err_map_pf_space:
 	enetc_pci_remove(pdev);
 
@@ -1070,7 +1075,7 @@ static void enetc_pf_remove(struct pci_dev *pdev)
 
 	enetc_imdio_remove(pf);
 	enetc_mdio_remove(pf);
-	enetc_of_put_phy(priv);
+	enetc_of_put_phy(pf);
 
 	enetc_free_msix(priv);
 
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.h b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
index 2cb922b59f46..0d0ee91282a5 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
@@ -46,6 +46,9 @@ struct enetc_pf {
 	struct mii_bus *mdio; /* saved for cleanup */
 	struct mii_bus *imdio;
 	struct phy_device *pcs;
+
+	struct device_node *phy_node;
+	phy_interface_t if_mode;
 };
 
 int enetc_msg_psi_init(struct enetc_pf *pf);
-- 
2.20.1

RE: [PATCH net-next v4 1/3] net: dsa: felix: move USXGMII defines to common place

[Claudiu Manoil]

>-----Original Message-----
>From: Michael Walle <michael@walle.cc>
>Sent: Tuesday, July 7, 2020 1:03 AM
[...]
>Subject: [PATCH net-next v4 1/3] net: dsa: felix: move USXGMII defines to
>common place
>
>The ENETC has the same PCS PHY and thus needs the same definitions. Move
>them into the common enetc_mdio.h header which has already the macros
>for the SGMII PCS.
>
>Signed-off-by: Michael Walle <michael@walle.cc>

Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>

RE: [PATCH net-next v4 2/3] net: enetc: Initialize SerDes for SGMII and USXGMII protocols

[Claudiu Manoil]

>-----Original Message-----
>From: Michael Walle <michael@walle.cc>
>Sent: Tuesday, July 7, 2020 1:03 AM
[...]
>Subject: [PATCH net-next v4 2/3] net: enetc: Initialize SerDes for SGMII and
>USXGMII protocols
>
>ENETC has ethernet MACs capable of SGMII, 2500BaseX and USXGMII. But in
>order to use these protocols some SerDes configurations need to be
>performed. The SerDes is configurable via an internal PCS PHY which is
>connected to an internal MDIO bus at address 0.
>
>This patch basically removes the dependency on bootloader regarding
>SerDes initialization.
>
>Signed-off-by: Michael Walle <michael@walle.cc>

Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>

Re: [PATCH net-next v4 1/3] net: dsa: felix: move USXGMII defines to common place

[Russell King - ARM Linux admin]

On Tue, Jul 07, 2020 at 12:02:53AM +0200, Michael Walle wrote:
> The ENETC has the same PCS PHY and thus needs the same definitions. Move
> them into the common enetc_mdio.h header which has already the macros
> for the SGMII PCS.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  drivers/net/dsa/ocelot/felix_vsc9959.c | 21 ---------------------
>  include/linux/fsl/enetc_mdio.h         | 19 +++++++++++++++++++
>  2 files changed, 19 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
> index 19614537b1ba..53453c7015f6 100644
> --- a/drivers/net/dsa/ocelot/felix_vsc9959.c
> +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
> @@ -16,29 +16,8 @@
>  #define VSC9959_VCAP_IS2_CNT		1024
>  #define VSC9959_VCAP_IS2_ENTRY_WIDTH	376
>  #define VSC9959_VCAP_PORT_CNT		6
> -
> -/* TODO: should find a better place for these */
> -#define USXGMII_BMCR_RESET		BIT(15)
> -#define USXGMII_BMCR_AN_EN		BIT(12)
> -#define USXGMII_BMCR_RST_AN		BIT(9)
> -#define USXGMII_BMSR_LNKS(status)	(((status) & GENMASK(2, 2)) >> 2)
> -#define USXGMII_BMSR_AN_CMPL(status)	(((status) & GENMASK(5, 5)) >> 5)
> -#define USXGMII_ADVERTISE_LNKS(x)	(((x) << 15) & BIT(15))
> -#define USXGMII_ADVERTISE_FDX		BIT(12)
> -#define USXGMII_ADVERTISE_SPEED(x)	(((x) << 9) & GENMASK(11, 9))
> -#define USXGMII_LPA_LNKS(lpa)		((lpa) >> 15)
> -#define USXGMII_LPA_DUPLEX(lpa)		(((lpa) & GENMASK(12, 12)) >> 12)
> -#define USXGMII_LPA_SPEED(lpa)		(((lpa) & GENMASK(11, 9)) >> 9)
> -
>  #define VSC9959_TAS_GCL_ENTRY_MAX	63
>  
> -enum usxgmii_speed {
> -	USXGMII_SPEED_10	= 0,
> -	USXGMII_SPEED_100	= 1,
> -	USXGMII_SPEED_1000	= 2,
> -	USXGMII_SPEED_2500	= 4,
> -};
> -
>  static const u32 vsc9959_ana_regmap[] = {
>  	REG(ANA_ADVLEARN,			0x0089a0),
>  	REG(ANA_VLANMASK,			0x0089a4),
> diff --git a/include/linux/fsl/enetc_mdio.h b/include/linux/fsl/enetc_mdio.h
> index 2d9203314865..611a7b0d5f10 100644
> --- a/include/linux/fsl/enetc_mdio.h
> +++ b/include/linux/fsl/enetc_mdio.h
> @@ -28,6 +28,25 @@ enum enetc_pcs_speed {
>  	ENETC_PCS_SPEED_2500	= 2,
>  };
>  
> +#define USXGMII_BMCR_RESET		BIT(15)
> +#define USXGMII_BMCR_AN_EN		BIT(12)
> +#define USXGMII_BMCR_RST_AN		BIT(9)

Aren't these just redefinitions of the standard BMCR definitions?

> +#define USXGMII_BMSR_LNKS(status)	(((status) & GENMASK(2, 2)) >> 2)
> +#define USXGMII_BMSR_AN_CMPL(status)	(((status) & GENMASK(5, 5)) >> 5)

Aren't these just redefinitions of the standard BMSR definitions just
differently?

Maybe convert the code to use the standard definitions found in
include/uapi/linux/mii.h and include/uapi/linux/mdio.h?

> +#define USXGMII_ADVERTISE_LNKS(x)	(((x) << 15) & BIT(15))
> +#define USXGMII_ADVERTISE_FDX		BIT(12)
> +#define USXGMII_ADVERTISE_SPEED(x)	(((x) << 9) & GENMASK(11, 9))
> +#define USXGMII_LPA_LNKS(lpa)		((lpa) >> 15)
> +#define USXGMII_LPA_DUPLEX(lpa)		(((lpa) & GENMASK(12, 12)) >> 12)
> +#define USXGMII_LPA_SPEED(lpa)		(((lpa) & GENMASK(11, 9)) >> 9)
> +
> +enum usxgmii_speed {
> +	USXGMII_SPEED_10	= 0,
> +	USXGMII_SPEED_100	= 1,
> +	USXGMII_SPEED_1000	= 2,
> +	USXGMII_SPEED_2500	= 4,
> +};
> +

I've asked in other patch sets for the USXGMII definitions to be moved
into some header that everyone can use - there is nothing enetc specific
about the USXGMII word definitions.  Please move them to a header file
so that everyone can use them.

Thanks.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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