return 0;
}
+/* MDIO wrappers, we're using these to drive internal MDIO to get to serdes */
+static int enetc_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
+{
+ struct enetc_mdio_priv priv;
+
+ priv.regs_base = bus->priv;
+ return enetc_mdio_read_priv(&priv, addr, devad, reg);
+}
+
+static int enetc_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
+ u16 val)
+{
+ struct enetc_mdio_priv priv;
+
+ priv.regs_base = bus->priv;
+ return enetc_mdio_write_priv(&priv, addr, devad, reg, val);
+}
+
+/* only interfaces that can pin out through serdes have internal MDIO */
+static bool enetc_has_imdio(struct udevice *dev)
+{
+ struct enetc_priv *priv = dev_get_priv(dev);
+
+ return !!(priv->imdio.priv);
+}
+
+/* set up serdes for SGMII */
+static int enetc_init_sgmii(struct udevice *dev)
+{
+ struct enetc_priv *priv = dev_get_priv(dev);
+
+ if (!enetc_has_imdio(dev))
+ return 0;
+
+ /* Set to SGMII mode, use AN */
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, MDIO_DEVAD_NONE,
+ ENETC_PCS_IF_MODE, ENETC_PCS_IF_MODE_SGMII_AN);
+
+ /* Dev ability - SGMII */
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, MDIO_DEVAD_NONE,
+ ENETC_PCS_DEV_ABILITY, ENETC_PCS_DEV_ABILITY_SGMII);
+
+ /* Adjust link timer for SGMII */
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, MDIO_DEVAD_NONE,
+ ENETC_PCS_LINK_TIMER1, ENETC_PCS_LINK_TIMER1_VAL);
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, MDIO_DEVAD_NONE,
+ ENETC_PCS_LINK_TIMER2, ENETC_PCS_LINK_TIMER2_VAL);
+
+ /* restart PCS AN */
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, MDIO_DEVAD_NONE,
+ ENETC_PCS_CR,
+ ENETC_PCS_CR_RESET_AN | ENETC_PCS_CR_DEF_VAL);
+
+ return 0;
+}
+
+/* set up MAC for RGMII */
+static int enetc_init_rgmii(struct udevice *dev)
+{
+ struct enetc_priv *priv = dev_get_priv(dev);
+ u32 if_mode;
+
+ /* enable RGMII AN */
+ if_mode = enetc_read_port(priv, ENETC_PM_IF_MODE);
+ if_mode |= ENETC_PM_IF_MODE_AN_ENA;
+ enetc_write_port(priv, ENETC_PM_IF_MODE, if_mode);
+
+ return 0;
+}
+
+/* set up MAC and serdes for SXGMII */
+static int enetc_init_sxgmii(struct udevice *dev)
+{
+ struct enetc_priv *priv = dev_get_priv(dev);
+ u32 if_mode;
+
+ /* set ifmode to (US)XGMII */
+ if_mode = enetc_read_port(priv, ENETC_PM_IF_MODE);
+ if_mode &= ~ENETC_PM_IF_IFMODE_MASK;
+ enetc_write_port(priv, ENETC_PM_IF_MODE, if_mode);
+
+ if (!enetc_has_imdio(dev))
+ return 0;
+
+ /* Dev ability - SXGMII */
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, ENETC_PCS_DEVAD_REPL,
+ ENETC_PCS_DEV_ABILITY, ENETC_PCS_DEV_ABILITY_SXGMII);
+
+ /* Restart PCS AN */
+ enetc_mdio_write(&priv->imdio, ENETC_PCS_PHY_ADDR, ENETC_PCS_DEVAD_REPL,
+ ENETC_PCS_CR,
+ ENETC_PCS_CR_LANE_RESET | ENETC_PCS_CR_RESET_AN);
+
+ return 0;
+}
+
+/* Apply protocol specific configuration to MAC, serdes as needed */
+static void enetc_start_pcs(struct udevice *dev)
+{
+ struct enetc_priv *priv = dev_get_priv(dev);
+ const char *if_str;
+
+ priv->if_type = PHY_INTERFACE_MODE_NONE;
+
+ /* check internal mdio capability, not all ports need it */
+ if (enetc_read_port(priv, ENETC_PCAPR0) & ENETC_PCAPRO_MDIO) {
+ /*
+ * set up internal MDIO, this is part of ETH PCI function and is
+ * used to access serdes / internal SoC PHYs.
+ * We don't currently register it as a MDIO bus as it goes away
+ * when the interface is removed, so it can't practically be
+ * used in the console.
+ */
+ priv->imdio.read = enetc_mdio_read;
+ priv->imdio.write = enetc_mdio_write;
+ priv->imdio.priv = priv->port_regs + ENETC_PM_IMDIO_BASE;
+ strncpy(priv->imdio.name, dev->name, MDIO_NAME_LEN);
+ }
+
+ if (!ofnode_valid(dev->node)) {
+ enetc_dbg(dev, "no enetc ofnode found, skipping PCS set-up\n");
+ return;
+ }
+
+ if_str = ofnode_read_string(dev->node, "phy-mode");
+ if (if_str)
+ priv->if_type = phy_get_interface_by_name(if_str);
+ else
+ enetc_dbg(dev,
+ "phy-mode property not found, defaulting to SGMII\n");
+ if (priv->if_type < 0)
+ priv->if_type = PHY_INTERFACE_MODE_NONE;
+
+ switch (priv->if_type) {
+ case PHY_INTERFACE_MODE_SGMII:
+ enetc_init_sgmii(dev);
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ enetc_init_rgmii(dev);
+ break;
+ case PHY_INTERFACE_MODE_XGMII:
+ enetc_init_sxgmii(dev);
+ break;
+ };
+}
+
/* Configure the actual/external ethernet PHY, if one is found */
static void enetc_start_phy(struct udevice *dev)
{
enetc_setup_tx_bdr(dev);
enetc_setup_rx_bdr(dev);
- priv->if_type = PHY_INTERFACE_MODE_NONE;
+ enetc_start_pcs(dev);
enetc_start_phy(dev);
return 0;
#define ENETC_PSIPMMR 0x0018
#define ENETC_PSIPMAR0 0x0100
#define ENETC_PSIPMAR1 0x0104
+#define ENETC_PCAPR0 0x0900
+#define ENETC_PCAPRO_MDIO BIT(11)
#define ENETC_PSICFGR(n) (0x0940 + (n) * 0x10)
#define ENETC_PSICFGR_SET_TXBDR(val) ((val) & 0xff)
#define ENETC_PSICFGR_SET_RXBDR(val) (((val) & 0xff) << 16)
#define ENETC_PM_CC_RX_TX_EN 0x8813
#define ENETC_PM_MAXFRM 0x8014
#define ENETC_RX_MAXFRM_SIZE PKTSIZE_ALIGN
+#define ENETC_PM_IMDIO_BASE 0x8030
+#define ENETC_PM_IF_MODE 0x8300
+#define ENETC_PM_IF_MODE_RG BIT(2)
+#define ENETC_PM_IF_MODE_AN_ENA BIT(15)
+#define ENETC_PM_IF_IFMODE_MASK GENMASK(1, 0)
/* buffer descriptors count must be multiple of 8 and aligned to 128 bytes */
#define ENETC_BD_CNT CONFIG_SYS_RX_ETH_BUFFER
struct bd_ring rx_bdr;
int if_type;
+ struct mii_dev imdio;
};
/* register accessors */
#define enetc_bdr_write(priv, t, n, off, val) \
enetc_write(priv, ENETC_BDR(t, n, off), val)
+/* PCS / internal SoC PHY ID, it defaults to 0 on all interfaces */
+#define ENETC_PCS_PHY_ADDR 0
+
+/* PCS registers */
+#define ENETC_PCS_CR 0x00
+#define ENETC_PCS_CR_RESET_AN 0x1200
+#define ENETC_PCS_CR_DEF_VAL 0x0140
+#define ENETC_PCS_CR_LANE_RESET 0x8000
+#define ENETC_PCS_DEV_ABILITY 0x04
+#define ENETC_PCS_DEV_ABILITY_SGMII 0x4001
+#define ENETC_PCS_DEV_ABILITY_SXGMII 0x5001
+#define ENETC_PCS_LINK_TIMER1 0x12
+#define ENETC_PCS_LINK_TIMER1_VAL 0x06a0
+#define ENETC_PCS_LINK_TIMER2 0x13
+#define ENETC_PCS_LINK_TIMER2_VAL 0x0003
+#define ENETC_PCS_IF_MODE 0x14
+#define ENETC_PCS_IF_MODE_SGMII_AN 0x0003
+
+/* PCS replicator block for USXGMII */
+#define ENETC_PCS_DEVAD_REPL 0x1f
+
/* ENETC external MDIO registers */
#define ENETC_MDIO_BASE 0x1c00
#define ENETC_MDIO_CFG 0x00
void *regs_base;
};
+/*
+ * these functions are implemented by ENETC_MDIO and are re-used by ENETC driver
+ * to drive serdes / internal SoC PHYs
+ */
+int enetc_mdio_read_priv(struct enetc_mdio_priv *priv, int addr, int devad,
+ int reg);
+int enetc_mdio_write_priv(struct enetc_mdio_priv *priv, int addr, int devad,
+ int reg, u16 val);
+
#endif /* _ENETC_H */
projects / oweals / u-boot.git / commitdiff