X-Git-Url: https://git.librecmc.org/?p=oweals%2Fu-boot.git;a=blobdiff_plain;f=include%2Fphy.h;h=b5de14cbfc293d7b5fb1b67ff2cbf22e2ba91bef;hp=b86fdfb2ce341676d48109a7aebf9affbfc246aa;hb=1099b2abef35c3c887f6afac1a8ef18c7924d5d2;hpb=f749b61821409772904b8fe7ab62909db82a7c83 diff --git a/include/phy.h b/include/phy.h index b86fdfb2ce..b5de14cbfc 100644 --- a/include/phy.h +++ b/include/phy.h @@ -10,13 +10,22 @@ #define _PHY_H #include +#include #include #include #include #include +#include #include #define PHY_FIXED_ID 0xa5a55a5a +#define PHY_NCSI_ID 0xbeefcafe + +/* + * There is no actual id for this. + * This is just a dummy id for gmii2rgmmi converter. + */ +#define PHY_GMII2RGMII_ID 0x5a5a5a5a #define PHY_MAX_ADDR 32 @@ -101,7 +110,18 @@ struct phy_driver { int (*readext)(struct phy_device *phydev, int addr, int devad, int reg); int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg, u16 val); + + /* Phy specific driver override for reading a MMD register */ + int (*read_mmd)(struct phy_device *phydev, int devad, int reg); + + /* Phy specific driver override for writing a MMD register */ + int (*write_mmd)(struct phy_device *phydev, int devad, int reg, + u16 val); + struct list_head list; + + /* driver private data */ + ulong data; }; struct phy_device { @@ -138,6 +158,7 @@ struct phy_device { int pause; int asym_pause; u32 phy_id; + bool is_c45; u32 flags; }; @@ -153,6 +174,11 @@ static inline int phy_read(struct phy_device *phydev, int devad, int regnum) { struct mii_dev *bus = phydev->bus; + if (!bus || !bus->read) { + debug("%s: No bus configured\n", __func__); + return -1; + } + return bus->read(bus, phydev->addr, devad, regnum); } @@ -161,29 +187,157 @@ static inline int phy_write(struct phy_device *phydev, int devad, int regnum, { struct mii_dev *bus = phydev->bus; + if (!bus || !bus->read) { + debug("%s: No bus configured\n", __func__); + return -1; + } + return bus->write(bus, phydev->addr, devad, regnum, val); } +static inline void phy_mmd_start_indirect(struct phy_device *phydev, int devad, + int regnum) +{ + /* Write the desired MMD Devad */ + phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL, devad); + + /* Write the desired MMD register address */ + phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, regnum); + + /* Select the Function : DATA with no post increment */ + phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL, + (devad | MII_MMD_CTRL_NOINCR)); +} + +static inline int phy_read_mmd(struct phy_device *phydev, int devad, + int regnum) +{ + struct phy_driver *drv = phydev->drv; + + if (regnum > (u16)~0 || devad > 32) + return -EINVAL; + + /* driver-specific access */ + if (drv->read_mmd) + return drv->read_mmd(phydev, devad, regnum); + + /* direct C45 / C22 access */ + if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES || + devad == MDIO_DEVAD_NONE || !devad) + return phy_read(phydev, devad, regnum); + + /* indirect C22 access */ + phy_mmd_start_indirect(phydev, devad, regnum); + + /* Read the content of the MMD's selected register */ + return phy_read(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA); +} + +static inline int phy_write_mmd(struct phy_device *phydev, int devad, + int regnum, u16 val) +{ + struct phy_driver *drv = phydev->drv; + + if (regnum > (u16)~0 || devad > 32) + return -EINVAL; + + /* driver-specific access */ + if (drv->write_mmd) + return drv->write_mmd(phydev, devad, regnum, val); + + /* direct C45 / C22 access */ + if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES || + devad == MDIO_DEVAD_NONE || !devad) + return phy_write(phydev, devad, regnum, val); + + /* indirect C22 access */ + phy_mmd_start_indirect(phydev, devad, regnum); + + /* Write the data into MMD's selected register */ + return phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, val); +} + #ifdef CONFIG_PHYLIB_10G extern struct phy_driver gen10g_driver; -/* For now, XGMII is the only 10G interface */ +/* + * List all 10G interfaces here, the assumption being that PHYs on these + * interfaces are C45 + */ static inline int is_10g_interface(phy_interface_t interface) { - return interface == PHY_INTERFACE_MODE_XGMII; + return interface == PHY_INTERFACE_MODE_XGMII || + interface == PHY_INTERFACE_MODE_USXGMII || + interface == PHY_INTERFACE_MODE_XFI; } #endif +/** + * phy_init() - Initializes the PHY drivers + * + * This function registers all available PHY drivers + * + * @return 0 if OK, -ve on error + */ int phy_init(void); + +/** + * phy_reset() - Resets the specified PHY + * + * Issues a reset of the PHY and waits for it to complete + * + * @phydev: PHY to reset + * @return 0 if OK, -ve on error + */ int phy_reset(struct phy_device *phydev); + +/** + * phy_find_by_mask() - Searches for a PHY on the specified MDIO bus + * + * The function checks the PHY addresses flagged in phy_mask and returns a + * phy_device pointer if it detects a PHY. + * This function should only be called if just one PHY is expected to be present + * in the set of addresses flagged in phy_mask. If multiple PHYs are present, + * it is undefined which of these PHYs is returned. + * + * @bus: MII/MDIO bus to scan + * @phy_mask: bitmap of PYH addresses to scan + * @interface: type of MAC-PHY interface + * @return pointer to phy_device if a PHY is found, or NULL otherwise + */ struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask, phy_interface_t interface); + #ifdef CONFIG_DM_ETH + +/** + * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices + * @phydev: PHY device + * @dev: Ethernet device + */ void phy_connect_dev(struct phy_device *phydev, struct udevice *dev); + +/** + * phy_connect() - Creates a PHY device for the Ethernet interface + * + * Creates a PHY device for the PHY at the given address, if one doesn't exist + * already, and associates it with the Ethernet device. + * The function may be called with addr <= 0, in this case addr value is ignored + * and the bus is scanned to detect a PHY. Scanning should only be used if only + * one PHY is expected to be present on the MDIO bus, otherwise it is undefined + * which PHY is returned. + * + * @bus: MII/MDIO bus that hosts the PHY + * @addr: PHY address on MDIO bus + * @dev: Ethernet device to associate to the PHY + * @interface: type of MAC-PHY interface + * @return pointer to phy_device if a PHY is found, or NULL otherwise + */ struct phy_device *phy_connect(struct mii_dev *bus, int addr, struct udevice *dev, phy_interface_t interface); + static inline ofnode phy_get_ofnode(struct phy_device *phydev) { if (ofnode_valid(phydev->node)) @@ -192,10 +346,34 @@ static inline ofnode phy_get_ofnode(struct phy_device *phydev) return dev_ofnode(phydev->dev); } #else + +/** + * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices + * @phydev: PHY device + * @dev: Ethernet device + */ void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev); + +/** + * phy_connect() - Creates a PHY device for the Ethernet interface + * + * Creates a PHY device for the PHY at the given address, if one doesn't exist + * already, and associates it with the Ethernet device. + * The function may be called with addr <= 0, in this case addr value is ignored + * and the bus is scanned to detect a PHY. Scanning should only be used if only + * one PHY is expected to be present on the MDIO bus, otherwise it is undefined + * which PHY is returned. + * + * @bus: MII/MDIO bus that hosts the PHY + * @addr: PHY address on MDIO bus + * @dev: Ethernet device to associate to the PHY + * @interface: type of MAC-PHY interface + * @return pointer to phy_device if a PHY is found, or NULL otherwise + */ struct phy_device *phy_connect(struct mii_dev *bus, int addr, struct eth_device *dev, phy_interface_t interface); + static inline ofnode phy_get_ofnode(struct phy_device *phydev) { return ofnode_null(); @@ -240,6 +418,8 @@ int phy_vitesse_init(void); int phy_xilinx_init(void); int phy_mscc_init(void); int phy_fixed_init(void); +int phy_ncsi_init(void); +int phy_xilinx_gmii2rgmii_init(void); int board_phy_config(struct phy_device *phydev); int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);