diff options
Diffstat (limited to 'drivers/net/dsa/lan9303-core.c')
| -rw-r--r-- | drivers/net/dsa/lan9303-core.c | 169 |
1 files changed, 114 insertions, 55 deletions
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c index 2e270b479143..cbe831875347 100644 --- a/drivers/net/dsa/lan9303-core.c +++ b/drivers/net/dsa/lan9303-core.c @@ -15,6 +15,9 @@ #include "lan9303.h" +/* For the LAN9303 and LAN9354, only port 0 is an XMII port. */ +#define IS_PORT_XMII(port) ((port) == 0) + #define LAN9303_NUM_PORTS 3 /* 13.2 System Control and Status Registers @@ -50,6 +53,9 @@ #define LAN9303_MANUAL_FC_1 0x68 #define LAN9303_MANUAL_FC_2 0x69 #define LAN9303_MANUAL_FC_0 0x6a +# define LAN9303_BP_EN BIT(6) +# define LAN9303_RX_FC_EN BIT(2) +# define LAN9303_TX_FC_EN BIT(1) #define LAN9303_SWITCH_CSR_DATA 0x6b #define LAN9303_SWITCH_CSR_CMD 0x6c #define LAN9303_SWITCH_CSR_CMD_BUSY BIT(31) @@ -225,6 +231,13 @@ const struct regmap_access_table lan9303_register_set = { }; EXPORT_SYMBOL(lan9303_register_set); +/* Flow Control registers indexed by port number */ +static unsigned int flow_ctl_reg[] = { + LAN9303_MANUAL_FC_0, + LAN9303_MANUAL_FC_1, + LAN9303_MANUAL_FC_2 +}; + static int lan9303_read(struct regmap *regmap, unsigned int offset, u32 *reg) { int ret, i; @@ -902,6 +915,7 @@ static int lan9303_setup(struct dsa_switch *ds) { struct lan9303 *chip = ds->priv; int ret; + u32 reg; /* Make sure that port 0 is the cpu port */ if (!dsa_is_cpu_port(ds, 0)) { @@ -909,6 +923,17 @@ static int lan9303_setup(struct dsa_switch *ds) return -EINVAL; } + /* Virtual Phy: Remove Turbo 200Mbit mode */ + ret = lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, ®); + if (ret) + return (ret); + + /* Clear the TURBO Mode bit if it was set. */ + if (reg & LAN9303_VIRT_SPECIAL_TURBO) { + reg &= ~LAN9303_VIRT_SPECIAL_TURBO; + regmap_write(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, reg); + } + ret = lan9303_setup_tagging(chip); if (ret) dev_err(chip->dev, "failed to setup port tagging %d\n", ret); @@ -1049,42 +1074,6 @@ static int lan9303_phy_write(struct dsa_switch *ds, int phy, int regnum, return chip->ops->phy_write(chip, phy, regnum, val); } -static void lan9303_adjust_link(struct dsa_switch *ds, int port, - struct phy_device *phydev) -{ - struct lan9303 *chip = ds->priv; - int ctl; - - if (!phy_is_pseudo_fixed_link(phydev)) - return; - - ctl = lan9303_phy_read(ds, port, MII_BMCR); - - ctl &= ~BMCR_ANENABLE; - - if (phydev->speed == SPEED_100) - ctl |= BMCR_SPEED100; - else if (phydev->speed == SPEED_10) - ctl &= ~BMCR_SPEED100; - else - dev_err(ds->dev, "unsupported speed: %d\n", phydev->speed); - - if (phydev->duplex == DUPLEX_FULL) - ctl |= BMCR_FULLDPLX; - else - ctl &= ~BMCR_FULLDPLX; - - lan9303_phy_write(ds, port, MII_BMCR, ctl); - - if (port == chip->phy_addr_base) { - /* Virtual Phy: Remove Turbo 200Mbit mode */ - lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, &ctl); - - ctl &= ~LAN9303_VIRT_SPECIAL_TURBO; - regmap_write(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, ctl); - } -} - static int lan9303_port_enable(struct dsa_switch *ds, int port, struct phy_device *phy) { @@ -1281,26 +1270,96 @@ static int lan9303_port_mdb_del(struct dsa_switch *ds, int port, return 0; } +static void lan9303_phylink_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) +{ + struct lan9303 *chip = ds->priv; + + dev_dbg(chip->dev, "%s(%d) entered.", __func__, port); + + config->mac_capabilities = MAC_10 | MAC_100 | MAC_ASYM_PAUSE | + MAC_SYM_PAUSE; + + if (port == 0) { + __set_bit(PHY_INTERFACE_MODE_RMII, + config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_MII, + config->supported_interfaces); + } else { + __set_bit(PHY_INTERFACE_MODE_INTERNAL, + config->supported_interfaces); + /* Compatibility for phylib's default interface type when the + * phy-mode property is absent + */ + __set_bit(PHY_INTERFACE_MODE_GMII, + config->supported_interfaces); + } + + /* This driver does not make use of the speed, duplex, pause or the + * advertisement in its mac_config, so it is safe to mark this driver + * as non-legacy. + */ + config->legacy_pre_march2020 = false; +} + +static void lan9303_phylink_mac_link_up(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface, + struct phy_device *phydev, int speed, + int duplex, bool tx_pause, + bool rx_pause) +{ + struct lan9303 *chip = ds->priv; + u32 ctl; + u32 reg; + + /* On this device, we are only interested in doing something here if + * this is the xMII port. All other ports are 10/100 phys using MDIO + * to control there link settings. + */ + if (!IS_PORT_XMII(port)) + return; + + /* Disable auto-negotiation and force the speed/duplex settings. */ + ctl = lan9303_phy_read(ds, port, MII_BMCR); + ctl &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX); + if (speed == SPEED_100) + ctl |= BMCR_SPEED100; + if (duplex == DUPLEX_FULL) + ctl |= BMCR_FULLDPLX; + lan9303_phy_write(ds, port, MII_BMCR, ctl); + + /* Force the flow control settings. */ + lan9303_read(chip->regmap, flow_ctl_reg[port], ®); + reg &= ~(LAN9303_BP_EN | LAN9303_RX_FC_EN | LAN9303_TX_FC_EN); + if (rx_pause) + reg |= (LAN9303_RX_FC_EN | LAN9303_BP_EN); + if (tx_pause) + reg |= LAN9303_TX_FC_EN; + regmap_write(chip->regmap, flow_ctl_reg[port], reg); +} + static const struct dsa_switch_ops lan9303_switch_ops = { - .get_tag_protocol = lan9303_get_tag_protocol, - .setup = lan9303_setup, - .get_strings = lan9303_get_strings, - .phy_read = lan9303_phy_read, - .phy_write = lan9303_phy_write, - .adjust_link = lan9303_adjust_link, - .get_ethtool_stats = lan9303_get_ethtool_stats, - .get_sset_count = lan9303_get_sset_count, - .port_enable = lan9303_port_enable, - .port_disable = lan9303_port_disable, - .port_bridge_join = lan9303_port_bridge_join, - .port_bridge_leave = lan9303_port_bridge_leave, - .port_stp_state_set = lan9303_port_stp_state_set, - .port_fast_age = lan9303_port_fast_age, - .port_fdb_add = lan9303_port_fdb_add, - .port_fdb_del = lan9303_port_fdb_del, - .port_fdb_dump = lan9303_port_fdb_dump, - .port_mdb_add = lan9303_port_mdb_add, - .port_mdb_del = lan9303_port_mdb_del, + .get_tag_protocol = lan9303_get_tag_protocol, + .setup = lan9303_setup, + .get_strings = lan9303_get_strings, + .phy_read = lan9303_phy_read, + .phy_write = lan9303_phy_write, + .phylink_get_caps = lan9303_phylink_get_caps, + .phylink_mac_link_up = lan9303_phylink_mac_link_up, + .get_ethtool_stats = lan9303_get_ethtool_stats, + .get_sset_count = lan9303_get_sset_count, + .port_enable = lan9303_port_enable, + .port_disable = lan9303_port_disable, + .port_bridge_join = lan9303_port_bridge_join, + .port_bridge_leave = lan9303_port_bridge_leave, + .port_stp_state_set = lan9303_port_stp_state_set, + .port_fast_age = lan9303_port_fast_age, + .port_fdb_add = lan9303_port_fdb_add, + .port_fdb_del = lan9303_port_fdb_del, + .port_fdb_dump = lan9303_port_fdb_dump, + .port_mdb_add = lan9303_port_mdb_add, + .port_mdb_del = lan9303_port_mdb_del, }; static int lan9303_register_switch(struct lan9303 *chip) |