diff options
Diffstat (limited to 'drivers/net/phy/mv88e61xx.c')
| -rw-r--r-- | drivers/net/phy/mv88e61xx.c | 150 |
1 files changed, 125 insertions, 25 deletions
diff --git a/drivers/net/phy/mv88e61xx.c b/drivers/net/phy/mv88e61xx.c index c1e2860329..9aba04253c 100644 --- a/drivers/net/phy/mv88e61xx.c +++ b/drivers/net/phy/mv88e61xx.c @@ -39,15 +39,11 @@ #define PHY_AUTONEGOTIATE_TIMEOUT 5000 -#define PORT_COUNT 11 -#define PORT_MASK ((1 << PORT_COUNT) - 1) +#define PORT_MASK(port_count) ((1 << (port_count)) - 1) /* Device addresses */ #define DEVADDR_PHY(p) (p) -#define DEVADDR_PORT(p) (0x10 + (p)) #define DEVADDR_SERDES 0x0F -#define DEVADDR_GLOBAL_1 0x1B -#define DEVADDR_GLOBAL_2 0x1C /* SMI indirection registers for multichip addressing mode */ #define SMI_CMD_REG 0x00 @@ -182,17 +178,26 @@ #endif /* ID register values for different switch models */ +#define PORT_SWITCH_ID_6020 0x0200 +#define PORT_SWITCH_ID_6070 0x0700 +#define PORT_SWITCH_ID_6071 0x0710 #define PORT_SWITCH_ID_6096 0x0980 #define PORT_SWITCH_ID_6097 0x0990 #define PORT_SWITCH_ID_6172 0x1720 #define PORT_SWITCH_ID_6176 0x1760 +#define PORT_SWITCH_ID_6220 0x2200 #define PORT_SWITCH_ID_6240 0x2400 +#define PORT_SWITCH_ID_6250 0x2500 #define PORT_SWITCH_ID_6352 0x3520 struct mv88e61xx_phy_priv { struct mii_dev *mdio_bus; int smi_addr; int id; + int port_count; /* Number of switch ports */ + int port_reg_base; /* Base of the switch port registers */ + u8 global1; /* Offset of Switch Global 1 registers */ + u8 global2; /* Offset of Switch Global 2 registers */ }; static inline int smi_cmd(int cmd, int addr, int reg) @@ -329,11 +334,12 @@ static int mv88e61xx_reg_write(struct phy_device *phydev, int dev, int reg, static int mv88e61xx_phy_wait(struct phy_device *phydev) { + struct mv88e61xx_phy_priv *priv = phydev->priv; int val; u32 timeout = 100; do { - val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_2, + val = mv88e61xx_reg_read(phydev, priv->global2, GLOBAL2_REG_PHY_CMD); if (val >= 0 && (val & SMI_BUSY) == 0) return 0; @@ -347,13 +353,15 @@ static int mv88e61xx_phy_wait(struct phy_device *phydev) static int mv88e61xx_phy_read_indirect(struct mii_dev *smi_wrapper, int dev, int devad, int reg) { + struct mv88e61xx_phy_priv *priv; struct phy_device *phydev; int res; phydev = (struct phy_device *)smi_wrapper->priv; + priv = phydev->priv; /* Issue command to read */ - res = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_2, + res = mv88e61xx_reg_write(phydev, priv->global2, GLOBAL2_REG_PHY_CMD, smi_cmd_read(dev, reg)); @@ -363,25 +371,27 @@ static int mv88e61xx_phy_read_indirect(struct mii_dev *smi_wrapper, int dev, return res; /* Read retrieved data */ - return mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_2, + return mv88e61xx_reg_read(phydev, priv->global2, GLOBAL2_REG_PHY_DATA); } static int mv88e61xx_phy_write_indirect(struct mii_dev *smi_wrapper, int dev, int devad, int reg, u16 data) { + struct mv88e61xx_phy_priv *priv; struct phy_device *phydev; int res; phydev = (struct phy_device *)smi_wrapper->priv; + priv = phydev->priv; /* Set the data to write */ - res = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_2, + res = mv88e61xx_reg_write(phydev, priv->global2, GLOBAL2_REG_PHY_DATA, data); if (res < 0) return res; /* Issue the write command */ - res = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_2, + res = mv88e61xx_reg_write(phydev, priv->global2, GLOBAL2_REG_PHY_CMD, smi_cmd_write(dev, reg)); if (res < 0) @@ -408,13 +418,18 @@ static int mv88e61xx_phy_write(struct phy_device *phydev, int phy, static int mv88e61xx_port_read(struct phy_device *phydev, u8 port, u8 reg) { - return mv88e61xx_reg_read(phydev, DEVADDR_PORT(port), reg); + struct mv88e61xx_phy_priv *priv = phydev->priv; + + return mv88e61xx_reg_read(phydev, priv->port_reg_base + port, reg); } static int mv88e61xx_port_write(struct phy_device *phydev, u8 port, u8 reg, u16 val) { - return mv88e61xx_reg_write(phydev, DEVADDR_PORT(port), reg, val); + struct mv88e61xx_phy_priv *priv = phydev->priv; + + return mv88e61xx_reg_write(phydev, priv->port_reg_base + port, + reg, val); } static int mv88e61xx_set_page(struct phy_device *phydev, u8 phy, u8 page) @@ -515,12 +530,13 @@ static int mv88e61xx_parse_status(struct phy_device *phydev) static int mv88e61xx_switch_reset(struct phy_device *phydev) { + struct mv88e61xx_phy_priv *priv = phydev->priv; int time; int val; u8 port; /* Disable all ports */ - for (port = 0; port < PORT_COUNT; port++) { + for (port = 0; port < priv->port_count; port++) { val = mv88e61xx_port_read(phydev, port, PORT_REG_CTRL); if (val < 0) return val; @@ -536,19 +552,19 @@ static int mv88e61xx_switch_reset(struct phy_device *phydev) udelay(2000); /* Reset switch */ - val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_1, GLOBAL1_CTRL); + val = mv88e61xx_reg_read(phydev, priv->global1, GLOBAL1_CTRL); if (val < 0) return val; val |= GLOBAL1_CTRL_SWRESET; - val = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_1, - GLOBAL1_CTRL, val); + val = mv88e61xx_reg_write(phydev, priv->global1, + GLOBAL1_CTRL, val); if (val < 0) return val; /* Wait up to 1 second for switch reset complete */ for (time = 1000; time; time--) { - val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_1, - GLOBAL1_CTRL); + val = mv88e61xx_reg_read(phydev, priv->global1, + GLOBAL1_CTRL); if (val >= 0 && ((val & GLOBAL1_CTRL_SWRESET) == 0)) break; udelay(1000); @@ -732,22 +748,23 @@ static int mv88e61xx_fixed_port_setup(struct phy_device *phydev, u8 port) static int mv88e61xx_set_cpu_port(struct phy_device *phydev) { + struct mv88e61xx_phy_priv *priv = phydev->priv; int val; /* Set CPUDest */ - val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_1, GLOBAL1_MON_CTRL); + val = mv88e61xx_reg_read(phydev, priv->global1, GLOBAL1_MON_CTRL); if (val < 0) return val; val = bitfield_replace(val, GLOBAL1_MON_CTRL_CPUDEST_SHIFT, GLOBAL1_MON_CTRL_CPUDEST_WIDTH, CONFIG_MV88E61XX_CPU_PORT); - val = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_1, - GLOBAL1_MON_CTRL, val); + val = mv88e61xx_reg_write(phydev, priv->global1, + GLOBAL1_MON_CTRL, val); if (val < 0) return val; /* Allow CPU to route to any port */ - val = PORT_MASK & ~(1 << CONFIG_MV88E61XX_CPU_PORT); + val = PORT_MASK(priv->port_count) & ~(1 << CONFIG_MV88E61XX_CPU_PORT); val = mv88e61xx_port_set_vlan(phydev, CONFIG_MV88E61XX_CPU_PORT, val); if (val < 0) return val; @@ -856,6 +873,48 @@ static int mv88e61xx_phy_config_port(struct phy_device *phydev, u8 phy) return 0; } +/* + * This function is used to pre-configure the required register + * offsets, so that the indirect register access to the PHY registers + * is possible. This is necessary to be able to read the PHY ID + * while driver probing or in get_phy_id(). The globalN register + * offsets must be initialized correctly for a detected switch, + * otherwise detection of the PHY ID won't work! + */ +static int mv88e61xx_priv_reg_offs_pre_init(struct phy_device *phydev) +{ + struct mv88e61xx_phy_priv *priv = phydev->priv; + + /* + * Initial 'port_reg_base' value must be an offset of existing + * port register, then reading the ID should succeed. First, try + * to read via port registers with device address 0x10 (88E6096 + * and compatible switches). + */ + priv->port_reg_base = 0x10; + priv->id = mv88e61xx_get_switch_id(phydev); + if (priv->id != 0xfff0) { + priv->global1 = 0x1B; + priv->global2 = 0x1C; + return 0; + } + + /* + * Now try via port registers with device address 0x08 + * (88E6020 and compatible switches). + */ + priv->port_reg_base = 0x08; + priv->id = mv88e61xx_get_switch_id(phydev); + if (priv->id != 0xfff0) { + priv->global1 = 0x0F; + priv->global2 = 0x07; + return 0; + } + + debug("%s Unknown ID 0x%x\n", __func__, priv->id); + return -ENODEV; +} + static int mv88e61xx_probe(struct phy_device *phydev) { struct mii_dev *smi_wrapper; @@ -910,13 +969,43 @@ static int mv88e61xx_probe(struct phy_device *phydev) phydev->priv = priv; - priv->id = mv88e61xx_get_switch_id(phydev); + res = mv88e61xx_priv_reg_offs_pre_init(phydev); + if (res < 0) + return res; + + debug("%s ID 0x%x\n", __func__, priv->id); + + switch (priv->id) { + case PORT_SWITCH_ID_6096: + case PORT_SWITCH_ID_6097: + case PORT_SWITCH_ID_6172: + case PORT_SWITCH_ID_6176: + case PORT_SWITCH_ID_6240: + case PORT_SWITCH_ID_6352: + priv->port_count = 11; + break; + case PORT_SWITCH_ID_6020: + case PORT_SWITCH_ID_6070: + case PORT_SWITCH_ID_6071: + case PORT_SWITCH_ID_6220: + case PORT_SWITCH_ID_6250: + priv->port_count = 7; + break; + default: + free(priv); + return -ENODEV; + } + + res = mdio_register(smi_wrapper); + if (res) + printf("Failed to register SMI bus\n"); return 0; } static int mv88e61xx_phy_config(struct phy_device *phydev) { + struct mv88e61xx_phy_priv *priv = phydev->priv; int res; int i; int ret = -1; @@ -925,7 +1014,7 @@ static int mv88e61xx_phy_config(struct phy_device *phydev) if (res < 0) return res; - for (i = 0; i < PORT_COUNT; i++) { + for (i = 0; i < priv->port_count; i++) { if ((1 << i) & CONFIG_MV88E61XX_PHY_PORTS) { phydev->addr = i; @@ -988,13 +1077,14 @@ static int mv88e61xx_phy_is_connected(struct phy_device *phydev) static int mv88e61xx_phy_startup(struct phy_device *phydev) { + struct mv88e61xx_phy_priv *priv = phydev->priv; int i; int link = 0; int res; int speed = phydev->speed; int duplex = phydev->duplex; - for (i = 0; i < PORT_COUNT; i++) { + for (i = 0; i < priv->port_count; i++) { if ((1 << i) & CONFIG_MV88E61XX_PHY_PORTS) { phydev->addr = i; if (!mv88e61xx_phy_is_connected(phydev)) @@ -1068,6 +1158,16 @@ int get_phy_id(struct mii_dev *bus, int smi_addr, int devad, u32 *phy_id) temp_phy.priv = &temp_priv; temp_mii.priv = &temp_phy; + /* + * get_phy_id() can be called by framework before mv88e61xx driver + * probing, in this case the global register offsets are not + * initialized yet. Do this initialization here before indirect + * PHY register access. + */ + val = mv88e61xx_priv_reg_offs_pre_init(&temp_phy); + if (val < 0) + return val; + val = mv88e61xx_phy_read_indirect(&temp_mii, 0, devad, MII_PHYSID1); if (val < 0) return -EIO; |