From 6335e9f2446b44139ac0722a81759a2b2f90bb4c Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Fri, 26 May 2017 01:03:23 +0200 Subject: [PATCH] net: dsa: mv88e6xxx: mv88e6390X SERDES support The mv88e6390X family has 8 SERDES lanes. These can be used for 2 10Gbps ports, ports 9 or 10. If these ports are used at slower speeds, the SERDES lanes become available for other ports for 1000Base-X. Signed-off-by: Andrew Lunn Reviewed-by: Vivien Didelot Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx/chip.c | 6 ++ drivers/net/dsa/mv88e6xxx/serdes.c | 154 +++++++++++++++++++++++++++++ drivers/net/dsa/mv88e6xxx/serdes.h | 24 +++++ 3 files changed, 184 insertions(+) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index bc7b345d91d3..4e58d9a82d9e 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -2757,6 +2757,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6390_g1_vtu_getnext, .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge, + .serdes_power = mv88e6390_serdes_power, }; static const struct mv88e6xxx_ops mv88e6190x_ops = { @@ -2789,6 +2790,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6390_g1_vtu_getnext, .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge, + .serdes_power = mv88e6390_serdes_power, }; static const struct mv88e6xxx_ops mv88e6191_ops = { @@ -2821,6 +2823,7 @@ static const struct mv88e6xxx_ops mv88e6191_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6390_g1_vtu_getnext, .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge, + .serdes_power = mv88e6390_serdes_power, }; static const struct mv88e6xxx_ops mv88e6240_ops = { @@ -2888,6 +2891,7 @@ static const struct mv88e6xxx_ops mv88e6290_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6390_g1_vtu_getnext, .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge, + .serdes_power = mv88e6390_serdes_power, }; static const struct mv88e6xxx_ops mv88e6320_ops = { @@ -3113,6 +3117,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6390_g1_vtu_getnext, .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge, + .serdes_power = mv88e6390_serdes_power, }; static const struct mv88e6xxx_ops mv88e6390x_ops = { @@ -3147,6 +3152,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6390_g1_vtu_getnext, .vtu_loadpurge = mv88e6390_g1_vtu_loadpurge, + .serdes_power = mv88e6390_serdes_power, }; static const struct mv88e6xxx_info mv88e6xxx_table[] = { diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c index 235f5f0c30ae..53795676bd70 100644 --- a/drivers/net/dsa/mv88e6xxx/serdes.c +++ b/drivers/net/dsa/mv88e6xxx/serdes.c @@ -13,6 +13,7 @@ #include +#include "global2.h" #include "mv88e6xxx.h" #include "phy.h" #include "port.h" @@ -73,3 +74,156 @@ int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on) return 0; } + +/* Set the power on/off for 10GBASE-R and 10GBASE-X4/X2 */ +static int mv88e6390_serdes_10g(struct mv88e6xxx_chip *chip, int addr, bool on) +{ + u16 val, new_val; + int reg_c45; + int err; + + reg_c45 = MII_ADDR_C45 | MV88E6390_SERDES_DEVICE | + MV88E6390_PCS_CONTROL_1; + err = mv88e6xxx_phy_read(chip, addr, reg_c45, &val); + if (err) + return err; + + if (on) + new_val = val & ~(MV88E6390_PCS_CONTROL_1_RESET | + MV88E6390_PCS_CONTROL_1_LOOPBACK | + MV88E6390_PCS_CONTROL_1_PDOWN); + else + new_val = val | MV88E6390_PCS_CONTROL_1_PDOWN; + + if (val != new_val) + err = mv88e6xxx_phy_write(chip, addr, reg_c45, new_val); + + return err; +} + +/* Set the power on/off for 10GBASE-R and 10GBASE-X4/X2 */ +static int mv88e6390_serdes_sgmii(struct mv88e6xxx_chip *chip, int addr, + bool on) +{ + u16 val, new_val; + int reg_c45; + int err; + + reg_c45 = MII_ADDR_C45 | MV88E6390_SERDES_DEVICE | + MV88E6390_SGMII_CONTROL; + err = mv88e6xxx_phy_read(chip, addr, reg_c45, &val); + if (err) + return err; + + if (on) + new_val = val & ~(MV88E6390_SGMII_CONTROL_RESET | + MV88E6390_SGMII_CONTROL_LOOPBACK | + MV88E6390_SGMII_CONTROL_PDOWN); + else + new_val = val | MV88E6390_SGMII_CONTROL_PDOWN; + + if (val != new_val) + err = mv88e6xxx_phy_write(chip, addr, reg_c45, new_val); + + return err; +} + +static int mv88e6390_serdes_lower(struct mv88e6xxx_chip *chip, u8 cmode, + int port_donor, int lane, bool rxaui, bool on) +{ + int err; + u8 cmode_donor; + + err = mv88e6xxx_port_get_cmode(chip, port_donor, &cmode_donor); + if (err) + return err; + + switch (cmode_donor) { + case PORT_STATUS_CMODE_RXAUI: + if (!rxaui) + break; + /* Fall through */ + case PORT_STATUS_CMODE_1000BASE_X: + case PORT_STATUS_CMODE_SGMII: + case PORT_STATUS_CMODE_2500BASEX: + if (cmode == PORT_STATUS_CMODE_1000BASE_X || + cmode == PORT_STATUS_CMODE_SGMII) + return mv88e6390_serdes_sgmii(chip, lane, on); + } + return 0; +} + +static int mv88e6390_serdes_port9(struct mv88e6xxx_chip *chip, u8 cmode, + bool on) +{ + switch (cmode) { + case PORT_STATUS_CMODE_1000BASE_X: + case PORT_STATUS_CMODE_SGMII: + return mv88e6390_serdes_sgmii(chip, MV88E6390_PORT9_LANE0, on); + case PORT_STATUS_CMODE_XAUI: + case PORT_STATUS_CMODE_RXAUI: + case PORT_STATUS_CMODE_2500BASEX: + return mv88e6390_serdes_10g(chip, MV88E6390_PORT9_LANE0, on); + } + + return 0; +} + +static int mv88e6390_serdes_port10(struct mv88e6xxx_chip *chip, u8 cmode, + bool on) +{ + switch (cmode) { + case PORT_STATUS_CMODE_SGMII: + return mv88e6390_serdes_sgmii(chip, MV88E6390_PORT10_LANE0, on); + case PORT_STATUS_CMODE_XAUI: + case PORT_STATUS_CMODE_RXAUI: + case PORT_STATUS_CMODE_1000BASE_X: + case PORT_STATUS_CMODE_2500BASEX: + return mv88e6390_serdes_10g(chip, MV88E6390_PORT10_LANE0, on); + } + + return 0; +} + +int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on) +{ + u8 cmode; + int err; + + err = mv88e6xxx_port_get_cmode(chip, port, &cmode); + if (err) + return cmode; + + switch (port) { + case 2: + return mv88e6390_serdes_lower(chip, cmode, 9, + MV88E6390_PORT9_LANE1, + false, on); + case 3: + return mv88e6390_serdes_lower(chip, cmode, 9, + MV88E6390_PORT9_LANE2, + true, on); + case 4: + return mv88e6390_serdes_lower(chip, cmode, 9, + MV88E6390_PORT9_LANE3, + true, on); + case 5: + return mv88e6390_serdes_lower(chip, cmode, 10, + MV88E6390_PORT10_LANE1, + false, on); + case 6: + return mv88e6390_serdes_lower(chip, cmode, 10, + MV88E6390_PORT10_LANE2, + true, on); + case 7: + return mv88e6390_serdes_lower(chip, cmode, 10, + MV88E6390_PORT10_LANE3, + true, on); + case 9: + return mv88e6390_serdes_port9(chip, cmode, on); + case 10: + return mv88e6390_serdes_port10(chip, cmode, on); + } + + return 0; +} diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h index a690be09ac52..eb3ceaef790f 100644 --- a/drivers/net/dsa/mv88e6xxx/serdes.h +++ b/drivers/net/dsa/mv88e6xxx/serdes.h @@ -19,6 +19,30 @@ #define MV88E6352_ADDR_SERDES 0x0f #define MV88E6352_SERDES_PAGE_FIBER 0x01 +#define MV88E6390_PORT9_LANE0 0x09 +#define MV88E6390_PORT9_LANE1 0x12 +#define MV88E6390_PORT9_LANE2 0x13 +#define MV88E6390_PORT9_LANE3 0x14 +#define MV88E6390_PORT10_LANE0 0x0a +#define MV88E6390_PORT10_LANE1 0x15 +#define MV88E6390_PORT10_LANE2 0x16 +#define MV88E6390_PORT10_LANE3 0x17 +#define MV88E6390_SERDES_DEVICE (4 << 16) + +/* 10GBASE-R and 10GBASE-X4/X2 */ +#define MV88E6390_PCS_CONTROL_1 0x1000 +#define MV88E6390_PCS_CONTROL_1_RESET BIT(15) +#define MV88E6390_PCS_CONTROL_1_LOOPBACK BIT(14) +#define MV88E6390_PCS_CONTROL_1_SPEED BIT(13) +#define MV88E6390_PCS_CONTROL_1_PDOWN BIT(11) + +/* 1000BASE-X and SGMII */ +#define MV88E6390_SGMII_CONTROL 0x2000 +#define MV88E6390_SGMII_CONTROL_RESET BIT(15) +#define MV88E6390_SGMII_CONTROL_LOOPBACK BIT(14) +#define MV88E6390_SGMII_CONTROL_PDOWN BIT(11) + int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on); +int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on); #endif -- 2.20.1