diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/chip.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/chip.c | 340 |
1 files changed, 61 insertions, 279 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 19581d783d8e..742c0eae7fa3 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -32,12 +32,13 @@ #include <linux/gpio/consumer.h> #include <linux/phy.h> #include <net/dsa.h> -#include <net/switchdev.h> #include "mv88e6xxx.h" #include "global1.h" #include "global2.h" +#include "phy.h" #include "port.h" +#include "serdes.h" static void assert_reg_lock(struct mv88e6xxx_chip *chip) { @@ -222,21 +223,7 @@ int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val) return 0; } -static int mv88e6165_phy_read(struct mv88e6xxx_chip *chip, - struct mii_bus *bus, - int addr, int reg, u16 *val) -{ - return mv88e6xxx_read(chip, addr, reg, val); -} - -static int mv88e6165_phy_write(struct mv88e6xxx_chip *chip, - struct mii_bus *bus, - int addr, int reg, u16 val) -{ - return mv88e6xxx_write(chip, addr, reg, val); -} - -static struct mii_bus *mv88e6xxx_default_mdio_bus(struct mv88e6xxx_chip *chip) +struct mii_bus *mv88e6xxx_default_mdio_bus(struct mv88e6xxx_chip *chip) { struct mv88e6xxx_mdio_bus *mdio_bus; @@ -248,106 +235,6 @@ static struct mii_bus *mv88e6xxx_default_mdio_bus(struct mv88e6xxx_chip *chip) return mdio_bus->bus; } -static int mv88e6xxx_phy_read(struct mv88e6xxx_chip *chip, int phy, - int reg, u16 *val) -{ - int addr = phy; /* PHY devices addresses start at 0x0 */ - struct mii_bus *bus; - - bus = mv88e6xxx_default_mdio_bus(chip); - if (!bus) - return -EOPNOTSUPP; - - if (!chip->info->ops->phy_read) - return -EOPNOTSUPP; - - return chip->info->ops->phy_read(chip, bus, addr, reg, val); -} - -static int mv88e6xxx_phy_write(struct mv88e6xxx_chip *chip, int phy, - int reg, u16 val) -{ - int addr = phy; /* PHY devices addresses start at 0x0 */ - struct mii_bus *bus; - - bus = mv88e6xxx_default_mdio_bus(chip); - if (!bus) - return -EOPNOTSUPP; - - if (!chip->info->ops->phy_write) - return -EOPNOTSUPP; - - return chip->info->ops->phy_write(chip, bus, addr, reg, val); -} - -static int mv88e6xxx_phy_page_get(struct mv88e6xxx_chip *chip, int phy, u8 page) -{ - if (!mv88e6xxx_has(chip, MV88E6XXX_FLAG_PHY_PAGE)) - return -EOPNOTSUPP; - - return mv88e6xxx_phy_write(chip, phy, PHY_PAGE, page); -} - -static void mv88e6xxx_phy_page_put(struct mv88e6xxx_chip *chip, int phy) -{ - int err; - - /* Restore PHY page Copper 0x0 for access via the registered MDIO bus */ - err = mv88e6xxx_phy_write(chip, phy, PHY_PAGE, PHY_PAGE_COPPER); - if (unlikely(err)) { - dev_err(chip->dev, "failed to restore PHY %d page Copper (%d)\n", - phy, err); - } -} - -static int mv88e6xxx_phy_page_read(struct mv88e6xxx_chip *chip, int phy, - u8 page, int reg, u16 *val) -{ - int err; - - /* There is no paging for registers 22 */ - if (reg == PHY_PAGE) - return -EINVAL; - - err = mv88e6xxx_phy_page_get(chip, phy, page); - if (!err) { - err = mv88e6xxx_phy_read(chip, phy, reg, val); - mv88e6xxx_phy_page_put(chip, phy); - } - - return err; -} - -static int mv88e6xxx_phy_page_write(struct mv88e6xxx_chip *chip, int phy, - u8 page, int reg, u16 val) -{ - int err; - - /* There is no paging for registers 22 */ - if (reg == PHY_PAGE) - return -EINVAL; - - err = mv88e6xxx_phy_page_get(chip, phy, page); - if (!err) { - err = mv88e6xxx_phy_write(chip, phy, PHY_PAGE, page); - mv88e6xxx_phy_page_put(chip, phy); - } - - return err; -} - -static int mv88e6xxx_serdes_read(struct mv88e6xxx_chip *chip, int reg, u16 *val) -{ - return mv88e6xxx_phy_page_read(chip, ADDR_SERDES, SERDES_PAGE_FIBER, - reg, val); -} - -static int mv88e6xxx_serdes_write(struct mv88e6xxx_chip *chip, int reg, u16 val) -{ - return mv88e6xxx_phy_page_write(chip, ADDR_SERDES, SERDES_PAGE_FIBER, - reg, val); -} - static void mv88e6xxx_g1_irq_mask(struct irq_data *d) { struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d); @@ -561,122 +448,6 @@ int mv88e6xxx_update(struct mv88e6xxx_chip *chip, int addr, int reg, u16 update) return mv88e6xxx_write(chip, addr, reg, val); } -static int mv88e6xxx_ppu_disable(struct mv88e6xxx_chip *chip) -{ - if (!chip->info->ops->ppu_disable) - return 0; - - return chip->info->ops->ppu_disable(chip); -} - -static int mv88e6xxx_ppu_enable(struct mv88e6xxx_chip *chip) -{ - if (!chip->info->ops->ppu_enable) - return 0; - - return chip->info->ops->ppu_enable(chip); -} - -static void mv88e6xxx_ppu_reenable_work(struct work_struct *ugly) -{ - struct mv88e6xxx_chip *chip; - - chip = container_of(ugly, struct mv88e6xxx_chip, ppu_work); - - mutex_lock(&chip->reg_lock); - - if (mutex_trylock(&chip->ppu_mutex)) { - if (mv88e6xxx_ppu_enable(chip) == 0) - chip->ppu_disabled = 0; - mutex_unlock(&chip->ppu_mutex); - } - - mutex_unlock(&chip->reg_lock); -} - -static void mv88e6xxx_ppu_reenable_timer(unsigned long _ps) -{ - struct mv88e6xxx_chip *chip = (void *)_ps; - - schedule_work(&chip->ppu_work); -} - -static int mv88e6xxx_ppu_access_get(struct mv88e6xxx_chip *chip) -{ - int ret; - - mutex_lock(&chip->ppu_mutex); - - /* If the PHY polling unit is enabled, disable it so that - * we can access the PHY registers. If it was already - * disabled, cancel the timer that is going to re-enable - * it. - */ - if (!chip->ppu_disabled) { - ret = mv88e6xxx_ppu_disable(chip); - if (ret < 0) { - mutex_unlock(&chip->ppu_mutex); - return ret; - } - chip->ppu_disabled = 1; - } else { - del_timer(&chip->ppu_timer); - ret = 0; - } - - return ret; -} - -static void mv88e6xxx_ppu_access_put(struct mv88e6xxx_chip *chip) -{ - /* Schedule a timer to re-enable the PHY polling unit. */ - mod_timer(&chip->ppu_timer, jiffies + msecs_to_jiffies(10)); - mutex_unlock(&chip->ppu_mutex); -} - -static void mv88e6xxx_ppu_state_init(struct mv88e6xxx_chip *chip) -{ - mutex_init(&chip->ppu_mutex); - INIT_WORK(&chip->ppu_work, mv88e6xxx_ppu_reenable_work); - setup_timer(&chip->ppu_timer, mv88e6xxx_ppu_reenable_timer, - (unsigned long)chip); -} - -static void mv88e6xxx_ppu_state_destroy(struct mv88e6xxx_chip *chip) -{ - del_timer_sync(&chip->ppu_timer); -} - -static int mv88e6xxx_phy_ppu_read(struct mv88e6xxx_chip *chip, - struct mii_bus *bus, - int addr, int reg, u16 *val) -{ - int err; - - err = mv88e6xxx_ppu_access_get(chip); - if (!err) { - err = mv88e6xxx_read(chip, addr, reg, val); - mv88e6xxx_ppu_access_put(chip); - } - - return err; -} - -static int mv88e6xxx_phy_ppu_write(struct mv88e6xxx_chip *chip, - struct mii_bus *bus, - int addr, int reg, u16 val) -{ - int err; - - err = mv88e6xxx_ppu_access_get(chip); - if (!err) { - err = mv88e6xxx_write(chip, addr, reg, val); - mv88e6xxx_ppu_access_put(chip); - } - - return err; -} - static int mv88e6xxx_port_setup_mac(struct mv88e6xxx_chip *chip, int port, int link, int speed, int duplex, phy_interface_t mode) @@ -849,6 +620,9 @@ static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip, mv88e6xxx_g1_stats_read(chip, reg, &low); if (s->sizeof_stat == 8) mv88e6xxx_g1_stats_read(chip, reg + 1, &high); + break; + default: + return UINT64_MAX; } value = (((u64)high) << 16) | low; return value; @@ -1266,7 +1040,7 @@ static int mv88e6xxx_vtu_loadpurge(struct mv88e6xxx_chip *chip, static int mv88e6xxx_port_vlan_dump(struct dsa_switch *ds, int port, struct switchdev_obj_port_vlan *vlan, - int (*cb)(struct switchdev_obj *obj)) + switchdev_obj_dump_cb_t *cb) { struct mv88e6xxx_chip *chip = ds->priv; struct mv88e6xxx_vtu_entry next = { @@ -1697,7 +1471,7 @@ static int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port, static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip, u16 fid, u16 vid, int port, struct switchdev_obj *obj, - int (*cb)(struct switchdev_obj *obj)) + switchdev_obj_dump_cb_t *cb) { struct mv88e6xxx_atu_entry addr; int err; @@ -1752,7 +1526,7 @@ static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip, static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port, struct switchdev_obj *obj, - int (*cb)(struct switchdev_obj *obj)) + switchdev_obj_dump_cb_t *cb) { struct mv88e6xxx_vtu_entry vlan = { .vid = chip->info->max_vid, @@ -1789,7 +1563,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port, static int mv88e6xxx_port_fdb_dump(struct dsa_switch *ds, int port, struct switchdev_obj_port_fdb *fdb, - int (*cb)(struct switchdev_obj *obj)) + switchdev_obj_dump_cb_t *cb) { struct mv88e6xxx_chip *chip = ds->priv; int err; @@ -1948,24 +1722,6 @@ static int mv88e6xxx_switch_reset(struct mv88e6xxx_chip *chip) return mv88e6xxx_software_reset(chip); } -static int mv88e6xxx_serdes_power_on(struct mv88e6xxx_chip *chip) -{ - u16 val; - int err; - - /* Clear Power Down bit */ - err = mv88e6xxx_serdes_read(chip, MII_BMCR, &val); - if (err) - return err; - - if (val & BMCR_PDOWN) { - val &= ~BMCR_PDOWN; - err = mv88e6xxx_serdes_write(chip, MII_BMCR, val); - } - - return err; -} - static int mv88e6xxx_set_port_mode(struct mv88e6xxx_chip *chip, int port, enum mv88e6xxx_frame_mode frame, u16 egress, u16 etype) @@ -2047,6 +1803,15 @@ static int mv88e6xxx_setup_egress_floods(struct mv88e6xxx_chip *chip, int port) return 0; } +static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port, + bool on) +{ + if (chip->info->ops->serdes_power) + return chip->info->ops->serdes_power(chip, port, on); + + return 0; +} + static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port) { struct dsa_switch *ds = chip->ds; @@ -2097,21 +1862,14 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port) if (err) return err; - /* If this port is connected to a SerDes, make sure the SerDes is not - * powered down. + /* Enable the SERDES interface for DSA and CPU ports. Normal + * ports SERDES are enabled when the port is enabled, thus + * saving a bit of power. */ - if (mv88e6xxx_has(chip, MV88E6XXX_FLAGS_SERDES)) { - err = mv88e6xxx_port_read(chip, port, PORT_STATUS, ®); + if ((dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) { + err = mv88e6xxx_serdes_power(chip, port, true); if (err) return err; - reg &= PORT_STATUS_CMODE_MASK; - if ((reg == PORT_STATUS_CMODE_100BASE_X) || - (reg == PORT_STATUS_CMODE_1000BASE_X) || - (reg == PORT_STATUS_CMODE_SGMII)) { - err = mv88e6xxx_serdes_power_on(chip); - if (err < 0) - return err; - } } /* Port Control 2: don't force a good FCS, set the maximum frame size to @@ -2214,6 +1972,30 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port) return mv88e6xxx_port_write(chip, port, PORT_DEFAULT_VLAN, 0x0000); } +static int mv88e6xxx_port_enable(struct dsa_switch *ds, int port, + struct phy_device *phydev) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err; + + mutex_lock(&chip->reg_lock); + err = mv88e6xxx_serdes_power(chip, port, true); + mutex_unlock(&chip->reg_lock); + + return err; +} + +static void mv88e6xxx_port_disable(struct dsa_switch *ds, int port, + struct phy_device *phydev) +{ + struct mv88e6xxx_chip *chip = ds->priv; + + mutex_lock(&chip->reg_lock); + if (mv88e6xxx_serdes_power(chip, port, false)) + dev_err(chip->dev, "failed to power off SERDES\n"); + mutex_unlock(&chip->reg_lock); +} + static int mv88e6xxx_g1_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr) { int err; @@ -2877,6 +2659,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6352_g1_vtu_getnext, .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge, + .serdes_power = mv88e6352_serdes_power, }; static const struct mv88e6xxx_ops mv88e6175_ops = { @@ -2941,6 +2724,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6352_g1_vtu_getnext, .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge, + .serdes_power = mv88e6352_serdes_power, }; static const struct mv88e6xxx_ops mv88e6185_ops = { @@ -3000,6 +2784,7 @@ 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 = { @@ -3032,6 +2817,7 @@ 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 = { @@ -3064,6 +2850,7 @@ 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 = { @@ -3097,6 +2884,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6352_g1_vtu_getnext, .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge, + .serdes_power = mv88e6352_serdes_power, }; static const struct mv88e6xxx_ops mv88e6290_ops = { @@ -3130,6 +2918,7 @@ 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 = { @@ -3319,6 +3108,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = { .reset = mv88e6352_g1_reset, .vtu_getnext = mv88e6352_g1_vtu_getnext, .vtu_loadpurge = mv88e6352_g1_vtu_loadpurge, + .serdes_power = mv88e6352_serdes_power, }; static const struct mv88e6xxx_ops mv88e6390_ops = { @@ -3354,6 +3144,7 @@ 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 = { @@ -3388,6 +3179,7 @@ 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[] = { @@ -3912,18 +3704,6 @@ static struct mv88e6xxx_chip *mv88e6xxx_alloc_chip(struct device *dev) return chip; } -static void mv88e6xxx_phy_init(struct mv88e6xxx_chip *chip) -{ - if (chip->info->ops->ppu_enable && chip->info->ops->ppu_disable) - mv88e6xxx_ppu_state_init(chip); -} - -static void mv88e6xxx_phy_destroy(struct mv88e6xxx_chip *chip) -{ - if (chip->info->ops->ppu_enable && chip->info->ops->ppu_disable) - mv88e6xxx_ppu_state_destroy(chip); -} - static int mv88e6xxx_smi_init(struct mv88e6xxx_chip *chip, struct mii_bus *bus, int sw_addr) { @@ -4035,7 +3815,7 @@ static int mv88e6xxx_port_mdb_del(struct dsa_switch *ds, int port, static int mv88e6xxx_port_mdb_dump(struct dsa_switch *ds, int port, struct switchdev_obj_port_mdb *mdb, - int (*cb)(struct switchdev_obj *obj)) + switchdev_obj_dump_cb_t *cb) { struct mv88e6xxx_chip *chip = ds->priv; int err; @@ -4056,6 +3836,8 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = { .get_strings = mv88e6xxx_get_strings, .get_ethtool_stats = mv88e6xxx_get_ethtool_stats, .get_sset_count = mv88e6xxx_get_sset_count, + .port_enable = mv88e6xxx_port_enable, + .port_disable = mv88e6xxx_port_disable, .set_eee = mv88e6xxx_set_eee, .get_eee = mv88e6xxx_get_eee, .get_eeprom_len = mv88e6xxx_get_eeprom_len, |