diff options
Diffstat (limited to 'drivers/net/phy/marvell.c')
| -rw-r--r-- | drivers/net/phy/marvell.c | 346 |
1 files changed, 328 insertions, 18 deletions
diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index ec2c1eee6405..c2dcf02df202 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -138,6 +138,21 @@ #define MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII 0x1 /* SGMII to copper */ #define MII_88E1510_GEN_CTRL_REG_1_RESET 0x8000 /* Soft reset */ +#define LPA_FIBER_1000HALF 0x40 +#define LPA_FIBER_1000FULL 0x20 + +#define LPA_PAUSE_FIBER 0x180 +#define LPA_PAUSE_ASYM_FIBER 0x100 + +#define ADVERTISE_FIBER_1000HALF 0x40 +#define ADVERTISE_FIBER_1000FULL 0x20 + +#define ADVERTISE_PAUSE_FIBER 0x180 +#define ADVERTISE_PAUSE_ASYM_FIBER 0x100 + +#define REGISTER_LINK_STATUS 0x400 +#define NB_FIBER_STATS 1 + MODULE_DESCRIPTION("Marvell PHY driver"); MODULE_AUTHOR("Andy Fleming"); MODULE_LICENSE("GPL"); @@ -150,8 +165,9 @@ struct marvell_hw_stat { }; static struct marvell_hw_stat marvell_hw_stats[] = { - { "phy_receive_errors", 0, 21, 16}, + { "phy_receive_errors_copper", 0, 21, 16}, { "phy_idle_errors", 0, 10, 8 }, + { "phy_receive_errors_fiber", 1, 21, 16}, }; struct marvell_priv { @@ -477,15 +493,122 @@ static int m88e1318_config_aneg(struct phy_device *phydev) return m88e1121_config_aneg(phydev); } +/** + * ethtool_adv_to_fiber_adv_t + * @ethadv: the ethtool advertisement settings + * + * A small helper function that translates ethtool advertisement + * settings to phy autonegotiation advertisements for the + * MII_ADV register for fiber link. + */ +static inline u32 ethtool_adv_to_fiber_adv_t(u32 ethadv) +{ + u32 result = 0; + + if (ethadv & ADVERTISED_1000baseT_Half) + result |= ADVERTISE_FIBER_1000HALF; + if (ethadv & ADVERTISED_1000baseT_Full) + result |= ADVERTISE_FIBER_1000FULL; + + if ((ethadv & ADVERTISE_PAUSE_ASYM) && (ethadv & ADVERTISE_PAUSE_CAP)) + result |= LPA_PAUSE_ASYM_FIBER; + else if (ethadv & ADVERTISE_PAUSE_CAP) + result |= (ADVERTISE_PAUSE_FIBER + & (~ADVERTISE_PAUSE_ASYM_FIBER)); + + return result; +} + +/** + * marvell_config_aneg_fiber - restart auto-negotiation or write BMCR + * @phydev: target phy_device struct + * + * Description: If auto-negotiation is enabled, we configure the + * advertising, and then restart auto-negotiation. If it is not + * enabled, then we write the BMCR. Adapted for fiber link in + * some Marvell's devices. + */ +static int marvell_config_aneg_fiber(struct phy_device *phydev) +{ + int changed = 0; + int err; + int adv, oldadv; + u32 advertise; + + if (phydev->autoneg != AUTONEG_ENABLE) + return genphy_setup_forced(phydev); + + /* Only allow advertising what this PHY supports */ + phydev->advertising &= phydev->supported; + advertise = phydev->advertising; + + /* Setup fiber advertisement */ + adv = phy_read(phydev, MII_ADVERTISE); + if (adv < 0) + return adv; + + oldadv = adv; + adv &= ~(ADVERTISE_FIBER_1000HALF | ADVERTISE_FIBER_1000FULL + | LPA_PAUSE_FIBER); + adv |= ethtool_adv_to_fiber_adv_t(advertise); + + if (adv != oldadv) { + err = phy_write(phydev, MII_ADVERTISE, adv); + if (err < 0) + return err; + + changed = 1; + } + + if (changed == 0) { + /* Advertisement hasn't changed, but maybe aneg was never on to + * begin with? Or maybe phy was isolated? + */ + int ctl = phy_read(phydev, MII_BMCR); + + if (ctl < 0) + return ctl; + + if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) + changed = 1; /* do restart aneg */ + } + + /* Only restart aneg if we are advertising something different + * than we were before. + */ + if (changed > 0) + changed = genphy_restart_aneg(phydev); + + return changed; +} + static int m88e1510_config_aneg(struct phy_device *phydev) { int err; + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + if (err < 0) + goto error; + + /* Configure the copper link first */ err = m88e1318_config_aneg(phydev); if (err < 0) - return err; + goto error; - return 0; + /* Then the fiber link */ + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_FIBER); + if (err < 0) + goto error; + + err = marvell_config_aneg_fiber(phydev); + if (err < 0) + goto error; + + return phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + +error: + phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + return err; } static int marvell_config_init(struct phy_device *phydev) @@ -890,26 +1013,79 @@ static int m88e1145_config_init(struct phy_device *phydev) return 0; } -/* marvell_read_status +/** + * fiber_lpa_to_ethtool_lpa_t + * @lpa: value of the MII_LPA register for fiber link + * + * A small helper function that translates MII_LPA + * bits to ethtool LP advertisement settings. + */ +static u32 fiber_lpa_to_ethtool_lpa_t(u32 lpa) +{ + u32 result = 0; + + if (lpa & LPA_FIBER_1000HALF) + result |= ADVERTISED_1000baseT_Half; + if (lpa & LPA_FIBER_1000FULL) + result |= ADVERTISED_1000baseT_Full; + + return result; +} + +/** + * marvell_update_link - update link status in real time in @phydev + * @phydev: target phy_device struct + * + * Description: Update the value in phydev->link to reflect the + * current link value. + */ +static int marvell_update_link(struct phy_device *phydev, int fiber) +{ + int status; + + /* Use the generic register for copper link, or specific + * register for fiber case */ + if (fiber) { + status = phy_read(phydev, MII_M1011_PHY_STATUS); + if (status < 0) + return status; + + if ((status & REGISTER_LINK_STATUS) == 0) + phydev->link = 0; + else + phydev->link = 1; + } else { + return genphy_update_link(phydev); + } + + return 0; +} + +/* marvell_read_status_page * - * Generic status code does not detect Fiber correctly! * Description: * Check the link, then figure out the current state * by comparing what we advertise with what the link partner * advertises. Start by checking the gigabit possibilities, * then move on to 10/100. */ -static int marvell_read_status(struct phy_device *phydev) +static int marvell_read_status_page(struct phy_device *phydev, int page) { int adv; int err; int lpa; int lpagb; int status = 0; + int fiber; - /* Update the link, but return if there + /* Detect and update the link, but return if there * was an error */ - err = genphy_update_link(phydev); + if (page == MII_M1111_FIBER) + fiber = 1; + else + fiber = 0; + + err = marvell_update_link(phydev, fiber); if (err) return err; @@ -930,9 +1106,6 @@ static int marvell_read_status(struct phy_device *phydev) if (adv < 0) return adv; - phydev->lp_advertising = mii_stat1000_to_ethtool_lpa_t(lpagb) | - mii_lpa_to_ethtool_lpa_t(lpa); - lpa &= adv; if (status & MII_M1011_PHY_STATUS_FULLDUPLEX) @@ -957,9 +1130,30 @@ static int marvell_read_status(struct phy_device *phydev) break; } - if (phydev->duplex == DUPLEX_FULL) { - phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; - phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; + if (!fiber) { + phydev->lp_advertising = mii_stat1000_to_ethtool_lpa_t(lpagb) | + mii_lpa_to_ethtool_lpa_t(lpa); + + if (phydev->duplex == DUPLEX_FULL) { + phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; + phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; + } + } else { + /* The fiber link is only 1000M capable */ + phydev->lp_advertising = fiber_lpa_to_ethtool_lpa_t(lpa); + + if (phydev->duplex == DUPLEX_FULL) { + if (!(lpa & LPA_PAUSE_FIBER)) { + phydev->pause = 0; + phydev->asym_pause = 0; + } else if ((lpa & LPA_PAUSE_ASYM_FIBER)) { + phydev->pause = 1; + phydev->asym_pause = 1; + } else { + phydev->pause = 1; + phydev->asym_pause = 0; + } + } } } else { int bmcr = phy_read(phydev, MII_BMCR); @@ -986,6 +1180,119 @@ static int marvell_read_status(struct phy_device *phydev) return 0; } +/* marvell_read_status + * + * Some Marvell's phys have two modes: fiber and copper. + * Both need status checked. + * Description: + * First, check the fiber link and status. + * If the fiber link is down, check the copper link and status which + * will be the default value if both link are down. + */ +static int marvell_read_status(struct phy_device *phydev) +{ + int err; + + /* Check the fiber mode first */ + if (phydev->supported & SUPPORTED_FIBRE) { + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_FIBER); + if (err < 0) + goto error; + + err = marvell_read_status_page(phydev, MII_M1111_FIBER); + if (err < 0) + goto error; + + /* If the fiber link is up, it is the selected and used link. + * In this case, we need to stay in the fiber page. + * Please to be careful about that, avoid to restore Copper page + * in other functions which could break the behaviour + * for some fiber phy like 88E1512. + * */ + if (phydev->link) + return 0; + + /* If fiber link is down, check and save copper mode state */ + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + if (err < 0) + goto error; + } + + return marvell_read_status_page(phydev, MII_M1111_COPPER); + +error: + phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + return err; +} + +/* marvell_suspend + * + * Some Marvell's phys have two modes: fiber and copper. + * Both need to be suspended + */ +static int marvell_suspend(struct phy_device *phydev) +{ + int err; + + /* Suspend the fiber mode first */ + if (!(phydev->supported & SUPPORTED_FIBRE)) { + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_FIBER); + if (err < 0) + goto error; + + /* With the page set, use the generic suspend */ + err = genphy_suspend(phydev); + if (err < 0) + goto error; + + /* Then, the copper link */ + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + if (err < 0) + goto error; + } + + /* With the page set, use the generic suspend */ + return genphy_suspend(phydev); + +error: + phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + return err; +} + +/* marvell_resume + * + * Some Marvell's phys have two modes: fiber and copper. + * Both need to be resumed + */ +static int marvell_resume(struct phy_device *phydev) +{ + int err; + + /* Resume the fiber mode first */ + if (!(phydev->supported & SUPPORTED_FIBRE)) { + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_FIBER); + if (err < 0) + goto error; + + /* With the page set, use the generic resume */ + err = genphy_resume(phydev); + if (err < 0) + goto error; + + /* Then, the copper link */ + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + if (err < 0) + goto error; + } + + /* With the page set, use the generic resume */ + return genphy_resume(phydev); + +error: + phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER); + return err; +} + static int marvell_aneg_done(struct phy_device *phydev) { int retval = phy_read(phydev, MII_M1011_PHY_STATUS); @@ -1107,7 +1414,10 @@ static int m88e1318_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *w static int marvell_get_sset_count(struct phy_device *phydev) { - return ARRAY_SIZE(marvell_hw_stats); + if (phydev->supported & SUPPORTED_FIBRE) + return ARRAY_SIZE(marvell_hw_stats); + else + return ARRAY_SIZE(marvell_hw_stats) - NB_FIBER_STATS; } static void marvell_get_strings(struct phy_device *phydev, u8 *data) @@ -1361,7 +1671,7 @@ static struct phy_driver marvell_drivers[] = { .phy_id = MARVELL_PHY_ID_88E1510, .phy_id_mask = MARVELL_PHY_ID_MASK, .name = "Marvell 88E1510", - .features = PHY_GBIT_FEATURES, + .features = PHY_GBIT_FEATURES | SUPPORTED_FIBRE, .flags = PHY_HAS_INTERRUPT, .probe = marvell_probe, .config_init = &m88e1510_config_init, @@ -1370,8 +1680,8 @@ static struct phy_driver marvell_drivers[] = { .ack_interrupt = &marvell_ack_interrupt, .config_intr = &marvell_config_intr, .did_interrupt = &m88e1121_did_interrupt, - .resume = &genphy_resume, - .suspend = &genphy_suspend, + .resume = &marvell_resume, + .suspend = &marvell_suspend, .get_sset_count = marvell_get_sset_count, .get_strings = marvell_get_strings, .get_stats = marvell_get_stats, |