summaryrefslogtreecommitdiff
path: root/drivers/net/phy/marvell.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/phy/marvell.c')
-rw-r--r--drivers/net/phy/marvell.c346
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,