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net: phy: aquantia: print remote capabilities if link partner is Aquantia PHY 

If both link partners are Aquantia PHY's then additional information is
exchanged as part of the auto-negotiation. Report remote capabilities
if link partner is Aquantia PHY.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-03-24 11:04:21 +01:00 committed by David S. Miller
parent 6146dd453e
commit 9d685c11bf
1 changed files with 49 additions and 0 deletions
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49
drivers/net/phy/aquantia_main.c
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@ -58,6 +58,16 @@
#define MDIO_AN_RX_LP_STAT1 0xe820
#define MDIO_AN_RX_LP_STAT1_1000BASET_FULL BIT(15)
#define MDIO_AN_RX_LP_STAT1_1000BASET_HALF BIT(14)
#define MDIO_AN_RX_LP_STAT1_SHORT_REACH BIT(13)
#define MDIO_AN_RX_LP_STAT1_AQRATE_DOWNSHIFT BIT(12)
#define MDIO_AN_RX_LP_STAT1_AQ_PHY BIT(2)
#define MDIO_AN_RX_LP_STAT4 0xe823
#define MDIO_AN_RX_LP_STAT4_FW_MAJOR GENMASK(15, 8)
#define MDIO_AN_RX_LP_STAT4_FW_MINOR GENMASK(7, 0)
#define MDIO_AN_RX_VEND_STAT3 0xe832
#define MDIO_AN_RX_VEND_STAT3_AFR BIT(0)
/* Vendor specific 1, MDIO_MMD_VEND1 */
#define VEND1_GLOBAL_INT_STD_STATUS 0xfc00
@ -357,6 +367,43 @@ static int aqcs109_config_init(struct phy_device *phydev)
return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
}
static void aqr107_link_change_notify(struct phy_device *phydev)
{
u8 fw_major, fw_minor;
bool downshift, short_reach, afr;
int val;
if (phydev->state != PHY_RUNNING || phydev->autoneg == AUTONEG_DISABLE)
return;
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT1);
/* call failed or link partner is no Aquantia PHY */
if (val < 0 || !(val & MDIO_AN_RX_LP_STAT1_AQ_PHY))
return;
short_reach = val & MDIO_AN_RX_LP_STAT1_SHORT_REACH;
downshift = val & MDIO_AN_RX_LP_STAT1_AQRATE_DOWNSHIFT;
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT4);
if (val < 0)
return;
fw_major = FIELD_GET(MDIO_AN_RX_LP_STAT4_FW_MAJOR, val);
fw_minor = FIELD_GET(MDIO_AN_RX_LP_STAT4_FW_MINOR, val);
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_VEND_STAT3);
if (val < 0)
return;
afr = val & MDIO_AN_RX_VEND_STAT3_AFR;
phydev_dbg(phydev, "Link partner is Aquantia PHY, FW %u.%u%s%s%s\n",
fw_major, fw_minor,
short_reach ? ", short reach mode" : "",
downshift ? ", fast-retrain downshift advertised" : "",
afr ? ", fast reframe advertised" : "");
}
static struct phy_driver aqr_driver[] = {
{
PHY_ID_MATCH_MODEL(PHY_ID_AQ1202),
@ -411,6 +458,7 @@ static struct phy_driver aqr_driver[] = {
.read_status = aqr107_read_status,
.get_tunable = aqr107_get_tunable,
.set_tunable = aqr107_set_tunable,
.link_change_notify = aqr107_link_change_notify,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQCS109),
@ -425,6 +473,7 @@ static struct phy_driver aqr_driver[] = {
.read_status = aqr107_read_status,
.get_tunable = aqr107_get_tunable,
.set_tunable = aqr107_set_tunable,
.link_change_notify = aqr107_link_change_notify,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR405),