diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/750-v5.5-net-phy-add-support-for-clause-37-auto-negotiation.patch')
-rw-r--r-- | target/linux/generic/backport-5.4/750-v5.5-net-phy-add-support-for-clause-37-auto-negotiation.patch | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/target/linux/generic/backport-5.4/750-v5.5-net-phy-add-support-for-clause-37-auto-negotiation.patch b/target/linux/generic/backport-5.4/750-v5.5-net-phy-add-support-for-clause-37-auto-negotiation.patch deleted file mode 100644 index 69c56eca7a..0000000000 --- a/target/linux/generic/backport-5.4/750-v5.5-net-phy-add-support-for-clause-37-auto-negotiation.patch +++ /dev/null @@ -1,195 +0,0 @@ -From fa6e98cee558622565c97924e922b97340aeabd8 Mon Sep 17 00:00:00 2001 -From: Heiner Kallweit <hkallweit1@gmail.com> -Date: Tue, 22 Oct 2019 11:31:07 -0700 -Subject: [PATCH] net: phy: add support for clause 37 auto-negotiation -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This patch adds support for clause 37 1000Base-X auto-negotiation. - -Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> -Signed-off-by: Tao Ren <taoren@fb.com> -Tested-by: René van Dorst <opensource@vdorst.com> -Reviewed-by: Andrew Lunn <andrew@lunn.ch> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/phy/phy_device.c | 139 +++++++++++++++++++++++++++++++++++ - include/linux/phy.h | 4 + - 2 files changed, 143 insertions(+) - ---- a/drivers/net/phy/phy_device.c -+++ b/drivers/net/phy/phy_device.c -@@ -1682,6 +1682,40 @@ static int genphy_config_advert(struct p - } - - /** -+ * genphy_c37_config_advert - sanitize and advertise auto-negotiation parameters -+ * @phydev: target phy_device struct -+ * -+ * Description: Writes MII_ADVERTISE with the appropriate values, -+ * after sanitizing the values to make sure we only advertise -+ * what is supported. Returns < 0 on error, 0 if the PHY's advertisement -+ * hasn't changed, and > 0 if it has changed. This function is intended -+ * for Clause 37 1000Base-X mode. -+ */ -+static int genphy_c37_config_advert(struct phy_device *phydev) -+{ -+ u16 adv = 0; -+ -+ /* Only allow advertising what this PHY supports */ -+ linkmode_and(phydev->advertising, phydev->advertising, -+ phydev->supported); -+ -+ if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, -+ phydev->advertising)) -+ adv |= ADVERTISE_1000XFULL; -+ if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, -+ phydev->advertising)) -+ adv |= ADVERTISE_1000XPAUSE; -+ if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, -+ phydev->advertising)) -+ adv |= ADVERTISE_1000XPSE_ASYM; -+ -+ return phy_modify_changed(phydev, MII_ADVERTISE, -+ ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE | -+ ADVERTISE_1000XHALF | ADVERTISE_1000XPSE_ASYM, -+ adv); -+} -+ -+/** - * genphy_config_eee_advert - disable unwanted eee mode advertisement - * @phydev: target phy_device struct - * -@@ -1790,6 +1824,54 @@ int __genphy_config_aneg(struct phy_devi - EXPORT_SYMBOL(__genphy_config_aneg); - - /** -+ * genphy_c37_config_aneg - 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. This function is intended -+ * for use with Clause 37 1000Base-X mode. -+ */ -+int genphy_c37_config_aneg(struct phy_device *phydev) -+{ -+ int err, changed; -+ -+ if (phydev->autoneg != AUTONEG_ENABLE) -+ return genphy_setup_forced(phydev); -+ -+ err = phy_modify(phydev, MII_BMCR, BMCR_SPEED1000 | BMCR_SPEED100, -+ BMCR_SPEED1000); -+ if (err) -+ return err; -+ -+ changed = genphy_c37_config_advert(phydev); -+ if (changed < 0) /* error */ -+ return changed; -+ -+ if (!changed) { -+ /* 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) -+ return genphy_restart_aneg(phydev); -+ -+ return 0; -+} -+EXPORT_SYMBOL(genphy_c37_config_aneg); -+ -+/** - * genphy_aneg_done - return auto-negotiation status - * @phydev: target phy_device struct - * -@@ -1962,6 +2044,63 @@ int genphy_read_status(struct phy_device - EXPORT_SYMBOL(genphy_read_status); - - /** -+ * genphy_c37_read_status - check the link status and update current link state -+ * @phydev: target phy_device struct -+ * -+ * Description: Check the link, then figure out the current state -+ * by comparing what we advertise with what the link partner -+ * advertises. This function is for Clause 37 1000Base-X mode. -+ */ -+int genphy_c37_read_status(struct phy_device *phydev) -+{ -+ int lpa, err, old_link = phydev->link; -+ -+ /* Update the link, but return if there was an error */ -+ err = genphy_update_link(phydev); -+ if (err) -+ return err; -+ -+ /* why bother the PHY if nothing can have changed */ -+ if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link) -+ return 0; -+ -+ phydev->duplex = DUPLEX_UNKNOWN; -+ phydev->pause = 0; -+ phydev->asym_pause = 0; -+ -+ if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { -+ lpa = phy_read(phydev, MII_LPA); -+ if (lpa < 0) -+ return lpa; -+ -+ linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, -+ phydev->lp_advertising, lpa & LPA_LPACK); -+ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, -+ phydev->lp_advertising, lpa & LPA_1000XFULL); -+ linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, -+ phydev->lp_advertising, lpa & LPA_1000XPAUSE); -+ linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, -+ phydev->lp_advertising, -+ lpa & LPA_1000XPAUSE_ASYM); -+ -+ phy_resolve_aneg_linkmode(phydev); -+ } else if (phydev->autoneg == AUTONEG_DISABLE) { -+ int bmcr = phy_read(phydev, MII_BMCR); -+ -+ if (bmcr < 0) -+ return bmcr; -+ -+ if (bmcr & BMCR_FULLDPLX) -+ phydev->duplex = DUPLEX_FULL; -+ else -+ phydev->duplex = DUPLEX_HALF; -+ } -+ -+ return 0; -+} -+EXPORT_SYMBOL(genphy_c37_read_status); -+ -+/** - * genphy_soft_reset - software reset the PHY via BMCR_RESET bit - * @phydev: target phy_device struct - * ---- a/include/linux/phy.h -+++ b/include/linux/phy.h -@@ -1120,6 +1120,10 @@ int genphy_read_mmd_unsupported(struct p - int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum, - u16 regnum, u16 val); - -+/* Clause 37 */ -+int genphy_c37_config_aneg(struct phy_device *phydev); -+int genphy_c37_read_status(struct phy_device *phydev); -+ - /* Clause 45 PHY */ - int genphy_c45_restart_aneg(struct phy_device *phydev); - int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart); |