diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0275-mii-Add-helpers-for-parsing-SGMII-auto-negotiation.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0275-mii-Add-helpers-for-parsing-SGMII-auto-negotiation.patch | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0275-mii-Add-helpers-for-parsing-SGMII-auto-negotiation.patch b/target/linux/layerscape/patches-5.4/701-net-0275-mii-Add-helpers-for-parsing-SGMII-auto-negotiation.patch new file mode 100644 index 0000000000..c783143dd7 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0275-mii-Add-helpers-for-parsing-SGMII-auto-negotiation.patch @@ -0,0 +1,117 @@ +From bc447c21304c1297f340d3daaf69915ebbc1f882 Mon Sep 17 00:00:00 2001 +From: Vladimir Oltean <vladimir.oltean@nxp.com> +Date: Mon, 30 Sep 2019 19:20:26 +0300 +Subject: [PATCH] mii: Add helpers for parsing SGMII auto-negotiation + +Typically a MAC PCS auto-configures itself after it receives the +negotiated link settings from the PHY, but some MAC devices are more +special and need manual manipulation of the SGMII AN result. + +Therefore, add the bit definitions for the SGMII registers 4 and 5 +(local device ability, link partner ability), as well as a link_mode +conversion helper that can be used to feed the AN results into +phy_resolve_aneg_linkmode. + +Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> +--- + include/linux/mii.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++ + include/uapi/linux/mii.h | 10 ++++++++++ + 2 files changed, 60 insertions(+) + +--- a/include/linux/mii.h ++++ b/include/linux/mii.h +@@ -373,6 +373,56 @@ static inline u32 mii_lpa_to_ethtool_lpa + } + + /** ++ * mii_lpa_mod_linkmode_adv_sgmii ++ * @lp_advertising: pointer to destination link mode. ++ * @lpa: value of the MII_LPA register ++ * ++ * A small helper function that translates MII_LPA bits to ++ * linkmode advertisement settings for SGMII. ++ * Leaves other bits unchanged. ++ */ ++static inline void ++mii_lpa_mod_linkmode_lpa_sgmii(unsigned long *lp_advertising, u32 lpa) ++{ ++ u32 speed_duplex = lpa & LPA_SGMII_DPX_SPD_MASK; ++ ++ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, lp_advertising, ++ speed_duplex == LPA_SGMII_1000HALF); ++ ++ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, lp_advertising, ++ speed_duplex == LPA_SGMII_1000FULL); ++ ++ linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, lp_advertising, ++ speed_duplex == LPA_SGMII_100HALF); ++ ++ linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, lp_advertising, ++ speed_duplex == LPA_SGMII_100FULL); ++ ++ linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, lp_advertising, ++ speed_duplex == LPA_SGMII_10HALF); ++ ++ linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, lp_advertising, ++ speed_duplex == LPA_SGMII_10FULL); ++} ++ ++/** ++ * mii_lpa_to_linkmode_adv_sgmii ++ * @advertising: pointer to destination link mode. ++ * @lpa: value of the MII_LPA register ++ * ++ * A small helper function that translates MII_ADVERTISE bits ++ * to linkmode advertisement settings when in SGMII mode. ++ * Clears the old value of advertising. ++ */ ++static inline void mii_lpa_to_linkmode_lpa_sgmii(unsigned long *lp_advertising, ++ u32 lpa) ++{ ++ linkmode_zero(lp_advertising); ++ ++ mii_lpa_mod_linkmode_lpa_sgmii(lp_advertising, lpa); ++} ++ ++/** + * mii_adv_mod_linkmode_adv_t + * @advertising:pointer to destination link mode. + * @adv: value of the MII_ADVERTISE register +--- a/include/uapi/linux/mii.h ++++ b/include/uapi/linux/mii.h +@@ -71,6 +71,7 @@ + /* Advertisement control register. */ + #define ADVERTISE_SLCT 0x001f /* Selector bits */ + #define ADVERTISE_CSMA 0x0001 /* Only selector supported */ ++#define ADVERTISE_SGMII 0x0001 /* Can do SGMII */ + #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ + #define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ + #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ +@@ -94,6 +95,7 @@ + + /* Link partner ability register. */ + #define LPA_SLCT 0x001f /* Same as advertise selector */ ++#define LPA_SGMII 0x0001 /* Can do SGMII */ + #define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ + #define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ + #define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ +@@ -104,11 +106,19 @@ + #define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ + #define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ + #define LPA_PAUSE_CAP 0x0400 /* Can pause */ ++#define LPA_SGMII_DPX_SPD_MASK 0x1C00 /* SGMII duplex and speed bits */ ++#define LPA_SGMII_10HALF 0x0000 /* Can do SGMII 10mbps half-duplex */ ++#define LPA_SGMII_10FULL 0x1000 /* Can do SGMII 10mbps full-duplex */ ++#define LPA_SGMII_100HALF 0x0400 /* Can do SGMII 100mbps half-duplex */ ++#define LPA_SGMII_100FULL 0x1400 /* Can do SGMII 100mbps full-duplex */ + #define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ ++#define LPA_SGMII_1000HALF 0x0800 /* Can do SGMII 1000mbps half-duplex */ ++#define LPA_SGMII_1000FULL 0x1800 /* Can do SGMII 1000mbps full-duplex */ + #define LPA_RESV 0x1000 /* Unused... */ + #define LPA_RFAULT 0x2000 /* Link partner faulted */ + #define LPA_LPACK 0x4000 /* Link partner acked us */ + #define LPA_NPAGE 0x8000 /* Next page bit */ ++#define LPA_SGMII_LINK 0x8000 /* Link partner has link */ + + #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) + #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) |