diff options
| author | Russell King <linux@armlinux.org.uk> | 2019-11-27 11:45:25 +0000 |
|---|---|---|
| committer | Jonas Gorski <jonas.gorski@gmail.com> | 2020-01-21 22:32:48 +0100 |
| commit | 1c16b574c4f77a30a0268acee30be96ae0dc5948 (patch) | |
| tree | 716fd94ee81e332ba19e1af7bf98371120ea1856 | |
| parent | a07638eb24b8310a35ea6c3b09f6db59bb31cd68 (diff) | |
| download | upstream-1c16b574c4f77a30a0268acee30be96ae0dc5948.tar.gz upstream-1c16b574c4f77a30a0268acee30be96ae0dc5948.tar.bz2 upstream-1c16b574c4f77a30a0268acee30be96ae0dc5948.zip | |
kernel: add backported phy/phylink/sfp patches
Backport the phy/phylink/sfp patches currently queued in netdev or in
mainline necessary to support GPON popular modules, specifically to
support Huawei and Nokia GPON modules.
Signed-off-by: Russell King <linux@armlinux.org.uk>
[jonas.gorski: include kernel version in file names, refresh patches]
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
43 files changed, 4575 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.19/702-v4.20-net-ethernet-Add-helper-for-MACs-which-support-asym-.patch b/target/linux/generic/backport-4.19/702-v4.20-net-ethernet-Add-helper-for-MACs-which-support-asym-.patch new file mode 100644 index 0000000000..ee6e6a6dac --- /dev/null +++ b/target/linux/generic/backport-4.19/702-v4.20-net-ethernet-Add-helper-for-MACs-which-support-asym-.patch @@ -0,0 +1,49 @@ +From 1da223db3a0c522300b519ecbe1dc45927e28088 Mon Sep 17 00:00:00 2001 +From: Andrew Lunn <andrew@lunn.ch> +Date: Wed, 12 Sep 2018 01:53:15 +0200 +Subject: [PATCH 600/660] net: ethernet: Add helper for MACs which support asym + pause + +Rather than have the MAC drivers manipulate phydev members to indicate +they support Asym Pause, add a helper function. + +Signed-off-by: Andrew Lunn <andrew@lunn.ch> +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/phy_device.c | 13 +++++++++++++ + include/linux/phy.h | 1 + + 2 files changed, 14 insertions(+) + +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -1776,6 +1776,19 @@ int phy_set_max_speed(struct phy_device + } + EXPORT_SYMBOL(phy_set_max_speed); + ++/** ++ * phy_support_asym_pause - Enable support of asym pause ++ * @phydev: target phy_device struct ++ * ++ * Description: Called by the MAC to indicate is supports Asym Pause. ++ */ ++void phy_support_asym_pause(struct phy_device *phydev) ++{ ++ phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; ++ phydev->advertising = phydev->supported; ++} ++EXPORT_SYMBOL(phy_support_asym_pause); ++ + static void of_set_phy_supported(struct phy_device *phydev) + { + struct device_node *node = phydev->mdio.dev.of_node; +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -1049,6 +1049,7 @@ int phy_mii_ioctl(struct phy_device *phy + int phy_start_interrupts(struct phy_device *phydev); + void phy_print_status(struct phy_device *phydev); + int phy_set_max_speed(struct phy_device *phydev, u32 max_speed); ++void phy_support_asym_pause(struct phy_device *phydev); + + int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, + int (*run)(struct phy_device *)); diff --git a/target/linux/generic/backport-4.19/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch b/target/linux/generic/backport-4.19/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch new file mode 100644 index 0000000000..8d68fbfe0f --- /dev/null +++ b/target/linux/generic/backport-4.19/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch @@ -0,0 +1,66 @@ +From ce825df56e0480a2cbb296e38976babafb57e503 Mon Sep 17 00:00:00 2001 +From: Andrew Lunn <andrew@lunn.ch> +Date: Wed, 12 Sep 2018 01:53:17 +0200 +Subject: [PATCH 601/660] net: ethernet: Add helper for set_pauseparam for Asym + Pause + +ethtool can be used to enable/disable pause. Add a helper to configure +the PHY when asym pause is supported. + +Signed-off-by: Andrew Lunn <andrew@lunn.ch> +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/phy_device.c | 30 ++++++++++++++++++++++++++++++ + include/linux/phy.h | 1 + + 2 files changed, 31 insertions(+) + +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -1789,6 +1789,36 @@ void phy_support_asym_pause(struct phy_d + } + EXPORT_SYMBOL(phy_support_asym_pause); + ++/** ++ * phy_set_asym_pause - Configure Pause and Asym Pause ++ * @phydev: target phy_device struct ++ * @rx: Receiver Pause is supported ++ * @tx: Transmit Pause is supported ++ * ++ * Description: Configure advertised Pause support depending on if ++ * transmit and receiver pause is supported. If there has been a ++ * change in adverting, trigger a new autoneg. Generally called from ++ * the set_pauseparam .ndo. ++ */ ++void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx) ++{ ++ u16 oldadv = phydev->advertising; ++ u16 newadv = oldadv &= ~(SUPPORTED_Pause | SUPPORTED_Asym_Pause); ++ ++ if (rx) ++ newadv |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; ++ if (tx) ++ newadv ^= SUPPORTED_Asym_Pause; ++ ++ if (oldadv != newadv) { ++ phydev->advertising = newadv; ++ ++ if (phydev->autoneg) ++ phy_start_aneg(phydev); ++ } ++} ++EXPORT_SYMBOL(phy_set_asym_pause); ++ + static void of_set_phy_supported(struct phy_device *phydev) + { + struct device_node *node = phydev->mdio.dev.of_node; +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -1050,6 +1050,7 @@ int phy_start_interrupts(struct phy_devi + void phy_print_status(struct phy_device *phydev); + int phy_set_max_speed(struct phy_device *phydev, u32 max_speed); + void phy_support_asym_pause(struct phy_device *phydev); ++void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx); + + int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, + int (*run)(struct phy_device *)); diff --git a/target/linux/generic/backport-4.19/704-v4.20-net-phy-Stop-with-excessive-soft-reset.patch b/target/linux/generic/backport-4.19/704-v4.20-net-phy-Stop-with-excessive-soft-reset.patch new file mode 100644 index 0000000000..77ad5b96dd --- /dev/null +++ b/target/linux/generic/backport-4.19/704-v4.20-net-phy-Stop-with-excessive-soft-reset.patch @@ -0,0 +1,40 @@ +From 1541649a9dd79e9b941d399de564475e426a2d0b Mon Sep 17 00:00:00 2001 +From: Florian Fainelli <f.fainelli@gmail.com> +Date: Tue, 25 Sep 2018 11:28:45 -0700 +Subject: [PATCH 602/660] net: phy: Stop with excessive soft reset + +While consolidating the PHY reset in phy_init_hw() an unconditionaly +BMCR soft-reset I became quite trigger happy with those. This was later +on deactivated for the Generic PHY driver on the premise that a prior +software entity (e.g: bootloader) might have applied workarounds in +commit 0878fff1f42c ("net: phy: Do not perform software reset for +Generic PHY"). + +Since we have a hook to wire-up a soft_reset callback, just use that and +get rid of the call to genphy_soft_reset() entirely. This speeds up +initialization and link establishment for most PHYs out there that do +not require a reset. + +Fixes: 87aa9f9c61ad ("net: phy: consolidate PHY reset in phy_init_hw()") +Tested-by: Wang, Dongsheng <dongsheng.wang@hxt-semitech.com> +Tested-by: Chris Healy <cphealy@gmail.com> +Tested-by: Andrew Lunn <andrew@lunn.ch> +Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com> +Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy_device.c | 2 -- + 1 file changed, 2 deletions(-) + +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -885,8 +885,6 @@ int phy_init_hw(struct phy_device *phyde + + if (phydev->drv->soft_reset) + ret = phydev->drv->soft_reset(phydev); +- else +- ret = genphy_soft_reset(phydev); + + if (ret < 0) + return ret; diff --git a/target/linux/generic/backport-4.19/705-v5.1-net-phy-provide-full-set-of-accessor-functions-to-MM.patch b/target/linux/generic/backport-4.19/705-v5.1-net-phy-provide-full-set-of-accessor-functions-to-MM.patch new file mode 100644 index 0000000000..9a587ad3a6 --- /dev/null +++ b/target/linux/generic/backport-4.19/705-v5.1-net-phy-provide-full-set-of-accessor-functions-to-MM.patch @@ -0,0 +1,375 @@ +From 80758d9542205cd2e9fa730067bc3888d4f5a096 Mon Sep 17 00:00:00 2001 +From: Nikita Yushchenko <nikita.yoush@cogentembedded.com> +Date: Wed, 6 Feb 2019 07:36:40 +0100 +Subject: [PATCH 603/660] net: phy: provide full set of accessor functions to + MMD registers + +This adds full set of locked and unlocked accessor functions to read and +write PHY MMD registers and/or bitfields. + +Set of functions exactly matches what is already available for PHY +legacy registers. + +Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> +Signed-off-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy-core.c | 116 ++++++++++++++++++++++++++++---- + include/linux/phy.h | 134 ++++++++++++++++++++++++++++++------- + 2 files changed, 214 insertions(+), 36 deletions(-) + +--- a/drivers/net/phy/phy-core.c ++++ b/drivers/net/phy/phy-core.c +@@ -247,15 +247,15 @@ static void mmd_phy_indirect(struct mii_ + } + + /** +- * phy_read_mmd - Convenience function for reading a register ++ * __phy_read_mmd - Convenience function for reading a register + * from an MMD on a given PHY. + * @phydev: The phy_device struct + * @devad: The MMD to read from (0..31) + * @regnum: The register on the MMD to read (0..65535) + * +- * Same rules as for phy_read(); ++ * Same rules as for __phy_read(); + */ +-int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum) ++int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum) + { + int val; + +@@ -267,33 +267,52 @@ int phy_read_mmd(struct phy_device *phyd + } else if (phydev->is_c45) { + u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff); + +- val = mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, addr); ++ val = __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, addr); + } else { + struct mii_bus *bus = phydev->mdio.bus; + int phy_addr = phydev->mdio.addr; + +- mutex_lock(&bus->mdio_lock); + mmd_phy_indirect(bus, phy_addr, devad, regnum); + + /* Read the content of the MMD's selected register */ + val = __mdiobus_read(bus, phy_addr, MII_MMD_DATA); +- mutex_unlock(&bus->mdio_lock); + } + return val; + } ++EXPORT_SYMBOL(__phy_read_mmd); ++ ++/** ++ * phy_read_mmd - Convenience function for reading a register ++ * from an MMD on a given PHY. ++ * @phydev: The phy_device struct ++ * @devad: The MMD to read from ++ * @regnum: The register on the MMD to read ++ * ++ * Same rules as for phy_read(); ++ */ ++int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum) ++{ ++ int ret; ++ ++ mutex_lock(&phydev->mdio.bus->mdio_lock); ++ ret = __phy_read_mmd(phydev, devad, regnum); ++ mutex_unlock(&phydev->mdio.bus->mdio_lock); ++ ++ return ret; ++} + EXPORT_SYMBOL(phy_read_mmd); + + /** +- * phy_write_mmd - Convenience function for writing a register ++ * __phy_write_mmd - Convenience function for writing a register + * on an MMD on a given PHY. + * @phydev: The phy_device struct + * @devad: The MMD to read from + * @regnum: The register on the MMD to read + * @val: value to write to @regnum + * +- * Same rules as for phy_write(); ++ * Same rules as for __phy_write(); + */ +-int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) ++int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) + { + int ret; + +@@ -305,23 +324,43 @@ int phy_write_mmd(struct phy_device *phy + } else if (phydev->is_c45) { + u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff); + +- ret = mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, +- addr, val); ++ ret = __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, ++ addr, val); + } else { + struct mii_bus *bus = phydev->mdio.bus; + int phy_addr = phydev->mdio.addr; + +- mutex_lock(&bus->mdio_lock); + mmd_phy_indirect(bus, phy_addr, devad, regnum); + + /* Write the data into MMD's selected register */ + __mdiobus_write(bus, phy_addr, MII_MMD_DATA, val); +- mutex_unlock(&bus->mdio_lock); + + ret = 0; + } + return ret; + } ++EXPORT_SYMBOL(__phy_write_mmd); ++ ++/** ++ * phy_write_mmd - Convenience function for writing a register ++ * on an MMD on a given PHY. ++ * @phydev: The phy_device struct ++ * @devad: The MMD to read from ++ * @regnum: The register on the MMD to read ++ * @val: value to write to @regnum ++ * ++ * Same rules as for phy_write(); ++ */ ++int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) ++{ ++ int ret; ++ ++ mutex_lock(&phydev->mdio.bus->mdio_lock); ++ ret = __phy_write_mmd(phydev, devad, regnum, val); ++ mutex_unlock(&phydev->mdio.bus->mdio_lock); ++ ++ return ret; ++} + EXPORT_SYMBOL(phy_write_mmd); + + /** +@@ -371,6 +410,57 @@ int phy_modify(struct phy_device *phydev + } + EXPORT_SYMBOL_GPL(phy_modify); + ++/** ++ * __phy_modify_mmd - Convenience function for modifying a register on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @mask: bit mask of bits to clear ++ * @set: new value of bits set in mask to write to @regnum ++ * ++ * Unlocked helper function which allows a MMD register to be modified as ++ * new register value = (old register value & ~mask) | set ++ */ ++int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set) ++{ ++ int ret; ++ ++ ret = __phy_read_mmd(phydev, devad, regnum); ++ if (ret < 0) ++ return ret; ++ ++ ret = __phy_write_mmd(phydev, devad, regnum, (ret & ~mask) | set); ++ ++ return ret < 0 ? ret : 0; ++} ++EXPORT_SYMBOL_GPL(__phy_modify_mmd); ++ ++/** ++ * phy_modify_mmd - Convenience function for modifying a register on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @mask: bit mask of bits to clear ++ * @set: new value of bits set in mask to write to @regnum ++ * ++ * NOTE: MUST NOT be called from interrupt context, ++ * because the bus read/write functions may wait for an interrupt ++ * to conclude the operation. ++ */ ++int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set) ++{ ++ int ret; ++ ++ mutex_lock(&phydev->mdio.bus->mdio_lock); ++ ret = __phy_modify_mmd(phydev, devad, regnum, mask, set); ++ mutex_unlock(&phydev->mdio.bus->mdio_lock); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phy_modify_mmd); ++ + static int __phy_read_page(struct phy_device *phydev) + { + return phydev->drv->read_page(phydev); +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -695,17 +695,6 @@ size_t phy_speeds(unsigned int *speeds, + void phy_resolve_aneg_linkmode(struct phy_device *phydev); + + /** +- * phy_read_mmd - Convenience function for reading a register +- * from an MMD on a given PHY. +- * @phydev: The phy_device struct +- * @devad: The MMD to read from +- * @regnum: The register on the MMD to read +- * +- * Same rules as for phy_read(); +- */ +-int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); +- +-/** + * phy_read - Convenience function for reading a given PHY register + * @phydev: the phy_device struct + * @regnum: register number to read +@@ -760,9 +749,60 @@ static inline int __phy_write(struct phy + val); + } + ++/** ++ * phy_read_mmd - Convenience function for reading a register ++ * from an MMD on a given PHY. ++ * @phydev: The phy_device struct ++ * @devad: The MMD to read from ++ * @regnum: The register on the MMD to read ++ * ++ * Same rules as for phy_read(); ++ */ ++int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); ++ ++/** ++ * __phy_read_mmd - Convenience function for reading a register ++ * from an MMD on a given PHY. ++ * @phydev: The phy_device struct ++ * @devad: The MMD to read from ++ * @regnum: The register on the MMD to read ++ * ++ * Same rules as for __phy_read(); ++ */ ++int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); ++ ++/** ++ * phy_write_mmd - Convenience function for writing a register ++ * on an MMD on a given PHY. ++ * @phydev: The phy_device struct ++ * @devad: The MMD to write to ++ * @regnum: The register on the MMD to read ++ * @val: value to write to @regnum ++ * ++ * Same rules as for phy_write(); ++ */ ++int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); ++ ++/** ++ * __phy_write_mmd - Convenience function for writing a register ++ * on an MMD on a given PHY. ++ * @phydev: The phy_device struct ++ * @devad: The MMD to write to ++ * @regnum: The register on the MMD to read ++ * @val: value to write to @regnum ++ * ++ * Same rules as for __phy_write(); ++ */ ++int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); ++ + int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); + int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); + ++int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set); ++int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set); ++ + /** + * __phy_set_bits - Convenience function for setting bits in a PHY register + * @phydev: the phy_device struct +@@ -813,6 +853,66 @@ static inline int phy_clear_bits(struct + } + + /** ++ * __phy_set_bits_mmd - Convenience function for setting bits in a register ++ * on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @val: bits to set ++ * ++ * The caller must have taken the MDIO bus lock. ++ */ ++static inline int __phy_set_bits_mmd(struct phy_device *phydev, int devad, ++ u32 regnum, u16 val) ++{ ++ return __phy_modify_mmd(phydev, devad, regnum, 0, val); ++} ++ ++/** ++ * __phy_clear_bits_mmd - Convenience function for clearing bits in a register ++ * on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @val: bits to clear ++ * ++ * The caller must have taken the MDIO bus lock. ++ */ ++static inline int __phy_clear_bits_mmd(struct phy_device *phydev, int devad, ++ u32 regnum, u16 val) ++{ ++ return __phy_modify_mmd(phydev, devad, regnum, val, 0); ++} ++ ++/** ++ * phy_set_bits_mmd - Convenience function for setting bits in a register ++ * on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @val: bits to set ++ */ ++static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad, ++ u32 regnum, u16 val) ++{ ++ return phy_modify_mmd(phydev, devad, regnum, 0, val); ++} ++ ++/** ++ * phy_clear_bits_mmd - Convenience function for clearing bits in a register ++ * on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @val: bits to clear ++ */ ++static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad, ++ u32 regnum, u16 val) ++{ ++ return phy_modify_mmd(phydev, devad, regnum, val, 0); ++} ++ ++/** + * phy_interrupt_is_valid - Convenience function for testing a given PHY irq + * @phydev: the phy_device struct + * +@@ -888,18 +988,6 @@ static inline bool phy_is_pseudo_fixed_l + return phydev->is_pseudo_fixed_link; + } + +-/** +- * phy_write_mmd - Convenience function for writing a register +- * on an MMD on a given PHY. +- * @phydev: The phy_device struct +- * @devad: The MMD to read from +- * @regnum: The register on the MMD to read +- * @val: value to write to @regnum +- * +- * Same rules as for phy_write(); +- */ +-int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); +- + int phy_save_page(struct phy_device *phydev); + int phy_select_page(struct phy_device *phydev, int page); + int phy_restore_page(struct phy_device *phydev, int oldpage, int ret); diff --git a/target/linux/generic/backport-4.19/706-v5.1-net-phy-add-register-modifying-helpers-returning-1-o.patch b/target/linux/generic/backport-4.19/706-v5.1-net-phy-add-register-modifying-helpers-returning-1-o.patch new file mode 100644 index 0000000000..dddfcc2018 --- /dev/null +++ b/target/linux/generic/backport-4.19/706-v5.1-net-phy-add-register-modifying-helpers-returning-1-o.patch @@ -0,0 +1,217 @@ +From c1e3f753f6b85d7636024159bb78f764e09492f1 Mon Sep 17 00:00:00 2001 +From: Heiner Kallweit <hkallweit1@gmail.com> +Date: Sun, 10 Feb 2019 19:57:56 +0100 +Subject: [PATCH 604/660] net: phy: add register modifying helpers returning 1 + on change + +When modifying registers there are scenarios where we need to know +whether the register content actually changed. This patch adds +new helpers to not break users of the current ones, phy_modify() etc. + +Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy-core.c | 127 ++++++++++++++++++++++++++++++++++--- + include/linux/phy.h | 12 +++- + 2 files changed, 128 insertions(+), 11 deletions(-) + +--- a/drivers/net/phy/phy-core.c ++++ b/drivers/net/phy/phy-core.c +@@ -364,7 +364,7 @@ int phy_write_mmd(struct phy_device *phy + EXPORT_SYMBOL(phy_write_mmd); + + /** +- * __phy_modify() - Convenience function for modifying a PHY register ++ * __phy_modify_changed() - Convenience function for modifying a PHY register + * @phydev: a pointer to a &struct phy_device + * @regnum: register number + * @mask: bit mask of bits to clear +@@ -372,16 +372,69 @@ EXPORT_SYMBOL(phy_write_mmd); + * + * Unlocked helper function which allows a PHY register to be modified as + * new register value = (old register value & ~mask) | set ++ * ++ * Returns negative errno, 0 if there was no change, and 1 in case of change + */ +-int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set) ++int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, ++ u16 set) + { +- int ret; ++ int new, ret; + + ret = __phy_read(phydev, regnum); + if (ret < 0) + return ret; + +- ret = __phy_write(phydev, regnum, (ret & ~mask) | set); ++ new = (ret & ~mask) | set; ++ if (new == ret) ++ return 0; ++ ++ ret = __phy_write(phydev, regnum, new); ++ ++ return ret < 0 ? ret : 1; ++} ++EXPORT_SYMBOL_GPL(__phy_modify_changed); ++ ++/** ++ * phy_modify_changed - Function for modifying a PHY register ++ * @phydev: the phy_device struct ++ * @regnum: register number to modify ++ * @mask: bit mask of bits to clear ++ * @set: new value of bits set in mask to write to @regnum ++ * ++ * NOTE: MUST NOT be called from interrupt context, ++ * because the bus read/write functions may wait for an interrupt ++ * to conclude the operation. ++ * ++ * Returns negative errno, 0 if there was no change, and 1 in case of change ++ */ ++int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, u16 set) ++{ ++ int ret; ++ ++ mutex_lock(&phydev->mdio.bus->mdio_lock); ++ ret = __phy_modify_changed(phydev, regnum, mask, set); ++ mutex_unlock(&phydev->mdio.bus->mdio_lock); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phy_modify_changed); ++ ++/** ++ * __phy_modify - Convenience function for modifying a PHY register ++ * @phydev: the phy_device struct ++ * @regnum: register number to modify ++ * @mask: bit mask of bits to clear ++ * @set: new value of bits set in mask to write to @regnum ++ * ++ * NOTE: MUST NOT be called from interrupt context, ++ * because the bus read/write functions may wait for an interrupt ++ * to conclude the operation. ++ */ ++int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set) ++{ ++ int ret; ++ ++ ret = __phy_modify_changed(phydev, regnum, mask, set); + + return ret < 0 ? ret : 0; + } +@@ -411,7 +464,7 @@ int phy_modify(struct phy_device *phydev + EXPORT_SYMBOL_GPL(phy_modify); + + /** +- * __phy_modify_mmd - Convenience function for modifying a register on MMD ++ * __phy_modify_mmd_changed - Function for modifying a register on MMD + * @phydev: the phy_device struct + * @devad: the MMD containing register to modify + * @regnum: register number to modify +@@ -420,17 +473,73 @@ EXPORT_SYMBOL_GPL(phy_modify); + * + * Unlocked helper function which allows a MMD register to be modified as + * new register value = (old register value & ~mask) | set ++ * ++ * Returns negative errno, 0 if there was no change, and 1 in case of change + */ +-int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, +- u16 mask, u16 set) ++int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set) + { +- int ret; ++ int new, ret; + + ret = __phy_read_mmd(phydev, devad, regnum); + if (ret < 0) + return ret; + +- ret = __phy_write_mmd(phydev, devad, regnum, (ret & ~mask) | set); ++ new = (ret & ~mask) | set; ++ if (new == ret) ++ return 0; ++ ++ ret = __phy_write_mmd(phydev, devad, regnum, new); ++ ++ return ret < 0 ? ret : 1; ++} ++EXPORT_SYMBOL_GPL(__phy_modify_mmd_changed); ++ ++/** ++ * phy_modify_mmd_changed - Function for modifying a register on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @mask: bit mask of bits to clear ++ * @set: new value of bits set in mask to write to @regnum ++ * ++ * NOTE: MUST NOT be called from interrupt context, ++ * because the bus read/write functions may wait for an interrupt ++ * to conclude the operation. ++ * ++ * Returns negative errno, 0 if there was no change, and 1 in case of change ++ */ ++int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set) ++{ ++ int ret; ++ ++ mutex_lock(&phydev->mdio.bus->mdio_lock); ++ ret = __phy_modify_mmd_changed(phydev, devad, regnum, mask, set); ++ mutex_unlock(&phydev->mdio.bus->mdio_lock); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phy_modify_mmd_changed); ++ ++/** ++ * __phy_modify_mmd - Convenience function for modifying a register on MMD ++ * @phydev: the phy_device struct ++ * @devad: the MMD containing register to modify ++ * @regnum: register number to modify ++ * @mask: bit mask of bits to clear ++ * @set: new value of bits set in mask to write to @regnum ++ * ++ * NOTE: MUST NOT be called from interrupt context, ++ * because the bus read/write functions may wait for an interrupt ++ * to conclude the operation. ++ */ ++int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set) ++{ ++ int ret; ++ ++ ret = __phy_modify_mmd_changed(phydev, devad, regnum, mask, set); + + return ret < 0 ? ret : 0; + } +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -795,13 +795,21 @@ int phy_write_mmd(struct phy_device *phy + */ + int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); + ++int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, ++ u16 set); ++int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, ++ u16 set); + int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); + int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); + ++int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set); ++int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, ++ u16 mask, u16 set); + int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, +- u16 mask, u16 set); ++ u16 mask, u16 set); + int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, +- u16 mask, u16 set); ++ u16 mask, u16 set); + + /** + * __phy_set_bits - Convenience function for setting bits in a PHY register diff --git a/target/linux/generic/backport-4.19/707-v5.1-net-phy-add-genphy_c45_check_and_restart_aneg.patch b/target/linux/generic/backport-4.19/707-v5.1-net-phy-add-genphy_c45_check_and_restart_aneg.patch new file mode 100644 index 0000000000..6d47fa9634 --- /dev/null +++ b/target/linux/generic/backport-4.19/707-v5.1-net-phy-add-genphy_c45_check_and_restart_aneg.patch @@ -0,0 +1,64 @@ +From 2c3db705737cf52d7d24c993f0889b25b956c718 Mon Sep 17 00:00:00 2001 +From: Heiner Kallweit <hkallweit1@gmail.com> +Date: Mon, 18 Feb 2019 21:27:18 +0100 +Subject: [PATCH 605/660] net: phy: add genphy_c45_check_and_restart_aneg + +This function will be used by config_aneg callback implementations of +PHY drivers and allows to reduce boilerplate code. + +Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/phy-c45.c | 30 ++++++++++++++++++++++++++++++ + include/linux/phy.h | 1 + + 2 files changed, 31 insertions(+) + +--- a/drivers/net/phy/phy-c45.c ++++ b/drivers/net/phy/phy-c45.c +@@ -110,6 +110,36 @@ int genphy_c45_restart_aneg(struct phy_d + EXPORT_SYMBOL_GPL(genphy_c45_restart_aneg); + + /** ++ * genphy_c45_check_and_restart_aneg - Enable and restart auto-negotiation ++ * @phydev: target phy_device struct ++ * @restart: whether aneg restart is requested ++ * ++ * This assumes that the auto-negotiation MMD is present. ++ * ++ * Check, and restart auto-negotiation if needed. ++ */ ++int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart) ++{ ++ int ret = 0; ++ ++ if (!restart) { ++ /* Configure and restart aneg if it wasn't set before */ ++ ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1); ++ if (ret < 0) ++ return ret; ++ ++ if (!(ret & MDIO_AN_CTRL1_ENABLE)) ++ restart = true; ++ } ++ ++ if (restart) ++ ret = genphy_c45_restart_aneg(phydev); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(genphy_c45_check_and_restart_aneg); ++ ++/** + * genphy_c45_aneg_done - return auto-negotiation complete status + * @phydev: target phy_device struct + * +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -1098,6 +1098,7 @@ int genphy_write_mmd_unsupported(struct + + /* 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); + int genphy_c45_aneg_done(struct phy_device *phydev); + int genphy_c45_read_link(struct phy_device *phydev, u32 mmd_mask); + int genphy_c45_read_lpa(struct phy_device *phydev); diff --git a/target/linux/generic/backport-4.19/708-v5.3-net-phylink-remove-netdev-from-phylink-mii-ioctl-emu.patch b/target/linux/generic/backport-4.19/708-v5.3-net-phylink-remove-netdev-from-phylink-mii-ioctl-emu.patch new file mode 100644 index 0000000000..1c3f1cc01a --- /dev/null +++ b/target/linux/generic/backport-4.19/708-v5.3-net-phylink-remove-netdev-from-phylink-mii-ioctl-emu.patch @@ -0,0 +1,59 @@ +From 4c4323084e9a67210c8d269dceba1be99356c414 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 28 May 2019 10:57:18 +0100 +Subject: [PATCH 606/660] net: phylink: remove netdev from phylink mii ioctl + emulation + +The netdev used in the phylink ioctl emulation is never used, so let's +remove it. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 12 ++++-------- + 1 file changed, 4 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -1360,8 +1360,8 @@ EXPORT_SYMBOL_GPL(phylink_ethtool_set_ee + * + * FIXME: should deal with negotiation state too. + */ +-static int phylink_mii_emul_read(struct net_device *ndev, unsigned int reg, +- struct phylink_link_state *state, bool aneg) ++static int phylink_mii_emul_read(unsigned int reg, ++ struct phylink_link_state *state) + { + struct fixed_phy_status fs; + int val; +@@ -1376,8 +1376,6 @@ static int phylink_mii_emul_read(struct + if (reg == MII_BMSR) { + if (!state->an_complete) + val &= ~BMSR_ANEGCOMPLETE; +- if (!aneg) +- val &= ~BMSR_ANEGCAPABLE; + } + return val; + } +@@ -1473,8 +1471,7 @@ static int phylink_mii_read(struct phyli + case MLO_AN_FIXED: + if (phy_id == 0) { + phylink_get_fixed_state(pl, &state); +- val = phylink_mii_emul_read(pl->netdev, reg, &state, +- true); ++ val = phylink_mii_emul_read(reg, &state); + } + break; + +@@ -1487,8 +1484,7 @@ static int phylink_mii_read(struct phyli + if (val < 0) + return val; + +- val = phylink_mii_emul_read(pl->netdev, reg, &state, +- true); ++ val = phylink_mii_emul_read(reg, &state); + } + break; + } diff --git a/target/linux/generic/backport-4.19/709-v5.3-net-phylink-support-for-link-gpio-interrupt.patch b/target/linux/generic/backport-4.19/709-v5.3-net-phylink-support-for-link-gpio-interrupt.patch new file mode 100644 index 0000000000..84a1c853d1 --- /dev/null +++ b/target/linux/generic/backport-4.19/709-v5.3-net-phylink-support-for-link-gpio-interrupt.patch @@ -0,0 +1,90 @@ +From cba0aba37d2228556e0d1f776d403435868cdbfa Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 28 May 2019 10:57:23 +0100 +Subject: [PATCH 607/660] net: phylink: support for link gpio interrupt + +Add support for using GPIO interrupts with a fixed-link GPIO rather than +polling the GPIO every second and invoking the phylink resolution. This +avoids unnecessary calls to mac_config(). + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 36 ++++++++++++++++++++++++++++++++---- + 1 file changed, 32 insertions(+), 4 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -59,6 +59,7 @@ struct phylink { + phy_interface_t cur_interface; + + struct gpio_desc *link_gpio; ++ unsigned int link_irq; + struct timer_list link_poll; + void (*get_fixed_state)(struct net_device *dev, + struct phylink_link_state *s); +@@ -645,7 +646,7 @@ void phylink_destroy(struct phylink *pl) + { + if (pl->sfp_bus) + sfp_unregister_upstream(pl->sfp_bus); +- if (!IS_ERR_OR_NULL(pl->link_gpio)) ++ if (pl->link_gpio) + gpiod_put(pl->link_gpio); + + cancel_work_sync(&pl->resolve); +@@ -912,6 +913,15 @@ void phylink_mac_change(struct phylink * + } + EXPORT_SYMBOL_GPL(phylink_mac_change); + ++static irqreturn_t phylink_link_handler(int irq, void *data) ++{ ++ struct phylink *pl = data; ++ ++ phylink_run_resolve(pl); ++ ++ return IRQ_HANDLED; ++} ++ + /** + * phylink_start() - start a phylink instance + * @pl: a pointer to a &struct phylink returned from phylink_create() +@@ -947,7 +957,22 @@ void phylink_start(struct phylink *pl) + clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); + phylink_run_resolve(pl); + +- if (pl->link_an_mode == MLO_AN_FIXED && !IS_ERR(pl->link_gpio)) ++ if (pl->link_an_mode == MLO_AN_FIXED && pl->link_gpio) { ++ int irq = gpiod_to_irq(pl->link_gpio); ++ ++ if (irq > 0) { ++ if (!request_irq(irq, phylink_link_handler, ++ IRQF_TRIGGER_RISING | ++ IRQF_TRIGGER_FALLING, ++ "netdev link", pl)) ++ pl->link_irq = irq; ++ else ++ irq = 0; ++ } ++ if (irq <= 0) ++ mod_timer(&pl->link_poll, jiffies + HZ); ++ } ++ if (pl->link_an_mode == MLO_AN_FIXED && pl->get_fixed_state) + mod_timer(&pl->link_poll, jiffies + HZ); + if (pl->sfp_bus) + sfp_upstream_start(pl->sfp_bus); +@@ -973,8 +998,11 @@ void phylink_stop(struct phylink *pl) + phy_stop(pl->phydev); + if (pl->sfp_bus) + sfp_upstream_stop(pl->sfp_bus); +- if (pl->link_an_mode == MLO_AN_FIXED && !IS_ERR(pl->link_gpio)) +- del_timer_sync(&pl->link_poll); ++ del_timer_sync(&pl->link_poll); ++ if (pl->link_irq) { ++ free_irq(pl->link_irq, pl); ++ pl->link_irq = 0; ++ } + + phylink_run_resolve_and_disable(pl, PHYLINK_DISABLE_STOPPED); + } diff --git a/target/linux/generic/backport-4.19/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch b/target/linux/generic/backport-4.19/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch new file mode 100644 index 0000000000..3a601c65b0 --- /dev/null +++ b/target/linux/generic/backport-4.19/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch @@ -0,0 +1,77 @@ +From eb5df3d026824832831376bbdf04e01a52776eea Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 28 May 2019 10:57:29 +0100 +Subject: [PATCH 608/660] net: phy: allow Clause 45 access via mii ioctl + +Allow userspace to generate Clause 45 MII access cycles via phylib. +This is useful for tools such as mii-diag to be able to inspect Clause +45 PHYs. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy.c | 33 ++++++++++++++++++++++++--------- + 1 file changed, 24 insertions(+), 9 deletions(-) + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -397,6 +397,7 @@ int phy_mii_ioctl(struct phy_device *phy + struct mii_ioctl_data *mii_data = if_mii(ifr); + u16 val = mii_data->val_in; + bool change_autoneg = false; ++ int prtad, devad; + + switch (cmd) { + case SIOCGMIIPHY: +@@ -404,14 +405,29 @@ int phy_mii_ioctl(struct phy_device *phy + /* fall through */ + + case SIOCGMIIREG: +- mii_data->val_out = mdiobus_read(phydev->mdio.bus, +- mii_data->phy_id, +- mii_data->reg_num); ++ if (mdio_phy_id_is_c45(mii_data->phy_id)) { ++ prtad = mdio_phy_id_prtad(mii_data->phy_id); ++ devad = mdio_phy_id_devad(mii_data->phy_id); ++ devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num; ++ } else { ++ prtad = mii_data->phy_id; ++ devad = mii_data->reg_num; ++ } ++ mii_data->val_out = mdiobus_read(phydev->mdio.bus, prtad, ++ devad); + return 0; + + case SIOCSMIIREG: +- if (mii_data->phy_id == phydev->mdio.addr) { +- switch (mii_data->reg_num) { ++ if (mdio_phy_id_is_c45(mii_data->phy_id)) { ++ prtad = mdio_phy_id_prtad(mii_data->phy_id); ++ devad = mdio_phy_id_devad(mii_data->phy_id); ++ devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num; ++ } else { ++ prtad = mii_data->phy_id; ++ devad = mii_data->reg_num; ++ } ++ if (prtad == phydev->mdio.addr) { ++ switch (devad) { + case MII_BMCR: + if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { + if (phydev->autoneg == AUTONEG_ENABLE) +@@ -443,11 +459,10 @@ int phy_mii_ioctl(struct phy_device *phy + } + } + +- mdiobus_write(phydev->mdio.bus, mii_data->phy_id, +- mii_data->reg_num, val); ++ mdiobus_write(phydev->mdio.bus, prtad, devad, val); + +- if (mii_data->phy_id == phydev->mdio.addr && +- mii_data->reg_num == MII_BMCR && ++ if (prtad == phydev->mdio.addr && ++ devad == MII_BMCR && + val & BMCR_RESET) + return phy_init_hw(phydev); + diff --git a/target/linux/generic/backport-4.19/711-v5.3-net-sfp-add-mandatory-attach-detach-methods-for-sfp-.patch b/target/linux/generic/backport-4.19/711-v5.3-net-sfp-add-mandatory-attach-detach-methods-for-sfp-.patch new file mode 100644 index 0000000000..74dc39fa7f --- /dev/null +++ b/target/linux/generic/backport-4.19/711-v5.3-net-sfp-add-mandatory-attach-detach-methods-for-sfp-.patch @@ -0,0 +1,94 @@ +From aeabfaa63285470e81fa341e14f92d68880aa160 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 28 May 2019 10:57:34 +0100 +Subject: [PATCH 609/660] net: sfp: add mandatory attach/detach methods for sfp + buses + +Add attach and detach methods for SFP buses, which will allow us to get +rid of the netdev storage in sfp-bus. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 16 ++++++++++++++++ + drivers/net/phy/sfp-bus.c | 4 ++-- + include/linux/sfp.h | 6 ++++++ + 3 files changed, 24 insertions(+), 2 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -1615,6 +1615,20 @@ int phylink_mii_ioctl(struct phylink *pl + } + EXPORT_SYMBOL_GPL(phylink_mii_ioctl); + ++static void phylink_sfp_attach(void *upstream, struct sfp_bus *bus) ++{ ++ struct phylink *pl = upstream; ++ ++ pl->netdev->sfp_bus = bus; ++} ++ ++static void phylink_sfp_detach(void *upstream, struct sfp_bus *bus) ++{ ++ struct phylink *pl = upstream; ++ ++ pl->netdev->sfp_bus = NULL; ++} ++ + static int phylink_sfp_module_insert(void *upstream, + const struct sfp_eeprom_id *id) + { +@@ -1733,6 +1747,8 @@ static void phylink_sfp_disconnect_phy(v + } + + static const struct sfp_upstream_ops sfp_phylink_ops = { ++ .attach = phylink_sfp_attach, ++ .detach = phylink_sfp_detach, + .module_insert = phylink_sfp_module_insert, + .link_up = phylink_sfp_link_up, + .link_down = phylink_sfp_link_down, +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -350,7 +350,7 @@ static int sfp_register_bus(struct sfp_b + bus->socket_ops->attach(bus->sfp); + if (bus->started) + bus->socket_ops->start(bus->sfp); +- bus->netdev->sfp_bus = bus; ++ bus->upstream_ops->attach(bus->upstream, bus); + bus->registered = true; + return 0; + } +@@ -359,8 +359,8 @@ static void sfp_unregister_bus(struct sf + { + const struct sfp_upstream_ops *ops = bus->upstream_ops; + +- bus->netdev->sfp_bus = NULL; + if (bus->registered) { ++ bus->upstream_ops->detach(bus->upstream, bus); + if (bus->started) + bus->socket_ops->stop(bus->sfp); + bus->socket_ops->detach(bus->sfp); +--- a/include/linux/sfp.h ++++ b/include/linux/sfp.h +@@ -469,6 +469,10 @@ struct sfp_bus; + + /** + * struct sfp_upstream_ops - upstream operations structure ++ * @attach: called when the sfp socket driver is bound to the upstream ++ * (mandatory). ++ * @detach: called when the sfp socket driver is unbound from the upstream ++ * (mandatory). + * @module_insert: called after a module has been detected to determine + * whether the module is supported for the upstream device. + * @module_remove: called after the module has been removed. +@@ -481,6 +485,8 @@ struct sfp_bus; + * been removed. + */ + struct sfp_upstream_ops { ++ void (*attach)(void *priv, struct sfp_bus *bus); ++ void (*detach)(void *priv, struct sfp_bus *bus); + int (*module_insert)(void *priv, const struct sfp_eeprom_id *id); + void (*module_remove)(void *priv); + void (*link_down)(void *priv); diff --git a/target/linux/generic/backport-4.19/712-v5.3-net-sfp-remove-sfp-bus-use-of-netdevs.patch b/target/linux/generic/backport-4.19/712-v5.3-net-sfp-remove-sfp-bus-use-of-netdevs.patch new file mode 100644 index 0000000000..8f0c37e092 --- /dev/null +++ b/target/linux/generic/backport-4.19/712-v5.3-net-sfp-remove-sfp-bus-use-of-netdevs.patch @@ -0,0 +1,118 @@ +From 60d756717d772be90d07a07cd2cc140c76da3e4a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 28 May 2019 10:57:39 +0100 +Subject: [PATCH 610/660] net: sfp: remove sfp-bus use of netdevs + +The sfp-bus code now no longer has any use for the network device +structure, so remove its use. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 3 +-- + drivers/net/phy/sfp-bus.c | 10 +++------- + include/linux/sfp.h | 6 ++---- + 3 files changed, 6 insertions(+), 13 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -555,8 +555,7 @@ static int phylink_register_sfp(struct p + return ret; + } + +- pl->sfp_bus = sfp_register_upstream(ref.fwnode, pl->netdev, pl, +- &sfp_phylink_ops); ++ pl->sfp_bus = sfp_register_upstream(ref.fwnode, pl, &sfp_phylink_ops); + if (!pl->sfp_bus) + return -ENOMEM; + +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -23,7 +23,6 @@ struct sfp_bus { + + const struct sfp_upstream_ops *upstream_ops; + void *upstream; +- struct net_device *netdev; + struct phy_device *phydev; + + bool registered; +@@ -442,13 +441,11 @@ static void sfp_upstream_clear(struct sf + { + bus->upstream_ops = NULL; + bus->upstream = NULL; +- bus->netdev = NULL; + } + + /** + * sfp_register_upstream() - Register the neighbouring device + * @fwnode: firmware node for the SFP bus +- * @ndev: network device associated with the interface + * @upstream: the upstream private data + * @ops: the upstream's &struct sfp_upstream_ops + * +@@ -459,7 +456,7 @@ static void sfp_upstream_clear(struct sf + * On error, returns %NULL. + */ + struct sfp_bus *sfp_register_upstream(struct fwnode_handle *fwnode, +- struct net_device *ndev, void *upstream, ++ void *upstream, + const struct sfp_upstream_ops *ops) + { + struct sfp_bus *bus = sfp_bus_get(fwnode); +@@ -469,7 +466,6 @@ struct sfp_bus *sfp_register_upstream(st + rtnl_lock(); + bus->upstream_ops = ops; + bus->upstream = upstream; +- bus->netdev = ndev; + + if (bus->sfp) { + ret = sfp_register_bus(bus); +@@ -591,7 +587,7 @@ struct sfp_bus *sfp_register_socket(stru + bus->sfp = sfp; + bus->socket_ops = ops; + +- if (bus->netdev) { ++ if (bus->upstream_ops) { + ret = sfp_register_bus(bus); + if (ret) + sfp_socket_clear(bus); +@@ -611,7 +607,7 @@ EXPORT_SYMBOL_GPL(sfp_register_socket); + void sfp_unregister_socket(struct sfp_bus *bus) + { + rtnl_lock(); +- if (bus->netdev) ++ if (bus->upstream_ops) + sfp_unregister_bus(bus); + sfp_socket_clear(bus); + rtnl_unlock(); +--- a/include/linux/sfp.h ++++ b/include/linux/sfp.h +@@ -464,7 +464,6 @@ enum { + struct fwnode_handle; + struct ethtool_eeprom; + struct ethtool_modinfo; +-struct net_device; + struct sfp_bus; + + /** +@@ -510,7 +509,7 @@ int sfp_get_module_eeprom(struct sfp_bus + void sfp_upstream_start(struct sfp_bus *bus); + void sfp_upstream_stop(struct sfp_bus *bus); + struct sfp_bus *sfp_register_upstream(struct fwnode_handle *fwnode, +- struct net_device *ndev, void *upstream, ++ void *upstream, + const struct sfp_upstream_ops *ops); + void sfp_unregister_upstream(struct sfp_bus *bus); + #else +@@ -555,8 +554,7 @@ static inline void sfp_upstream_stop(str + } + + static inline struct sfp_bus *sfp_register_upstream( +- struct fwnode_handle *fwnode, +- struct net_device *ndev, void *upstream, ++ struct fwnode_handle *fwnode, void *upstream, + const struct sfp_upstream_ops *ops) + { + return (struct sfp_bus *)-1; diff --git a/target/linux/generic/backport-4.19/713-v5.2-net-phylink-avoid-reducing-support-mask.patch b/target/linux/generic/backport-4.19/713-v5.2-net-phylink-avoid-reducing-support-mask.patch new file mode 100644 index 0000000000..3aa8d9e571 --- /dev/null +++ b/target/linux/generic/backport-4.19/713-v5.2-net-phylink-avoid-reducing-support-mask.patch @@ -0,0 +1,84 @@ +From 8ac1d3e5cf7d277769ba3403d99f643fab1e3fae Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Sat, 23 Nov 2019 14:19:54 +0000 +Subject: [PATCH 611/660] net: phylink: avoid reducing support mask + +Avoid reducing the support mask as a result of the interface type +selected for SFP modules, or when setting the link settings through +ethtool - this should only change when the supported link modes of +the hardware combination change. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/phylink.c | 13 +++++++++---- + 1 file changed, 9 insertions(+), 4 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -1137,6 +1137,7 @@ EXPORT_SYMBOL_GPL(phylink_ethtool_ksetti + int phylink_ethtool_ksettings_set(struct phylink *pl, + const struct ethtool_link_ksettings *kset) + { ++ __ETHTOOL_DECLARE_LINK_MODE_MASK(support); + struct ethtool_link_ksettings our_kset; + struct phylink_link_state config; + int ret; +@@ -1147,11 +1148,12 @@ int phylink_ethtool_ksettings_set(struct + kset->base.autoneg != AUTONEG_ENABLE) + return -EINVAL; + ++ linkmode_copy(support, pl->supported); + config = pl->link_config; + + /* Mask out unsupported advertisements */ + linkmode_and(config.advertising, kset->link_modes.advertising, +- pl->supported); ++ support); + + /* FIXME: should we reject autoneg if phy/mac does not support it? */ + if (kset->base.autoneg == AUTONEG_DISABLE) { +@@ -1161,7 +1163,7 @@ int phylink_ethtool_ksettings_set(struct + * duplex. + */ + s = phy_lookup_setting(kset->base.speed, kset->base.duplex, +- pl->supported, ++ support, + __ETHTOOL_LINK_MODE_MASK_NBITS, false); + if (!s) + return -EINVAL; +@@ -1191,7 +1193,7 @@ int phylink_ethtool_ksettings_set(struct + __set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising); + } + +- if (phylink_validate(pl, pl->supported, &config)) ++ if (phylink_validate(pl, support, &config)) + return -EINVAL; + + /* If autonegotiation is enabled, we must have an advertisement */ +@@ -1633,6 +1635,7 @@ static int phylink_sfp_module_insert(voi + { + struct phylink *pl = upstream; + __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, }; ++ __ETHTOOL_DECLARE_LINK_MODE_MASK(support1); + struct phylink_link_state config; + phy_interface_t iface; + int ret = 0; +@@ -1660,6 +1663,8 @@ static int phylink_sfp_module_insert(voi + return ret; + } + ++ linkmode_copy(support1, support); ++ + iface = sfp_select_interface(pl->sfp_bus, id, config.advertising); + if (iface == PHY_INTERFACE_MODE_NA) { + netdev_err(pl->netdev, +@@ -1669,7 +1674,7 @@ static int phylink_sfp_module_insert(voi + } + + config.interface = iface; +- ret = phylink_validate(pl, support, &config); ++ ret = phylink_validate(pl, support1, &config); + if (ret) { + netdev_err(pl->netdev, "validation of %s/%s with support %*pb failed: %d\n", + phylink_an_mode_str(MLO_AN_INBAND), diff --git a/target/linux/generic/backport-4.19/714-v5.3-net-sfp-Stop-SFP-polling-and-interrupt-handling-duri.patch b/target/linux/generic/backport-4.19/714-v5.3-net-sfp-Stop-SFP-polling-and-interrupt-handling-duri.patch new file mode 100644 index 0000000000..0509950296 --- /dev/null +++ b/target/linux/generic/backport-4.19/714-v5.3-net-sfp-Stop-SFP-polling-and-interrupt-handling-duri.patch @@ -0,0 +1,94 @@ +From 254236a22109efa84c9e9f5a9c76a1719439e309 Mon Sep 17 00:00:00 2001 +From: Robert Hancock <hancock@sedsystems.ca> +Date: Fri, 7 Jun 2019 10:42:35 -0600 +Subject: [PATCH 612/660] net: sfp: Stop SFP polling and interrupt handling + during shutdown + +SFP device polling can cause problems during the shutdown process if the +parent devices of the network controller have been shut down already. +This problem was seen on the iMX6 platform with PCIe devices, where +accessing the device after the bus is shut down causes a hang. + +Free any acquired GPIO interrupts and stop all delayed work in the SFP +driver during the shutdown process, so that we ensure that no pending +operations are still occurring after the SFP shutdown completes. + +Signed-off-by: Robert Hancock <hancock@sedsystems.ca> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/sfp.c | 31 ++++++++++++++++++++++++++----- + 1 file changed, 26 insertions(+), 5 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -183,6 +183,7 @@ struct sfp { + int (*write)(struct sfp *, bool, u8, void *, size_t); + + struct gpio_desc *gpio[GPIO_MAX]; ++ int gpio_irq[GPIO_MAX]; + + bool attached; + struct mutex st_mutex; /* Protects state */ +@@ -1803,7 +1804,7 @@ static int sfp_probe(struct platform_dev + const struct sff_data *sff; + struct sfp *sfp; + bool poll = false; +- int irq, err, i; ++ int err, i; + + sfp = sfp_alloc(&pdev->dev); + if (IS_ERR(sfp)) +@@ -1885,19 +1886,22 @@ static int sfp_probe(struct platform_dev + if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i]) + continue; + +- irq = gpiod_to_irq(sfp->gpio[i]); +- if (!irq) { ++ sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]); ++ if (!sfp->gpio_irq[i]) { + poll = true; + continue; + } + +- err = devm_request_threaded_irq(sfp->dev, irq, NULL, sfp_irq, ++ err = devm_request_threaded_irq(sfp->dev, sfp->gpio_irq[i], ++ NULL, sfp_irq, + IRQF_ONESHOT | + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING, + dev_name(sfp->dev), sfp); +- if (err) ++ if (err) { ++ sfp->gpio_irq[i] = 0; + poll = true; ++ } + } + + if (poll) +@@ -1928,9 +1932,26 @@ static int sfp_remove(struct platform_de + return 0; + } + ++static void sfp_shutdown(struct platform_device *pdev) ++{ ++ struct sfp *sfp = platform_get_drvdata(pdev); ++ int i; ++ ++ for (i = 0; i < GPIO_MAX; i++) { ++ if (!sfp->gpio_irq[i]) ++ continue; ++ ++ devm_free_irq(sfp->dev, sfp->gpio_irq[i], sfp); ++ } ++ ++ cancel_delayed_work_sync(&sfp->poll); ++ cancel_delayed_work_sync(&sfp->timeout); ++} ++ + static struct platform_driver sfp_driver = { + .probe = sfp_probe, + .remove = sfp_remove, ++ .shutdown = sfp_shutdown, + .driver = { + .name = "sfp", + .of_match_table = sfp_of_match, diff --git a/target/linux/generic/backport-4.19/715-v5.3-net-phylink-don-t-start-and-stop-SGMII-PHYs-in-SFP-m.patch b/target/linux/generic/backport-4.19/715-v5.3-net-phylink-don-t-start-and-stop-SGMII-PHYs-in-SFP-m.patch new file mode 100644 index 0000000000..94fb2fb3e4 --- /dev/null +++ b/target/linux/generic/backport-4.19/715-v5.3-net-phylink-don-t-start-and-stop-SGMII-PHYs-in-SFP-m.patch @@ -0,0 +1,141 @@ +From b8803113537a1c1f457eba6270d46e3af305031f Mon Sep 17 00:00:00 2001 +From: Arseny Solokha <asolokha@kb.kras.ru> +Date: Wed, 24 Jul 2019 20:31:39 +0700 +Subject: [PATCH 613/660] net: phylink: don't start and stop SGMII PHYs in SFP + modules twice + +SFP modules connected using the SGMII interface have their own PHYs which +are handled by the struct phylink's phydev field. On the other hand, for +the modules connected using 1000Base-X interface that field is not set. + +Since commit ce0aa27ff3f6 ("sfp: add sfp-bus to bridge between network +devices and sfp cages") phylink_start() ends up setting the phydev field +using the sfp-bus infrastructure, which eventually calls phy_start() on it, +and then calling phy_start() again on the same phydev from phylink_start() +itself. Similar call sequence holds for phylink_stop(), only in the reverse +order. This results in WARNs during network interface bringup and shutdown +when a copper SFP module is connected, as phy_start() and phy_stop() are +called twice in a row for the same phy_device: + + % ip link set up dev eth0 + ------------[ cut here ]------------ + called from state UP + WARNING: CPU: 1 PID: 155 at drivers/net/phy/phy.c:895 phy_start+0x74/0xc0 + Modules linked in: + CPU: 1 PID: 155 Comm: backend Not tainted 5.2.0+ #1 + NIP: c0227bf0 LR: c0227bf0 CTR: c004d224 + REGS: df547720 TRAP: 0700 Not tainted (5.2.0+) + MSR: 00029000 <CE,EE,ME> CR: 24002822 XER: 00000000 + + GPR00: c0227bf0 df5477d8 df5d7080 00000014 df9d2370 df9d5ac4 1f4eb000 00000001 + GPR08: c061fe58 00000000 00000000 df5477d8 0000003c 100c8768 00000000 00000000 + GPR16: df486a00 c046f1c8 c046eea0 00000000 c046e904 c0239604 db68449c 00000000 + GPR24: e9083204 00000000 00000001 db684460 e9083404 00000000 db6dce00 db6dcc00 + NIP [c0227bf0] phy_start+0x74/0xc0 + LR [c0227bf0] phy_start+0x74/0xc0 + Call Trace: + [df5477d8] [c0227bf0] phy_start+0x74/0xc0 (unreliable) + [df5477e8] [c023cad0] startup_gfar+0x398/0x3f4 + [df547828] [c023cf08] gfar_enet_open+0x364/0x374 + [df547898] [c029d870] __dev_open+0xe4/0x140 + [df5478c8] [c029db70] __dev_change_flags+0xf0/0x188 + [df5478f8] [c029dc28] dev_change_flags+0x20/0x54 + [df547918] [c02ae304] do_setlink+0x310/0x818 + [df547a08] [c02b1eb8] __rtnl_newlink+0x384/0x6b0 + [df547c28] [c02b222c] rtnl_newlink+0x48/0x68 + [df547c48] [c02ad7c8] rtnetlink_rcv_msg+0x240/0x27c + [df547c98] [c02cc068] netlink_rcv_skb+0x8c/0xf0 + [df547cd8] [c02cba3c] netlink_unicast+0x114/0x19c + [df547d08] [c02cbd74] netlink_sendmsg+0x2b0/0x2c0 + [df547d58] [c027b668] sock_sendmsg_nosec+0x20/0x40 + [df547d68] [c027d080] ___sys_sendmsg+0x17c/0x1dc + [df547e98] [c027df7c] __sys_sendmsg+0x68/0x84 + [df547ef8] [c027e430] sys_socketcall+0x1a0/0x204 + [df547f38] [c000d1d8] ret_from_syscall+0x0/0x38 + --- interrupt: c01 at 0xfd4e030 + LR = 0xfd4e010 + Instruction dump: + 813f0188 38800000 2b890005 419d0014 3d40c046 5529103a 394aa208 7c8a482e + 3c60c046 3863a1b8 4cc63182 4be009a1 <0fe00000> 48000030 3c60c046 3863a1d0 + ---[ end trace d4c095aeaf6ea998 ]--- + +and + + % ip link set down dev eth0 + ------------[ cut here ]------------ + called from state HALTED + WARNING: CPU: 1 PID: 184 at drivers/net/phy/phy.c:858 phy_stop+0x3c/0x88 + + <...> + + Call Trace: + [df581788] [c0228450] phy_stop+0x3c/0x88 (unreliable) + [df581798] [c022d548] sfp_sm_phy_detach+0x1c/0x44 + [df5817a8] [c022e8cc] sfp_sm_event+0x4b0/0x87c + [df581848] [c022f04c] sfp_upstream_stop+0x34/0x44 + [df581858] [c0225608] phylink_stop+0x7c/0xe4 + [df581868] [c023c57c] stop_gfar+0x7c/0x94 + [df581888] [c023c5b8] gfar_close+0x24/0x94 + [df5818a8] [c0298688] __dev_close_many+0xdc/0xf8 + [df5818c8] [c029db58] __dev_change_flags+0xd8/0x188 + [df5818f8] [c029dc28] dev_change_flags+0x20/0x54 + [df581918] [c02ae304] do_setlink+0x310/0x818 + [df581a08] [c02b1eb8] __rtnl_newlink+0x384/0x6b0 + [df581c28] [c02b222c] rtnl_newlink+0x48/0x68 + [df581c48] [c02ad7c8] rtnetlink_rcv_msg+0x240/0x27c + [df581c98] [c02cc068] netlink_rcv_skb+0x8c/0xf0 + [df581cd8] [c02cba3c] netlink_unicast+0x114/0x19c + [df581d08] [c02cbd74] netlink_sendmsg+0x2b0/0x2c0 + [df581d58] [c027b668] sock_sendmsg_nosec+0x20/0x40 + [df581d68] [c027d080] ___sys_sendmsg+0x17c/0x1dc + [df581e98] [c027df7c] __sys_sendmsg+0x68/0x84 + [df581ef8] [c027e430] sys_socketcall+0x1a0/0x204 + [df581f38] [c000d1d8] ret_from_syscall+0x0/0x38 + + <...> + + ---[ end trace d4c095aeaf6ea999 ]--- + +SFP modules with the 1000Base-X interface are not affected. + +Place explicit calls to phy_start() and phy_stop() before enabling or after +disabling an attached SFP module, where phydev is not yet set (or is +already unset), so they will be made only from the inside of sfp-bus, if +needed. + +Fixes: 217962615662 ("net: phy: warn if phy_start is called from invalid state") +Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru> +Acked-by: Russell King <rmk+kernel@armlinux.org.uk> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/phylink.c | 8 ++++---- + 1 file changed, 4 insertions(+), 4 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -973,10 +973,10 @@ void phylink_start(struct phylink *pl) + } + if (pl->link_an_mode == MLO_AN_FIXED && pl->get_fixed_state) + mod_timer(&pl->link_poll, jiffies + HZ); +- if (pl->sfp_bus) +- sfp_upstream_start(pl->sfp_bus); + if (pl->phydev) + phy_start(pl->phydev); ++ if (pl->sfp_bus) ++ sfp_upstream_start(pl->sfp_bus); + } + EXPORT_SYMBOL_GPL(phylink_start); + +@@ -993,10 +993,10 @@ void phylink_stop(struct phylink *pl) + { + ASSERT_RTNL(); + +- if (pl->phydev) +- phy_stop(pl->phydev); + if (pl->sfp_bus) + sfp_upstream_stop(pl->sfp_bus); ++ if (pl->phydev) ++ phy_stop(pl->phydev); + del_timer_sync(&pl->link_poll); + if (pl->link_irq) { + free_irq(pl->link_irq, pl); diff --git a/target/linux/generic/backport-4.19/716-v5.4-net-sfp-move-fwnode-parsing-into-sfp-bus-layer.patch b/target/linux/generic/backport-4.19/716-v5.4-net-sfp-move-fwnode-parsing-into-sfp-bus-layer.patch new file mode 100644 index 0000000000..27ab78f3ee --- /dev/null +++ b/target/linux/generic/backport-4.19/716-v5.4-net-sfp-move-fwnode-parsing-into-sfp-bus-layer.patch @@ -0,0 +1,179 @@ +From 4054955f0da08c81d42220cb445820d474f1ac92 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Sat, 14 Sep 2019 14:21:22 +0100 +Subject: [PATCH 614/660] net: sfp: move fwnode parsing into sfp-bus layer + +Rather than parsing the sfp firmware node in phylink, parse it in the +sfp-bus code, so we can re-use this code for PHYs without having to +duplicate the parsing. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 21 ++++--------- + drivers/net/phy/sfp-bus.c | 65 +++++++++++++++++++++++++-------------- + include/linux/sfp.h | 10 +++--- + 3 files changed, 53 insertions(+), 43 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -538,26 +538,17 @@ static const struct sfp_upstream_ops sfp + static int phylink_register_sfp(struct phylink *pl, + struct fwnode_handle *fwnode) + { +- struct fwnode_reference_args ref; ++ struct sfp_bus *bus; + int ret; + +- if (!fwnode) +- return 0; +- +- ret = fwnode_property_get_reference_args(fwnode, "sfp", NULL, +- 0, 0, &ref); +- if (ret < 0) { +- if (ret == -ENOENT) +- return 0; +- +- netdev_err(pl->netdev, "unable to parse \"sfp\" node: %d\n", +- ret); ++ bus = sfp_register_upstream_node(fwnode, pl, &sfp_phylink_ops); ++ if (IS_ERR(bus)) { ++ ret = PTR_ERR(bus); ++ netdev_err(pl->netdev, "unable to attach SFP bus: %d\n", ret); + return ret; + } + +- pl->sfp_bus = sfp_register_upstream(ref.fwnode, pl, &sfp_phylink_ops); +- if (!pl->sfp_bus) +- return -ENOMEM; ++ pl->sfp_bus = bus; + + return 0; + } +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -3,6 +3,7 @@ + #include <linux/list.h> + #include <linux/mutex.h> + #include <linux/phylink.h> ++#include <linux/property.h> + #include <linux/rtnetlink.h> + #include <linux/slab.h> + +@@ -444,45 +445,63 @@ static void sfp_upstream_clear(struct sf + } + + /** +- * sfp_register_upstream() - Register the neighbouring device +- * @fwnode: firmware node for the SFP bus ++ * sfp_register_upstream_node() - parse and register the neighbouring device ++ * @fwnode: firmware node for the parent device (MAC or PHY) + * @upstream: the upstream private data + * @ops: the upstream's &struct sfp_upstream_ops + * +- * Register the upstream device (eg, PHY) with the SFP bus. MAC drivers +- * should use phylink, which will call this function for them. Returns +- * a pointer to the allocated &struct sfp_bus. ++ * Parse the parent device's firmware node for a SFP bus, and register the ++ * SFP bus using sfp_register_upstream(). + * +- * On error, returns %NULL. ++ * Returns: on success, a pointer to the sfp_bus structure, ++ * %NULL if no SFP is specified, ++ * on failure, an error pointer value: ++ * corresponding to the errors detailed for ++ * fwnode_property_get_reference_args(). ++ * %-ENOMEM if we failed to allocate the bus. ++ * an error from the upstream's connect_phy() method. + */ +-struct sfp_bus *sfp_register_upstream(struct fwnode_handle *fwnode, +- void *upstream, +- const struct sfp_upstream_ops *ops) +-{ +- struct sfp_bus *bus = sfp_bus_get(fwnode); +- int ret = 0; +- +- if (bus) { +- rtnl_lock(); +- bus->upstream_ops = ops; +- bus->upstream = upstream; ++struct sfp_bus *sfp_register_upstream_node(struct fwnode_handle *fwnode, ++ void *upstream, ++ const struct sfp_upstream_ops *ops) ++{ ++ struct fwnode_reference_args ref; ++ struct sfp_bus *bus; ++ int ret; + +- if (bus->sfp) { +- ret = sfp_register_bus(bus); +- if (ret) +- sfp_upstream_clear(bus); +- } +- rtnl_unlock(); ++ ret = fwnode_property_get_reference_args(fwnode, "sfp", NULL, ++ 0, 0, &ref); ++ if (ret == -ENOENT) ++ return NULL; ++ else if (ret < 0) ++ return ERR_PTR(ret); ++ ++ bus = sfp_bus_get(ref.fwnode); ++ fwnode_handle_put(ref.fwnode); ++ if (!bus) ++ return ERR_PTR(-ENOMEM); ++ ++ rtnl_lock(); ++ bus->upstream_ops = ops; ++ bus->upstream = upstream; ++ ++ if (bus->sfp) { ++ ret = sfp_register_bus(bus); ++ if (ret) ++ sfp_upstream_clear(bus); ++ } else { ++ ret = 0; + } ++ rtnl_unlock(); + + if (ret) { + sfp_bus_put(bus); +- bus = NULL; ++ bus = ERR_PTR(ret); + } + + return bus; + } +-EXPORT_SYMBOL_GPL(sfp_register_upstream); ++EXPORT_SYMBOL_GPL(sfp_register_upstream_node); + + /** + * sfp_unregister_upstream() - Unregister sfp bus +--- a/include/linux/sfp.h ++++ b/include/linux/sfp.h +@@ -508,9 +508,9 @@ int sfp_get_module_eeprom(struct sfp_bus + u8 *data); + void sfp_upstream_start(struct sfp_bus *bus); + void sfp_upstream_stop(struct sfp_bus *bus); +-struct sfp_bus *sfp_register_upstream(struct fwnode_handle *fwnode, +- void *upstream, +- const struct sfp_upstream_ops *ops); ++struct sfp_bus *sfp_register_upstream_node(struct fwnode_handle *fwnode, ++ void *upstream, ++ const struct sfp_upstream_ops *ops); + void sfp_unregister_upstream(struct sfp_bus *bus); + #else + static inline int sfp_parse_port(struct sfp_bus *bus, +@@ -553,11 +553,11 @@ static inline void sfp_upstream_stop(str + { + } + +-static inline struct sfp_bus *sfp_register_upstream( ++static inline struct sfp_bus *sfp_register_upstream_node( + struct fwnode_handle *fwnode, void *upstream, + const struct sfp_upstream_ops *ops) + { +- return (struct sfp_bus *)-1; ++ return NULL; + } + + static inline void sfp_unregister_upstream(struct sfp_bus *bus) diff --git a/target/linux/generic/backport-4.19/717-v5.5-net-sfp-rework-upstream-interface.patch b/target/linux/generic/backport-4.19/717-v5.5-net-sfp-rework-upstream-interface.patch new file mode 100644 index 0000000000..f7dd187c16 --- /dev/null +++ b/target/linux/generic/backport-4.19/717-v5.5-net-sfp-rework-upstream-interface.patch @@ -0,0 +1,254 @@ +From 863b5b6941f9f43b924393b6ba2b36647e7dee42 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Thu, 7 Nov 2019 17:06:08 +0000 +Subject: [PATCH 615/660] net: sfp: rework upstream interface + +The current upstream interface is an all-or-nothing, which is +sub-optimal for future changes, as it doesn't allow the upstream driver +to prepare for the SFP module becoming available, as it is at boot. + +Switch to a find-sfp-bus, add-upstream, del-upstream, put-sfp-bus +interface structure instead, which allows the upstream driver to +prepare for a module being available as soon as add-upstream is called. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 10 +++-- + drivers/net/phy/sfp-bus.c | 92 +++++++++++++++++++++++++++------------ + include/linux/sfp.h | 25 +++++++---- + 3 files changed, 88 insertions(+), 39 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -541,7 +541,7 @@ static int phylink_register_sfp(struct p + struct sfp_bus *bus; + int ret; + +- bus = sfp_register_upstream_node(fwnode, pl, &sfp_phylink_ops); ++ bus = sfp_bus_find_fwnode(fwnode); + if (IS_ERR(bus)) { + ret = PTR_ERR(bus); + netdev_err(pl->netdev, "unable to attach SFP bus: %d\n", ret); +@@ -550,7 +550,10 @@ static int phylink_register_sfp(struct p + + pl->sfp_bus = bus; + +- return 0; ++ ret = sfp_bus_add_upstream(bus, pl, &sfp_phylink_ops); ++ sfp_bus_put(bus); ++ ++ return ret; + } + + /** +@@ -634,8 +637,7 @@ EXPORT_SYMBOL_GPL(phylink_create); + */ + void phylink_destroy(struct phylink *pl) + { +- if (pl->sfp_bus) +- sfp_unregister_upstream(pl->sfp_bus); ++ sfp_bus_del_upstream(pl->sfp_bus); + if (pl->link_gpio) + gpiod_put(pl->link_gpio); + +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -328,10 +328,19 @@ static void sfp_bus_release(struct kref + kfree(bus); + } + +-static void sfp_bus_put(struct sfp_bus *bus) ++/** ++ * sfp_bus_put() - put a reference on the &struct sfp_bus ++ * bus: the &struct sfp_bus found via sfp_bus_find_fwnode() ++ * ++ * Put a reference on the &struct sfp_bus and free the underlying structure ++ * if this was the last reference. ++ */ ++void sfp_bus_put(struct sfp_bus *bus) + { +- kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex); ++ if (bus) ++ kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex); + } ++EXPORT_SYMBOL_GPL(sfp_bus_put); + + static int sfp_register_bus(struct sfp_bus *bus) + { +@@ -347,11 +356,11 @@ static int sfp_register_bus(struct sfp_b + return ret; + } + } ++ bus->registered = true; + bus->socket_ops->attach(bus->sfp); + if (bus->started) + bus->socket_ops->start(bus->sfp); + bus->upstream_ops->attach(bus->upstream, bus); +- bus->registered = true; + return 0; + } + +@@ -445,13 +454,12 @@ static void sfp_upstream_clear(struct sf + } + + /** +- * sfp_register_upstream_node() - parse and register the neighbouring device ++ * sfp_bus_find_fwnode() - parse and locate the SFP bus from fwnode + * @fwnode: firmware node for the parent device (MAC or PHY) +- * @upstream: the upstream private data +- * @ops: the upstream's &struct sfp_upstream_ops + * +- * Parse the parent device's firmware node for a SFP bus, and register the +- * SFP bus using sfp_register_upstream(). ++ * Parse the parent device's firmware node for a SFP bus, and locate ++ * the sfp_bus structure, incrementing its reference count. This must ++ * be put via sfp_bus_put() when done. + * + * Returns: on success, a pointer to the sfp_bus structure, + * %NULL if no SFP is specified, +@@ -461,9 +469,7 @@ static void sfp_upstream_clear(struct sf + * %-ENOMEM if we failed to allocate the bus. + * an error from the upstream's connect_phy() method. + */ +-struct sfp_bus *sfp_register_upstream_node(struct fwnode_handle *fwnode, +- void *upstream, +- const struct sfp_upstream_ops *ops) ++struct sfp_bus *sfp_bus_find_fwnode(struct fwnode_handle *fwnode) + { + struct fwnode_reference_args ref; + struct sfp_bus *bus; +@@ -481,7 +487,39 @@ struct sfp_bus *sfp_register_upstream_no + if (!bus) + return ERR_PTR(-ENOMEM); + ++ return bus; ++} ++EXPORT_SYMBOL_GPL(sfp_bus_find_fwnode); ++ ++/** ++ * sfp_bus_add_upstream() - parse and register the neighbouring device ++ * @bus: the &struct sfp_bus found via sfp_bus_find_fwnode() ++ * @upstream: the upstream private data ++ * @ops: the upstream's &struct sfp_upstream_ops ++ * ++ * Add upstream driver for the SFP bus, and if the bus is complete, register ++ * the SFP bus using sfp_register_upstream(). This takes a reference on the ++ * bus, so it is safe to put the bus after this call. ++ * ++ * Returns: on success, a pointer to the sfp_bus structure, ++ * %NULL if no SFP is specified, ++ * on failure, an error pointer value: ++ * corresponding to the errors detailed for ++ * fwnode_property_get_reference_args(). ++ * %-ENOMEM if we failed to allocate the bus. ++ * an error from the upstream's connect_phy() method. ++ */ ++int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, ++ const struct sfp_upstream_ops *ops) ++{ ++ int ret; ++ ++ /* If no bus, return success */ ++ if (!bus) ++ return 0; ++ + rtnl_lock(); ++ kref_get(&bus->kref); + bus->upstream_ops = ops; + bus->upstream = upstream; + +@@ -494,33 +532,33 @@ struct sfp_bus *sfp_register_upstream_no + } + rtnl_unlock(); + +- if (ret) { ++ if (ret) + sfp_bus_put(bus); +- bus = ERR_PTR(ret); +- } + +- return bus; ++ return ret; + } +-EXPORT_SYMBOL_GPL(sfp_register_upstream_node); ++EXPORT_SYMBOL_GPL(sfp_bus_add_upstream); + + /** +- * sfp_unregister_upstream() - Unregister sfp bus ++ * sfp_bus_del_upstream() - Delete a sfp bus + * @bus: a pointer to the &struct sfp_bus structure for the sfp module + * +- * Unregister a previously registered upstream connection for the SFP +- * module. @bus is returned from sfp_register_upstream(). ++ * Delete a previously registered upstream connection for the SFP ++ * module. @bus should have been added by sfp_bus_add_upstream(). + */ +-void sfp_unregister_upstream(struct sfp_bus *bus) ++void sfp_bus_del_upstream(struct sfp_bus *bus) + { +- rtnl_lock(); +- if (bus->sfp) +- sfp_unregister_bus(bus); +- sfp_upstream_clear(bus); +- rtnl_unlock(); ++ if (bus) { ++ rtnl_lock(); ++ if (bus->sfp) ++ sfp_unregister_bus(bus); ++ sfp_upstream_clear(bus); ++ rtnl_unlock(); + +- sfp_bus_put(bus); ++ sfp_bus_put(bus); ++ } + } +-EXPORT_SYMBOL_GPL(sfp_unregister_upstream); ++EXPORT_SYMBOL_GPL(sfp_bus_del_upstream); + + /* Socket driver entry points */ + int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev) +--- a/include/linux/sfp.h ++++ b/include/linux/sfp.h +@@ -508,10 +508,11 @@ int sfp_get_module_eeprom(struct sfp_bus + u8 *data); + void sfp_upstream_start(struct sfp_bus *bus); + void sfp_upstream_stop(struct sfp_bus *bus); +-struct sfp_bus *sfp_register_upstream_node(struct fwnode_handle *fwnode, +- void *upstream, +- const struct sfp_upstream_ops *ops); +-void sfp_unregister_upstream(struct sfp_bus *bus); ++void sfp_bus_put(struct sfp_bus *bus); ++struct sfp_bus *sfp_bus_find_fwnode(struct fwnode_handle *fwnode); ++int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, ++ const struct sfp_upstream_ops *ops); ++void sfp_bus_del_upstream(struct sfp_bus *bus); + #else + static inline int sfp_parse_port(struct sfp_bus *bus, + const struct sfp_eeprom_id *id, +@@ -553,14 +554,22 @@ static inline void sfp_upstream_stop(str + { + } + +-static inline struct sfp_bus *sfp_register_upstream_node( +- struct fwnode_handle *fwnode, void *upstream, +- const struct sfp_upstream_ops *ops) ++static inline void sfp_bus_put(struct sfp_bus *bus) ++{ ++} ++ ++static inline struct sfp_bus *sfp_bus_find_fwnode(struct fwnode_handle *fwnode) + { + return NULL; + } + +-static inline void sfp_unregister_upstream(struct sfp_bus *bus) ++static int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, ++ const struct sfp_upstream_ops *ops) ++{ ++ return 0; ++} ++ ++static inline void sfp_bus_del_upstream(struct sfp_bus *bus) + { + } + #endif diff --git a/target/linux/generic/backport-4.19/718-v5.5-net-sfp-fix-sfp_bus_put-kernel-documentation.patch b/target/linux/generic/backport-4.19/718-v5.5-net-sfp-fix-sfp_bus_put-kernel-documentation.patch new file mode 100644 index 0000000000..59d2ce588c --- /dev/null +++ b/target/linux/generic/backport-4.19/718-v5.5-net-sfp-fix-sfp_bus_put-kernel-documentation.patch @@ -0,0 +1,27 @@ +From ea7bfd81921827d334c2a23bd11ef0e4e2abafd2 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Sat, 9 Nov 2019 08:13:50 +0000 +Subject: [PATCH 616/660] net: sfp: fix sfp_bus_put() kernel documentation + +The kbuild test robot found a problem with htmldocs with the recent +change to the SFP interfaces. Fix the kernel documentation for +sfp_bus_put() which was missing an '@' before the argument name +description. + +Fixes: 727b3668b730 ("net: sfp: rework upstream interface") +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp-bus.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -330,7 +330,7 @@ static void sfp_bus_release(struct kref + + /** + * sfp_bus_put() - put a reference on the &struct sfp_bus +- * bus: the &struct sfp_bus found via sfp_bus_find_fwnode() ++ * @bus: the &struct sfp_bus found via sfp_bus_find_fwnode() + * + * Put a reference on the &struct sfp_bus and free the underlying structure + * if this was the last reference. diff --git a/target/linux/generic/backport-4.19/719-v5.5-net-sfp-fix-sfp_bus_add_upstream-warning.patch b/target/linux/generic/backport-4.19/719-v5.5-net-sfp-fix-sfp_bus_add_upstream-warning.patch new file mode 100644 index 0000000000..9528049e1b --- /dev/null +++ b/target/linux/generic/backport-4.19/719-v5.5-net-sfp-fix-sfp_bus_add_upstream-warning.patch @@ -0,0 +1,27 @@ +From f76d84cd85f8bd3f083495f7ca723822cba8abc9 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Mon, 11 Nov 2019 10:23:35 +0000 +Subject: [PATCH 617/660] net: sfp: fix sfp_bus_add_upstream() warning + +When building with SFP disabled, the stub for sfp_bus_add_upstream() +missed "inline". Add it. + +Fixes: 727b3668b730 ("net: sfp: rework upstream interface") +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + include/linux/sfp.h | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/include/linux/sfp.h ++++ b/include/linux/sfp.h +@@ -563,8 +563,8 @@ static inline struct sfp_bus *sfp_bus_fi + return NULL; + } + +-static int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, +- const struct sfp_upstream_ops *ops) ++static inline int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, ++ const struct sfp_upstream_ops *ops) + { + return 0; + } diff --git a/target/linux/generic/backport-4.19/720-v5.5-net-sfp-move-sfp-sub-state-machines-into-separate-fu.patch b/target/linux/generic/backport-4.19/720-v5.5-net-sfp-move-sfp-sub-state-machines-into-separate-fu.patch new file mode 100644 index 0000000000..2f90b00438 --- /dev/null +++ b/target/linux/generic/backport-4.19/720-v5.5-net-sfp-move-sfp-sub-state-machines-into-separate-fu.patch @@ -0,0 +1,124 @@ +From b9d6ed5cdb67533feda7f221eb06f2f9f1ff5047 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 11 Oct 2019 19:33:58 +0100 +Subject: [PATCH 618/660] net: sfp: move sfp sub-state machines into separate + functions + +Move the SFP sub-state machines out of the main state machine function, +in preparation for it doing a bit more with the device state. By doing +so, we ensure that our debug after the main state machine is always +printed. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 74 +++++++++++++++++++++++++------------------ + 1 file changed, 43 insertions(+), 31 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1479,19 +1479,34 @@ static void sfp_sm_mod_remove(struct sfp + dev_info(sfp->dev, "module removed\n"); + } + +-static void sfp_sm_event(struct sfp *sfp, unsigned int event) ++/* This state machine tracks the netdev up/down state */ ++static void sfp_sm_device(struct sfp *sfp, unsigned int event) + { +- mutex_lock(&sfp->sm_mutex); ++ switch (sfp->sm_dev_state) { ++ default: ++ if (event == SFP_E_DEV_UP) ++ sfp->sm_dev_state = SFP_DEV_UP; ++ break; + +- dev_dbg(sfp->dev, "SM: enter %s:%s:%s event %s\n", +- mod_state_to_str(sfp->sm_mod_state), +- dev_state_to_str(sfp->sm_dev_state), +- sm_state_to_str(sfp->sm_state), +- event_to_str(event)); ++ case SFP_DEV_UP: ++ if (event == SFP_E_DEV_DOWN) { ++ /* If the module has a PHY, avoid raising TX disable ++ * as this resets the PHY. Otherwise, raise it to ++ * turn the laser off. ++ */ ++ if (!sfp->mod_phy) ++ sfp_module_tx_disable(sfp); ++ sfp->sm_dev_state = SFP_DEV_DOWN; ++ } ++ break; ++ } ++} + +- /* This state machine tracks the insert/remove state of +- * the module, and handles probing the on-board EEPROM. +- */ ++/* This state machine tracks the insert/remove state of ++ * the module, and handles probing the on-board EEPROM. ++ */ ++static void sfp_sm_module(struct sfp *sfp, unsigned int event) ++{ + switch (sfp->sm_mod_state) { + default: + if (event == SFP_E_INSERT && sfp->attached) { +@@ -1531,27 +1546,10 @@ static void sfp_sm_event(struct sfp *sfp + } + break; + } ++} + +- /* This state machine tracks the netdev up/down state */ +- switch (sfp->sm_dev_state) { +- default: +- if (event == SFP_E_DEV_UP) +- sfp->sm_dev_state = SFP_DEV_UP; +- break; +- +- case SFP_DEV_UP: +- if (event == SFP_E_DEV_DOWN) { +- /* If the module has a PHY, avoid raising TX disable +- * as this resets the PHY. Otherwise, raise it to +- * turn the laser off. +- */ +- if (!sfp->mod_phy) +- sfp_module_tx_disable(sfp); +- sfp->sm_dev_state = SFP_DEV_DOWN; +- } +- break; +- } +- ++static void sfp_sm_main(struct sfp *sfp, unsigned int event) ++{ + /* Some events are global */ + if (sfp->sm_state != SFP_S_DOWN && + (sfp->sm_mod_state != SFP_MOD_PRESENT || +@@ -1562,7 +1560,6 @@ static void sfp_sm_event(struct sfp *sfp + if (sfp->mod_phy) + sfp_sm_phy_detach(sfp); + sfp_sm_next(sfp, SFP_S_DOWN, 0); +- mutex_unlock(&sfp->sm_mutex); + return; + } + +@@ -1617,6 +1614,21 @@ static void sfp_sm_event(struct sfp *sfp + case SFP_S_TX_DISABLE: + break; + } ++} ++ ++static void sfp_sm_event(struct sfp *sfp, unsigned int event) ++{ ++ mutex_lock(&sfp->sm_mutex); ++ ++ dev_dbg(sfp->dev, "SM: enter %s:%s:%s event %s\n", ++ mod_state_to_str(sfp->sm_mod_state), ++ dev_state_to_str(sfp->sm_dev_state), ++ sm_state_to_str(sfp->sm_state), ++ event_to_str(event)); ++ ++ sfp_sm_module(sfp, event); ++ sfp_sm_device(sfp, event); ++ sfp_sm_main(sfp, event); + + dev_dbg(sfp->dev, "SM: exit %s:%s:%s\n", + mod_state_to_str(sfp->sm_mod_state), diff --git a/target/linux/generic/backport-4.19/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch b/target/linux/generic/backport-4.19/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch new file mode 100644 index 0000000000..5b3caaf0fd --- /dev/null +++ b/target/linux/generic/backport-4.19/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch @@ -0,0 +1,41 @@ +From 7e89b737c97a9e7a81dd1584000bc136b92f12fd Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 11 Oct 2019 22:14:47 +0100 +Subject: [PATCH 619/660] net: sfp: move tx disable on device down to main + state machine + +Move the tx disable assertion on device down to the main state +machine. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 10 ++-------- + 1 file changed, 2 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1489,15 +1489,8 @@ static void sfp_sm_device(struct sfp *sf + break; + + case SFP_DEV_UP: +- if (event == SFP_E_DEV_DOWN) { +- /* If the module has a PHY, avoid raising TX disable +- * as this resets the PHY. Otherwise, raise it to +- * turn the laser off. +- */ +- if (!sfp->mod_phy) +- sfp_module_tx_disable(sfp); ++ if (event == SFP_E_DEV_DOWN) + sfp->sm_dev_state = SFP_DEV_DOWN; +- } + break; + } + } +@@ -1559,6 +1552,7 @@ static void sfp_sm_main(struct sfp *sfp, + sfp_sm_link_down(sfp); + if (sfp->mod_phy) + sfp_sm_phy_detach(sfp); ++ sfp_module_tx_disable(sfp); + sfp_sm_next(sfp, SFP_S_DOWN, 0); + return; + } diff --git a/target/linux/generic/backport-4.19/722-v5.5-net-sfp-rename-sfp_sm_ins_next-as-sfp_sm_mod_next.patch b/target/linux/generic/backport-4.19/722-v5.5-net-sfp-rename-sfp_sm_ins_next-as-sfp_sm_mod_next.patch new file mode 100644 index 0000000000..ed84e76fdf --- /dev/null +++ b/target/linux/generic/backport-4.19/722-v5.5-net-sfp-rename-sfp_sm_ins_next-as-sfp_sm_mod_next.patch @@ -0,0 +1,71 @@ +From f2a1ccfc4ad4f97c98c3cc18eb32992151ce089a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 11 Oct 2019 22:27:21 +0100 +Subject: [PATCH 620/660] net: sfp: rename sfp_sm_ins_next() as + sfp_sm_mod_next() + +sfp_sm_ins_next() modifies the module state machine. Change it's name +to reflect this. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 16 ++++++++-------- + 1 file changed, 8 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1180,7 +1180,7 @@ static void sfp_sm_next(struct sfp *sfp, + sfp_sm_set_timer(sfp, timeout); + } + +-static void sfp_sm_ins_next(struct sfp *sfp, unsigned int state, ++static void sfp_sm_mod_next(struct sfp *sfp, unsigned int state, + unsigned int timeout) + { + sfp->sm_mod_state = state; +@@ -1504,22 +1504,22 @@ static void sfp_sm_module(struct sfp *sf + default: + if (event == SFP_E_INSERT && sfp->attached) { + sfp_module_tx_disable(sfp); +- sfp_sm_ins_next(sfp, SFP_MOD_PROBE, T_PROBE_INIT); ++ sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_PROBE_INIT); + } + break; + + case SFP_MOD_PROBE: + if (event == SFP_E_REMOVE) { +- sfp_sm_ins_next(sfp, SFP_MOD_EMPTY, 0); ++ sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); + } else if (event == SFP_E_TIMEOUT) { + int val = sfp_sm_mod_probe(sfp); + + if (val == 0) +- sfp_sm_ins_next(sfp, SFP_MOD_PRESENT, 0); ++ sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0); + else if (val > 0) +- sfp_sm_ins_next(sfp, SFP_MOD_HPOWER, val); ++ sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, val); + else if (val != -EAGAIN) +- sfp_sm_ins_next(sfp, SFP_MOD_ERROR, 0); ++ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); + else + sfp_sm_set_timer(sfp, T_PROBE_RETRY); + } +@@ -1527,7 +1527,7 @@ static void sfp_sm_module(struct sfp *sf + + case SFP_MOD_HPOWER: + if (event == SFP_E_TIMEOUT) { +- sfp_sm_ins_next(sfp, SFP_MOD_PRESENT, 0); ++ sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0); + break; + } + /* fallthrough */ +@@ -1535,7 +1535,7 @@ static void sfp_sm_module(struct sfp *sf + case SFP_MOD_ERROR: + if (event == SFP_E_REMOVE) { + sfp_sm_mod_remove(sfp); +- sfp_sm_ins_next(sfp, SFP_MOD_EMPTY, 0); ++ sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); + } + break; + } diff --git a/target/linux/generic/backport-4.19/723-v5.5-net-sfp-handle-module-remove-outside-state-machine.patch b/target/linux/generic/backport-4.19/723-v5.5-net-sfp-handle-module-remove-outside-state-machine.patch new file mode 100644 index 0000000000..542aeaea77 --- /dev/null +++ b/target/linux/generic/backport-4.19/723-v5.5-net-sfp-handle-module-remove-outside-state-machine.patch @@ -0,0 +1,53 @@ +From d2591ea5520e2ee8fa557f96bb64c23cafac4b20 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 15 Oct 2019 10:33:13 +0100 +Subject: [PATCH 621/660] net: sfp: handle module remove outside state machine + +Removing a module resets the module state machine back to its initial +state. Rather than explicitly handling this in every state, handle it +early on outside of the state machine. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 16 +++++++++------- + 1 file changed, 9 insertions(+), 7 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1500,6 +1500,14 @@ static void sfp_sm_device(struct sfp *sf + */ + static void sfp_sm_module(struct sfp *sfp, unsigned int event) + { ++ /* Handle remove event globally, it resets this state machine */ ++ if (event == SFP_E_REMOVE) { ++ if (sfp->sm_mod_state > SFP_MOD_PROBE) ++ sfp_sm_mod_remove(sfp); ++ sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); ++ return; ++ } ++ + switch (sfp->sm_mod_state) { + default: + if (event == SFP_E_INSERT && sfp->attached) { +@@ -1509,9 +1517,7 @@ static void sfp_sm_module(struct sfp *sf + break; + + case SFP_MOD_PROBE: +- if (event == SFP_E_REMOVE) { +- sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); +- } else if (event == SFP_E_TIMEOUT) { ++ if (event == SFP_E_TIMEOUT) { + int val = sfp_sm_mod_probe(sfp); + + if (val == 0) +@@ -1533,10 +1539,6 @@ static void sfp_sm_module(struct sfp *sf + /* fallthrough */ + case SFP_MOD_PRESENT: + case SFP_MOD_ERROR: +- if (event == SFP_E_REMOVE) { +- sfp_sm_mod_remove(sfp); +- sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); +- } + break; + } + } diff --git a/target/linux/generic/backport-4.19/724-v5.5-net-sfp-rename-T_PROBE_WAIT-to-T_SERIAL.patch b/target/linux/generic/backport-4.19/724-v5.5-net-sfp-rename-T_PROBE_WAIT-to-T_SERIAL.patch new file mode 100644 index 0000000000..e0c35feea3 --- /dev/null +++ b/target/linux/generic/backport-4.19/724-v5.5-net-sfp-rename-T_PROBE_WAIT-to-T_SERIAL.patch @@ -0,0 +1,51 @@ +From 615090acb3c0b41691f3a03522ea38350387c0e4 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 15 Oct 2019 10:54:15 +0100 +Subject: [PATCH 622/660] net: sfp: rename T_PROBE_WAIT to T_SERIAL + +SFF-8472 rev 12.2 defines the time for the serial bus to become ready +using t_serial. Use this as our identifier for this timeout to make +it clear what we are referring to. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 13 ++++++------- + 1 file changed, 6 insertions(+), 7 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -147,11 +147,10 @@ static const enum gpiod_flags gpio_flags + * the same length on the PCB, which means it's possible for MOD DEF 0 to + * connect before the I2C bus on MOD DEF 1/2. + * +- * The SFP MSA specifies 300ms as t_init (the time taken for TX_FAULT to +- * be deasserted) but makes no mention of the earliest time before we can +- * access the I2C EEPROM. However, Avago modules require 300ms. ++ * The SFF-8472 specifies t_serial ("Time from power on until module is ++ * ready for data transmission over the two wire serial bus.") as 300ms. + */ +-#define T_PROBE_INIT msecs_to_jiffies(300) ++#define T_SERIAL msecs_to_jiffies(300) + #define T_HPOWER_LEVEL msecs_to_jiffies(300) + #define T_PROBE_RETRY msecs_to_jiffies(100) + +@@ -1495,8 +1494,8 @@ static void sfp_sm_device(struct sfp *sf + } + } + +-/* This state machine tracks the insert/remove state of +- * the module, and handles probing the on-board EEPROM. ++/* This state machine tracks the insert/remove state of the module, probes ++ * the on-board EEPROM, and sets up the power level. + */ + static void sfp_sm_module(struct sfp *sfp, unsigned int event) + { +@@ -1512,7 +1511,7 @@ static void sfp_sm_module(struct sfp *sf + default: + if (event == SFP_E_INSERT && sfp->attached) { + sfp_module_tx_disable(sfp); +- sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_PROBE_INIT); ++ sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL); + } + break; + diff --git a/target/linux/generic/backport-4.19/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch b/target/linux/generic/backport-4.19/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch new file mode 100644 index 0000000000..0b358f86d2 --- /dev/null +++ b/target/linux/generic/backport-4.19/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch @@ -0,0 +1,115 @@ +From d4b8746219e8c0361e5ed6e440ab3a8a600d1f76 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 11 Oct 2019 17:24:40 +0100 +Subject: [PATCH 623/660] net: sfp: parse SFP power requirement earlier + +Parse the SFP power requirement earlier, in preparation for moving the +power level setup code. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 42 +++++++++++++++++++++++++++++------------- + 1 file changed, 29 insertions(+), 13 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -196,6 +196,8 @@ struct sfp { + unsigned int sm_retries; + + struct sfp_eeprom_id id; ++ unsigned int module_power_mW; ++ + #if IS_ENABLED(CONFIG_HWMON) + struct sfp_diag diag; + struct device *hwmon_dev; +@@ -1309,17 +1311,14 @@ static void sfp_sm_mod_init(struct sfp * + sfp_sm_probe_phy(sfp); + } + +-static int sfp_sm_mod_hpower(struct sfp *sfp) ++static int sfp_module_parse_power(struct sfp *sfp) + { +- u32 power; +- u8 val; +- int err; ++ u32 power_mW = 1000; + +- power = 1000; + if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL)) +- power = 1500; ++ power_mW = 1500; + if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL)) +- power = 2000; ++ power_mW = 2000; + + if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE && + (sfp->id.ext.diagmon & (SFP_DIAGMON_DDM | SFP_DIAGMON_ADDRMODE)) != +@@ -1328,23 +1327,33 @@ static int sfp_sm_mod_hpower(struct sfp + * or requires an address change sequence, so assume that + * the module powers up in the indicated power mode. + */ +- if (power > sfp->max_power_mW) { ++ if (power_mW > sfp->max_power_mW) { + dev_err(sfp->dev, + "Host does not support %u.%uW modules\n", +- power / 1000, (power / 100) % 10); ++ power_mW / 1000, (power_mW / 100) % 10); + return -EINVAL; + } + return 0; + } + +- if (power > sfp->max_power_mW) { ++ if (power_mW > sfp->max_power_mW) { + dev_warn(sfp->dev, + "Host does not support %u.%uW modules, module left in power mode 1\n", +- power / 1000, (power / 100) % 10); ++ power_mW / 1000, (power_mW / 100) % 10); + return 0; + } + +- if (power <= 1000) ++ sfp->module_power_mW = power_mW; ++ ++ return 0; ++} ++ ++static int sfp_sm_mod_hpower(struct sfp *sfp) ++{ ++ u8 val; ++ int err; ++ ++ if (sfp->module_power_mW <= 1000) + return 0; + + err = sfp_read(sfp, true, SFP_EXT_STATUS, &val, sizeof(val)); +@@ -1364,7 +1373,8 @@ static int sfp_sm_mod_hpower(struct sfp + } + + dev_info(sfp->dev, "Module switched to %u.%uW power level\n", +- power / 1000, (power / 100) % 10); ++ sfp->module_power_mW / 1000, ++ (sfp->module_power_mW / 100) % 10); + return T_HPOWER_LEVEL; + + err: +@@ -1451,6 +1461,11 @@ static int sfp_sm_mod_probe(struct sfp * + dev_warn(sfp->dev, + "module address swap to access page 0xA2 is not supported.\n"); + ++ /* Parse the module power requirement */ ++ ret = sfp_module_parse_power(sfp); ++ if (ret < 0) ++ return ret; ++ + ret = sfp_hwmon_insert(sfp); + if (ret < 0) + return ret; +@@ -1474,6 +1489,7 @@ static void sfp_sm_mod_remove(struct sfp + sfp_module_tx_disable(sfp); + + memset(&sfp->id, 0, sizeof(sfp->id)); ++ sfp->module_power_mW = 0; + + dev_info(sfp->dev, "module removed\n"); + } diff --git a/target/linux/generic/backport-4.19/726-v5.5-net-sfp-avoid-power-switch-on-address-change-modules.patch b/target/linux/generic/backport-4.19/726-v5.5-net-sfp-avoid-power-switch-on-address-change-modules.patch new file mode 100644 index 0000000000..2ddd4c4d02 --- /dev/null +++ b/target/linux/generic/backport-4.19/726-v5.5-net-sfp-avoid-power-switch-on-address-change-modules.patch @@ -0,0 +1,65 @@ +From dca678b8838945572cf50584cb33a7199c1fd397 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Thu, 17 Oct 2019 00:24:18 +0100 +Subject: [PATCH 624/660] net: sfp: avoid power switch on address-change + modules + +If the module indicates that it requires an address change sequence to +switch between address 0x50 and 0x51, which we don't support, we can't +write to the register that controls the power mode to switch to high +power mode. Warn the user that the module may not be functional in +this case, and don't try to change the power mode. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 31 ++++++++++++++++++++----------- + 1 file changed, 20 insertions(+), 11 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1320,25 +1320,34 @@ static int sfp_module_parse_power(struct + if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL)) + power_mW = 2000; + +- if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE && +- (sfp->id.ext.diagmon & (SFP_DIAGMON_DDM | SFP_DIAGMON_ADDRMODE)) != +- SFP_DIAGMON_DDM) { +- /* The module appears not to implement bus address 0xa2, +- * or requires an address change sequence, so assume that +- * the module powers up in the indicated power mode. +- */ +- if (power_mW > sfp->max_power_mW) { ++ if (power_mW > sfp->max_power_mW) { ++ /* Module power specification exceeds the allowed maximum. */ ++ if (sfp->id.ext.sff8472_compliance == ++ SFP_SFF8472_COMPLIANCE_NONE && ++ !(sfp->id.ext.diagmon & SFP_DIAGMON_DDM)) { ++ /* The module appears not to implement bus address ++ * 0xa2, so assume that the module powers up in the ++ * indicated mode. ++ */ + dev_err(sfp->dev, + "Host does not support %u.%uW modules\n", + power_mW / 1000, (power_mW / 100) % 10); + return -EINVAL; ++ } else { ++ dev_warn(sfp->dev, ++ "Host does not support %u.%uW modules, module left in power mode 1\n", ++ power_mW / 1000, (power_mW / 100) % 10); ++ return 0; + } +- return 0; + } + +- if (power_mW > sfp->max_power_mW) { ++ /* If the module requires a higher power mode, but also requires ++ * an address change sequence, warn the user that the module may ++ * not be functional. ++ */ ++ if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE && power_mW > 1000) { + dev_warn(sfp->dev, +- "Host does not support %u.%uW modules, module left in power mode 1\n", ++ "Address Change Sequence not supported but module requies %u.%uW, module may not be functional\n", + power_mW / 1000, (power_mW / 100) % 10); + return 0; + } diff --git a/target/linux/generic/backport-4.19/727-v5.5-net-sfp-control-TX_DISABLE-and-phy-only-from-main-st.patch b/target/linux/generic/backport-4.19/727-v5.5-net-sfp-control-TX_DISABLE-and-phy-only-from-main-st.patch new file mode 100644 index 0000000000..0eac6abb88 --- /dev/null +++ b/target/linux/generic/backport-4.19/727-v5.5-net-sfp-control-TX_DISABLE-and-phy-only-from-main-st.patch @@ -0,0 +1,52 @@ +From df5c4d93c5a59cba0f7479a4cd4e22b50726ce88 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Thu, 17 Oct 2019 11:12:42 +0100 +Subject: [PATCH 625/660] net: sfp: control TX_DISABLE and phy only from main + state machine + +We initialise TX_DISABLE when the sfp cage is probed, and then +maintain its state in the main state machine. However, the module +state machine: +- negates it when detecting a newly inserted module when it's already + guaranteed to be negated. +- negates it when the module is removed, but the main state machine + will do this anyway. + +Make TX_DISABLE entirely controlled by the main state machine. + +The main state machine also probes the module for a PHY, and removes +the PHY when the the module is removed. Hence, removing the PHY in +sfp_sm_module_remove() is also redundant, and is a left-over from +when we tried to probe for the PHY from the module state machine. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 9 +-------- + 1 file changed, 1 insertion(+), 8 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1492,11 +1492,6 @@ static void sfp_sm_mod_remove(struct sfp + + sfp_hwmon_remove(sfp); + +- if (sfp->mod_phy) +- sfp_sm_phy_detach(sfp); +- +- sfp_module_tx_disable(sfp); +- + memset(&sfp->id, 0, sizeof(sfp->id)); + sfp->module_power_mW = 0; + +@@ -1534,10 +1529,8 @@ static void sfp_sm_module(struct sfp *sf + + switch (sfp->sm_mod_state) { + default: +- if (event == SFP_E_INSERT && sfp->attached) { +- sfp_module_tx_disable(sfp); ++ if (event == SFP_E_INSERT && sfp->attached) + sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL); +- } + break; + + case SFP_MOD_PROBE: diff --git a/target/linux/generic/backport-4.19/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch b/target/linux/generic/backport-4.19/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch new file mode 100644 index 0000000000..7830b9268f --- /dev/null +++ b/target/linux/generic/backport-4.19/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch @@ -0,0 +1,53 @@ +From 5ed0bd49b2d3ac4439c2d7f44e5a82b7cf6f409a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 18 Oct 2019 10:09:02 +0100 +Subject: [PATCH 626/660] net: sfp: split the PHY probe from sfp_sm_mod_init() + +Move the PHY probe into a separate function, splitting it from +sfp_sm_mod_init(). This will allow us to eliminate the 50ms mdelay() +inside the state machine. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 21 +++++++++++++-------- + 1 file changed, 13 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1288,14 +1288,10 @@ static void sfp_sm_fault(struct sfp *sfp + static void sfp_sm_mod_init(struct sfp *sfp) + { + sfp_module_tx_enable(sfp); ++} + +- /* Wait t_init before indicating that the link is up, provided the +- * current state indicates no TX_FAULT. If TX_FAULT clears before +- * this time, that's fine too. +- */ +- sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); +- sfp->sm_retries = 5; +- ++static void sfp_sm_probe_for_phy(struct sfp *sfp) ++{ + /* Setting the serdes link mode is guesswork: there's no + * field in the EEPROM which indicates what mode should + * be used. +@@ -1580,8 +1576,17 @@ static void sfp_sm_main(struct sfp *sfp, + switch (sfp->sm_state) { + case SFP_S_DOWN: + if (sfp->sm_mod_state == SFP_MOD_PRESENT && +- sfp->sm_dev_state == SFP_DEV_UP) ++ sfp->sm_dev_state == SFP_DEV_UP) { + sfp_sm_mod_init(sfp); ++ sfp_sm_probe_for_phy(sfp); ++ ++ /* Wait t_init before indicating that the link is up, ++ * provided the current state indicates no TX_FAULT. If ++ * TX_FAULT clears before this time, that's fine too. ++ */ ++ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); ++ sfp->sm_retries = 5; ++ } + break; + + case SFP_S_INIT: diff --git a/target/linux/generic/backport-4.19/729-v5.5-net-sfp-eliminate-mdelay-from-PHY-probe.patch b/target/linux/generic/backport-4.19/729-v5.5-net-sfp-eliminate-mdelay-from-PHY-probe.patch new file mode 100644 index 0000000000..5dc92bd10e --- /dev/null +++ b/target/linux/generic/backport-4.19/729-v5.5-net-sfp-eliminate-mdelay-from-PHY-probe.patch @@ -0,0 +1,130 @@ +From 0fe72afaa31f98ebd71bd6683fc47021105d0157 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 18 Oct 2019 10:21:46 +0100 +Subject: [PATCH 627/660] net: sfp: eliminate mdelay() from PHY probe + +Rather than using mdelay() to wait before probing the PHY (which holds +several locks, including the rtnl lock), add an extra wait state to +the state machine to introduce the 50ms delay without holding any +locks. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 52 +++++++++++++++++++++++++++++++++---------- + 1 file changed, 40 insertions(+), 12 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -52,6 +52,7 @@ enum { + SFP_DEV_UP, + + SFP_S_DOWN = 0, ++ SFP_S_WAIT, + SFP_S_INIT, + SFP_S_WAIT_LOS, + SFP_S_LINK_UP, +@@ -108,6 +109,7 @@ static const char *event_to_str(unsigned + + static const char * const sm_state_strings[] = { + [SFP_S_DOWN] = "down", ++ [SFP_S_WAIT] = "wait", + [SFP_S_INIT] = "init", + [SFP_S_WAIT_LOS] = "wait_los", + [SFP_S_LINK_UP] = "link_up", +@@ -139,6 +141,7 @@ static const enum gpiod_flags gpio_flags + GPIOD_ASIS, + }; + ++#define T_WAIT msecs_to_jiffies(50) + #define T_INIT_JIFFIES msecs_to_jiffies(300) + #define T_RESET_US 10 + #define T_FAULT_RECOVER msecs_to_jiffies(1000) +@@ -159,9 +162,6 @@ static const enum gpiod_flags gpio_flags + */ + #define SFP_PHY_ADDR 22 + +-/* Give this long for the PHY to reset. */ +-#define T_PHY_RESET_MS 50 +- + struct sff_data { + unsigned int gpios; + bool (*module_supported)(const struct sfp_eeprom_id *id); +@@ -1202,8 +1202,6 @@ static void sfp_sm_probe_phy(struct sfp + struct phy_device *phy; + int err; + +- msleep(T_PHY_RESET_MS); +- + phy = mdiobus_scan(sfp->i2c_mii, SFP_PHY_ADDR); + if (phy == ERR_PTR(-ENODEV)) { + dev_info(sfp->dev, "no PHY detected\n"); +@@ -1558,6 +1556,8 @@ static void sfp_sm_module(struct sfp *sf + + static void sfp_sm_main(struct sfp *sfp, unsigned int event) + { ++ unsigned long timeout; ++ + /* Some events are global */ + if (sfp->sm_state != SFP_S_DOWN && + (sfp->sm_mod_state != SFP_MOD_PRESENT || +@@ -1575,17 +1575,45 @@ static void sfp_sm_main(struct sfp *sfp, + /* The main state machine */ + switch (sfp->sm_state) { + case SFP_S_DOWN: +- if (sfp->sm_mod_state == SFP_MOD_PRESENT && +- sfp->sm_dev_state == SFP_DEV_UP) { +- sfp_sm_mod_init(sfp); +- sfp_sm_probe_for_phy(sfp); ++ if (sfp->sm_mod_state != SFP_MOD_PRESENT || ++ sfp->sm_dev_state != SFP_DEV_UP) ++ break; ++ ++ sfp_sm_mod_init(sfp); ++ ++ /* Initialise the fault clearance retries */ ++ sfp->sm_retries = 5; ++ ++ /* We need to check the TX_FAULT state, which is not defined ++ * while TX_DISABLE is asserted. The earliest we want to do ++ * anything (such as probe for a PHY) is 50ms. ++ */ ++ sfp_sm_next(sfp, SFP_S_WAIT, T_WAIT); ++ break; ++ ++ case SFP_S_WAIT: ++ if (event != SFP_E_TIMEOUT) ++ break; ++ ++ sfp_sm_probe_for_phy(sfp); + ++ if (sfp->state & SFP_F_TX_FAULT) { + /* Wait t_init before indicating that the link is up, + * provided the current state indicates no TX_FAULT. If + * TX_FAULT clears before this time, that's fine too. + */ +- sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); +- sfp->sm_retries = 5; ++ timeout = T_INIT_JIFFIES; ++ if (timeout > T_WAIT) ++ timeout -= T_WAIT; ++ else ++ timeout = 1; ++ ++ sfp_sm_next(sfp, SFP_S_INIT, timeout); ++ } else { ++ /* TX_FAULT is not asserted, assume the module has ++ * finished initialising. ++ */ ++ goto init_done; + } + break; + +@@ -1593,7 +1621,7 @@ static void sfp_sm_main(struct sfp *sfp, + if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) + sfp_sm_fault(sfp, true); + else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) +- sfp_sm_link_check_los(sfp); ++ init_done: sfp_sm_link_check_los(sfp); + break; + + case SFP_S_WAIT_LOS: diff --git a/target/linux/generic/backport-4.19/730-v5.5-net-sfp-allow-fault-processing-to-transition-to-othe.patch b/target/linux/generic/backport-4.19/730-v5.5-net-sfp-allow-fault-processing-to-transition-to-othe.patch new file mode 100644 index 0000000000..6e34e6cc0f --- /dev/null +++ b/target/linux/generic/backport-4.19/730-v5.5-net-sfp-allow-fault-processing-to-transition-to-othe.patch @@ -0,0 +1,69 @@ +From 2aa424ee7fbe43e2cd24e28c2f6388c4e1796bd2 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 18 Oct 2019 09:58:33 +0100 +Subject: [PATCH 628/660] net: sfp: allow fault processing to transition to + other states + +Add the next state to sfp_sm_fault() so that it can branch to other +states. This will be necessary to improve the initialisation path. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 12 ++++++------ + 1 file changed, 6 insertions(+), 6 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1269,7 +1269,7 @@ static bool sfp_los_event_inactive(struc + event == SFP_E_LOS_LOW); + } + +-static void sfp_sm_fault(struct sfp *sfp, bool warn) ++static void sfp_sm_fault(struct sfp *sfp, unsigned int next_state, bool warn) + { + if (sfp->sm_retries && !--sfp->sm_retries) { + dev_err(sfp->dev, +@@ -1279,7 +1279,7 @@ static void sfp_sm_fault(struct sfp *sfp + if (warn) + dev_err(sfp->dev, "module transmit fault indicated\n"); + +- sfp_sm_next(sfp, SFP_S_TX_FAULT, T_FAULT_RECOVER); ++ sfp_sm_next(sfp, next_state, T_FAULT_RECOVER); + } + } + +@@ -1619,14 +1619,14 @@ static void sfp_sm_main(struct sfp *sfp, + + case SFP_S_INIT: + if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) +- sfp_sm_fault(sfp, true); ++ sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); + else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) + init_done: sfp_sm_link_check_los(sfp); + break; + + case SFP_S_WAIT_LOS: + if (event == SFP_E_TX_FAULT) +- sfp_sm_fault(sfp, true); ++ sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); + else if (sfp_los_event_inactive(sfp, event)) + sfp_sm_link_up(sfp); + break; +@@ -1634,7 +1634,7 @@ static void sfp_sm_main(struct sfp *sfp, + case SFP_S_LINK_UP: + if (event == SFP_E_TX_FAULT) { + sfp_sm_link_down(sfp); +- sfp_sm_fault(sfp, true); ++ sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); + } else if (sfp_los_event_active(sfp, event)) { + sfp_sm_link_down(sfp); + sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0); +@@ -1650,7 +1650,7 @@ static void sfp_sm_main(struct sfp *sfp, + + case SFP_S_REINIT: + if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { +- sfp_sm_fault(sfp, false); ++ sfp_sm_fault(sfp, SFP_S_TX_FAULT, false); + } else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) { + dev_info(sfp->dev, "module transmit fault recovered\n"); + sfp_sm_link_check_los(sfp); diff --git a/target/linux/generic/backport-4.19/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch b/target/linux/generic/backport-4.19/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch new file mode 100644 index 0000000000..03415fb6e7 --- /dev/null +++ b/target/linux/generic/backport-4.19/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch @@ -0,0 +1,80 @@ +From 38b62a12231be4b86fc5ca5477579d29831c02a5 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 18 Oct 2019 10:31:07 +0100 +Subject: [PATCH 629/660] net: sfp: ensure TX_FAULT has deasserted before + probing the PHY + +TX_FAULT should be deasserted to indicate that the module has completed +its initialisation. This may include the on-board PHY, so wait until +the module has deasserted TX_FAULT before probing the PHY. + +This means that we need an extra state to handle a TX_FAULT that +remains set for longer than t_init, since using the existing handling +state would bypass the PHY probe. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 31 +++++++++++++++++++++++++------ + 1 file changed, 25 insertions(+), 6 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -54,6 +54,7 @@ enum { + SFP_S_DOWN = 0, + SFP_S_WAIT, + SFP_S_INIT, ++ SFP_S_INIT_TX_FAULT, + SFP_S_WAIT_LOS, + SFP_S_LINK_UP, + SFP_S_TX_FAULT, +@@ -111,6 +112,7 @@ static const char * const sm_state_strin + [SFP_S_DOWN] = "down", + [SFP_S_WAIT] = "wait", + [SFP_S_INIT] = "init", ++ [SFP_S_INIT_TX_FAULT] = "init_tx_fault", + [SFP_S_WAIT_LOS] = "wait_los", + [SFP_S_LINK_UP] = "link_up", + [SFP_S_TX_FAULT] = "tx_fault", +@@ -1595,8 +1597,6 @@ static void sfp_sm_main(struct sfp *sfp, + if (event != SFP_E_TIMEOUT) + break; + +- sfp_sm_probe_for_phy(sfp); +- + if (sfp->state & SFP_F_TX_FAULT) { + /* Wait t_init before indicating that the link is up, + * provided the current state indicates no TX_FAULT. If +@@ -1618,10 +1618,29 @@ static void sfp_sm_main(struct sfp *sfp, + break; + + case SFP_S_INIT: +- if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) +- sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); +- else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) +- init_done: sfp_sm_link_check_los(sfp); ++ if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { ++ /* TX_FAULT is still asserted after t_init, so assume ++ * there is a fault. ++ */ ++ sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT, ++ sfp->sm_retries == 5); ++ } else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) { ++ init_done: /* TX_FAULT deasserted or we timed out with TX_FAULT ++ * clear. Probe for the PHY and check the LOS state. ++ */ ++ sfp_sm_probe_for_phy(sfp); ++ sfp_sm_link_check_los(sfp); ++ ++ /* Reset the fault retry count */ ++ sfp->sm_retries = 5; ++ } ++ break; ++ ++ case SFP_S_INIT_TX_FAULT: ++ if (event == SFP_E_TIMEOUT) { ++ sfp_module_tx_fault_reset(sfp); ++ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); ++ } + break; + + case SFP_S_WAIT_LOS: diff --git a/target/linux/generic/backport-4.19/732-v5.5-net-sfp-track-upstream-s-attachment-state-in-state-m.patch b/target/linux/generic/backport-4.19/732-v5.5-net-sfp-track-upstream-s-attachment-state-in-state-m.patch new file mode 100644 index 0000000000..5ee44dbf0c --- /dev/null +++ b/target/linux/generic/backport-4.19/732-v5.5-net-sfp-track-upstream-s-attachment-state-in-state-m.patch @@ -0,0 +1,153 @@ +From ec6036a58f979c66bbd5cd9d0d1c783a98c2c644 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 5 Nov 2019 12:57:40 +0000 +Subject: [PATCH 630/660] net: sfp: track upstream's attachment state in state + machine + +Track the upstream's attachment state in the state machine rather than +maintaining a boolean, which ensures that we have a strict order of +ATTACH followed by an UP event - we can never believe that a newly +attached upstream will be anything but down. + +Rearrange the order of state machines so we run the module state +machine after the upstream device's state machine, so the module state +machine can check the current state of the device and take action to +e.g. reset back to empty state when the upstream is detached. + +This is to allow the module detection to run independently of the +network device becoming available. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 42 +++++++++++++++++++++++++++++------------- + 1 file changed, 29 insertions(+), 13 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -34,6 +34,8 @@ enum { + + SFP_E_INSERT = 0, + SFP_E_REMOVE, ++ SFP_E_DEV_ATTACH, ++ SFP_E_DEV_DETACH, + SFP_E_DEV_DOWN, + SFP_E_DEV_UP, + SFP_E_TX_FAULT, +@@ -48,7 +50,8 @@ enum { + SFP_MOD_PRESENT, + SFP_MOD_ERROR, + +- SFP_DEV_DOWN = 0, ++ SFP_DEV_DETACHED = 0, ++ SFP_DEV_DOWN, + SFP_DEV_UP, + + SFP_S_DOWN = 0, +@@ -78,6 +81,7 @@ static const char *mod_state_to_str(unsi + } + + static const char * const dev_state_strings[] = { ++ [SFP_DEV_DETACHED] = "detached", + [SFP_DEV_DOWN] = "down", + [SFP_DEV_UP] = "up", + }; +@@ -92,6 +96,8 @@ static const char *dev_state_to_str(unsi + static const char * const event_strings[] = { + [SFP_E_INSERT] = "insert", + [SFP_E_REMOVE] = "remove", ++ [SFP_E_DEV_ATTACH] = "dev_attach", ++ [SFP_E_DEV_DETACH] = "dev_detach", + [SFP_E_DEV_DOWN] = "dev_down", + [SFP_E_DEV_UP] = "dev_up", + [SFP_E_TX_FAULT] = "tx_fault", +@@ -186,7 +192,6 @@ struct sfp { + struct gpio_desc *gpio[GPIO_MAX]; + int gpio_irq[GPIO_MAX]; + +- bool attached; + struct mutex st_mutex; /* Protects state */ + unsigned int state; + struct delayed_work poll; +@@ -1494,17 +1499,26 @@ static void sfp_sm_mod_remove(struct sfp + dev_info(sfp->dev, "module removed\n"); + } + +-/* This state machine tracks the netdev up/down state */ ++/* This state machine tracks the upstream's state */ + static void sfp_sm_device(struct sfp *sfp, unsigned int event) + { + switch (sfp->sm_dev_state) { + default: +- if (event == SFP_E_DEV_UP) ++ if (event == SFP_E_DEV_ATTACH) ++ sfp->sm_dev_state = SFP_DEV_DOWN; ++ break; ++ ++ case SFP_DEV_DOWN: ++ if (event == SFP_E_DEV_DETACH) ++ sfp->sm_dev_state = SFP_DEV_DETACHED; ++ else if (event == SFP_E_DEV_UP) + sfp->sm_dev_state = SFP_DEV_UP; + break; + + case SFP_DEV_UP: +- if (event == SFP_E_DEV_DOWN) ++ if (event == SFP_E_DEV_DETACH) ++ sfp->sm_dev_state = SFP_DEV_DETACHED; ++ else if (event == SFP_E_DEV_DOWN) + sfp->sm_dev_state = SFP_DEV_DOWN; + break; + } +@@ -1515,17 +1529,20 @@ static void sfp_sm_device(struct sfp *sf + */ + static void sfp_sm_module(struct sfp *sfp, unsigned int event) + { +- /* Handle remove event globally, it resets this state machine */ +- if (event == SFP_E_REMOVE) { ++ /* Handle remove event globally, it resets this state machine. ++ * Also deal with upstream detachment. ++ */ ++ if (event == SFP_E_REMOVE || sfp->sm_dev_state < SFP_DEV_DOWN) { + if (sfp->sm_mod_state > SFP_MOD_PROBE) + sfp_sm_mod_remove(sfp); +- sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); ++ if (sfp->sm_mod_state != SFP_MOD_EMPTY) ++ sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); + return; + } + + switch (sfp->sm_mod_state) { + default: +- if (event == SFP_E_INSERT && sfp->attached) ++ if (event == SFP_E_INSERT) + sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL); + break; + +@@ -1691,8 +1708,8 @@ static void sfp_sm_event(struct sfp *sfp + sm_state_to_str(sfp->sm_state), + event_to_str(event)); + +- sfp_sm_module(sfp, event); + sfp_sm_device(sfp, event); ++ sfp_sm_module(sfp, event); + sfp_sm_main(sfp, event); + + dev_dbg(sfp->dev, "SM: exit %s:%s:%s\n", +@@ -1705,15 +1722,14 @@ static void sfp_sm_event(struct sfp *sfp + + static void sfp_attach(struct sfp *sfp) + { +- sfp->attached = true; ++ sfp_sm_event(sfp, SFP_E_DEV_ATTACH); + if (sfp->state & SFP_F_PRESENT) + sfp_sm_event(sfp, SFP_E_INSERT); + } + + static void sfp_detach(struct sfp *sfp) + { +- sfp->attached = false; +- sfp_sm_event(sfp, SFP_E_REMOVE); ++ sfp_sm_event(sfp, SFP_E_DEV_DETACH); + } + + static void sfp_start(struct sfp *sfp) diff --git a/target/linux/generic/backport-4.19/733-v5.5-net-sfp-split-power-mode-switching-from-probe.patch b/target/linux/generic/backport-4.19/733-v5.5-net-sfp-split-power-mode-switching-from-probe.patch new file mode 100644 index 0000000000..06b3cb5428 --- /dev/null +++ b/target/linux/generic/backport-4.19/733-v5.5-net-sfp-split-power-mode-switching-from-probe.patch @@ -0,0 +1,184 @@ +From fdff863a4ce3677907f64396e34c45025abb6600 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 5 Nov 2019 12:59:36 +0000 +Subject: [PATCH 631/660] net: sfp: split power mode switching from probe + +Switch the power mode switching from the probe, so that we don't +repeatedly re-probe the SFP device if there is a problem accessing +the registers at I2C address 0x51. + +In splitting this out, we can also fix a bug where we leave the module +in high-power mode when the upstream device is detached but the module +is still inserted. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 101 ++++++++++++++++++++++++++---------------- + 1 file changed, 64 insertions(+), 37 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -47,6 +47,7 @@ enum { + SFP_MOD_EMPTY = 0, + SFP_MOD_PROBE, + SFP_MOD_HPOWER, ++ SFP_MOD_WAITPWR, + SFP_MOD_PRESENT, + SFP_MOD_ERROR, + +@@ -69,6 +70,7 @@ static const char * const mod_state_str + [SFP_MOD_EMPTY] = "empty", + [SFP_MOD_PROBE] = "probe", + [SFP_MOD_HPOWER] = "hpower", ++ [SFP_MOD_WAITPWR] = "waitpwr", + [SFP_MOD_PRESENT] = "present", + [SFP_MOD_ERROR] = "error", + }; +@@ -1358,37 +1360,34 @@ static int sfp_module_parse_power(struct + return 0; + } + +-static int sfp_sm_mod_hpower(struct sfp *sfp) ++static int sfp_sm_mod_hpower(struct sfp *sfp, bool enable) + { + u8 val; + int err; + +- if (sfp->module_power_mW <= 1000) +- return 0; +- + err = sfp_read(sfp, true, SFP_EXT_STATUS, &val, sizeof(val)); + if (err != sizeof(val)) { + dev_err(sfp->dev, "Failed to read EEPROM: %d\n", err); +- err = -EAGAIN; +- goto err; ++ return -EAGAIN; + } + +- val |= BIT(0); ++ if (enable) ++ val |= BIT(0); ++ else ++ val &= ~BIT(0); + + err = sfp_write(sfp, true, SFP_EXT_STATUS, &val, sizeof(val)); + if (err != sizeof(val)) { + dev_err(sfp->dev, "Failed to write EEPROM: %d\n", err); +- err = -EAGAIN; +- goto err; ++ return -EAGAIN; + } + +- dev_info(sfp->dev, "Module switched to %u.%uW power level\n", +- sfp->module_power_mW / 1000, +- (sfp->module_power_mW / 100) % 10); +- return T_HPOWER_LEVEL; ++ if (enable) ++ dev_info(sfp->dev, "Module switched to %u.%uW power level\n", ++ sfp->module_power_mW / 1000, ++ (sfp->module_power_mW / 100) % 10); + +-err: +- return err; ++ return 0; + } + + static int sfp_sm_mod_probe(struct sfp *sfp) +@@ -1484,7 +1483,7 @@ static int sfp_sm_mod_probe(struct sfp * + if (ret < 0) + return ret; + +- return sfp_sm_mod_hpower(sfp); ++ return 0; + } + + static void sfp_sm_mod_remove(struct sfp *sfp) +@@ -1529,13 +1528,22 @@ static void sfp_sm_device(struct sfp *sf + */ + static void sfp_sm_module(struct sfp *sfp, unsigned int event) + { +- /* Handle remove event globally, it resets this state machine. +- * Also deal with upstream detachment. +- */ +- if (event == SFP_E_REMOVE || sfp->sm_dev_state < SFP_DEV_DOWN) { ++ int err; ++ ++ /* Handle remove event globally, it resets this state machine */ ++ if (event == SFP_E_REMOVE) { + if (sfp->sm_mod_state > SFP_MOD_PROBE) + sfp_sm_mod_remove(sfp); +- if (sfp->sm_mod_state != SFP_MOD_EMPTY) ++ sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); ++ return; ++ } ++ ++ /* Handle device detach globally */ ++ if (sfp->sm_dev_state < SFP_DEV_DOWN) { ++ if (sfp->module_power_mW > 1000 && ++ sfp->sm_mod_state > SFP_MOD_HPOWER) ++ sfp_sm_mod_hpower(sfp, false); ++ if (sfp->sm_mod_state > SFP_MOD_EMPTY) + sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); + return; + } +@@ -1547,26 +1555,45 @@ static void sfp_sm_module(struct sfp *sf + break; + + case SFP_MOD_PROBE: +- if (event == SFP_E_TIMEOUT) { +- int val = sfp_sm_mod_probe(sfp); ++ if (event != SFP_E_TIMEOUT) ++ break; + +- if (val == 0) +- sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0); +- else if (val > 0) +- sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, val); +- else if (val != -EAGAIN) +- sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); +- else +- sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ err = sfp_sm_mod_probe(sfp); ++ if (err == -EAGAIN) { ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ break; + } +- break; ++ if (err < 0) { ++ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); ++ break; ++ } ++ ++ /* If this is a power level 1 module, we are done */ ++ if (sfp->module_power_mW <= 1000) ++ goto insert; + ++ sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, 0); ++ /* fall through */ + case SFP_MOD_HPOWER: +- if (event == SFP_E_TIMEOUT) { +- sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0); ++ /* Enable high power mode */ ++ err = sfp_sm_mod_hpower(sfp, true); ++ if (err == 0) ++ sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL); ++ else if (err != -EAGAIN) ++ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); ++ else ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ break; ++ ++ case SFP_MOD_WAITPWR: ++ /* Wait for T_HPOWER_LEVEL to time out */ ++ if (event != SFP_E_TIMEOUT) + break; +- } +- /* fallthrough */ ++ ++ insert: ++ sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0); ++ break; ++ + case SFP_MOD_PRESENT: + case SFP_MOD_ERROR: + break; diff --git a/target/linux/generic/backport-4.19/734-v5.5-net-sfp-move-module-insert-reporting-out-of-probe.patch b/target/linux/generic/backport-4.19/734-v5.5-net-sfp-move-module-insert-reporting-out-of-probe.patch new file mode 100644 index 0000000000..26b6a6b0e4 --- /dev/null +++ b/target/linux/generic/backport-4.19/734-v5.5-net-sfp-move-module-insert-reporting-out-of-probe.patch @@ -0,0 +1,159 @@ +From 57cbf7453551db1df619b79410d79fc418d862d5 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 5 Nov 2019 13:00:45 +0000 +Subject: [PATCH 632/660] net: sfp: move module insert reporting out of probe + +Move the module insertion reporting out of the probe handling, but +after we have detected that the upstream has attached (since that is +whom we are reporting insertion to.) + +Only report module removal if we had previously reported a module +insertion. + +This gives cleaner semantics, and means we can probe the module before +we have an upstream attached. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 58 +++++++++++++++++++++++++++++-------------- + 1 file changed, 40 insertions(+), 18 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -45,11 +45,12 @@ enum { + SFP_E_TIMEOUT, + + SFP_MOD_EMPTY = 0, ++ SFP_MOD_ERROR, + SFP_MOD_PROBE, ++ SFP_MOD_WAITDEV, + SFP_MOD_HPOWER, + SFP_MOD_WAITPWR, + SFP_MOD_PRESENT, +- SFP_MOD_ERROR, + + SFP_DEV_DETACHED = 0, + SFP_DEV_DOWN, +@@ -68,11 +69,12 @@ enum { + + static const char * const mod_state_strings[] = { + [SFP_MOD_EMPTY] = "empty", ++ [SFP_MOD_ERROR] = "error", + [SFP_MOD_PROBE] = "probe", ++ [SFP_MOD_WAITDEV] = "waitdev", + [SFP_MOD_HPOWER] = "hpower", + [SFP_MOD_WAITPWR] = "waitpwr", + [SFP_MOD_PRESENT] = "present", +- [SFP_MOD_ERROR] = "error", + }; + + static const char *mod_state_to_str(unsigned short mod_state) +@@ -1479,16 +1481,13 @@ static int sfp_sm_mod_probe(struct sfp * + if (ret < 0) + return ret; + +- ret = sfp_module_insert(sfp->sfp_bus, &sfp->id); +- if (ret < 0) +- return ret; +- + return 0; + } + + static void sfp_sm_mod_remove(struct sfp *sfp) + { +- sfp_module_remove(sfp->sfp_bus); ++ if (sfp->sm_mod_state > SFP_MOD_WAITDEV) ++ sfp_module_remove(sfp->sfp_bus); + + sfp_hwmon_remove(sfp); + +@@ -1539,12 +1538,12 @@ static void sfp_sm_module(struct sfp *sf + } + + /* Handle device detach globally */ +- if (sfp->sm_dev_state < SFP_DEV_DOWN) { ++ if (sfp->sm_dev_state < SFP_DEV_DOWN && ++ sfp->sm_mod_state > SFP_MOD_WAITDEV) { + if (sfp->module_power_mW > 1000 && + sfp->sm_mod_state > SFP_MOD_HPOWER) + sfp_sm_mod_hpower(sfp, false); +- if (sfp->sm_mod_state > SFP_MOD_EMPTY) +- sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); ++ sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0); + return; + } + +@@ -1555,6 +1554,7 @@ static void sfp_sm_module(struct sfp *sf + break; + + case SFP_MOD_PROBE: ++ /* Wait for T_PROBE_INIT to time out */ + if (event != SFP_E_TIMEOUT) + break; + +@@ -1568,6 +1568,20 @@ static void sfp_sm_module(struct sfp *sf + break; + } + ++ sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0); ++ /* fall through */ ++ case SFP_MOD_WAITDEV: ++ /* Ensure that the device is attached before proceeding */ ++ if (sfp->sm_dev_state < SFP_DEV_DOWN) ++ break; ++ ++ /* Report the module insertion to the upstream device */ ++ err = sfp_module_insert(sfp->sfp_bus, &sfp->id); ++ if (err < 0) { ++ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); ++ break; ++ } ++ + /* If this is a power level 1 module, we are done */ + if (sfp->module_power_mW <= 1000) + goto insert; +@@ -1577,12 +1591,17 @@ static void sfp_sm_module(struct sfp *sf + case SFP_MOD_HPOWER: + /* Enable high power mode */ + err = sfp_sm_mod_hpower(sfp, true); +- if (err == 0) +- sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL); +- else if (err != -EAGAIN) +- sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); +- else +- sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ if (err < 0) { ++ if (err != -EAGAIN) { ++ sfp_module_remove(sfp->sfp_bus); ++ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); ++ } else { ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ } ++ break; ++ } ++ ++ sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL); + break; + + case SFP_MOD_WAITPWR: +@@ -1750,8 +1769,6 @@ static void sfp_sm_event(struct sfp *sfp + static void sfp_attach(struct sfp *sfp) + { + sfp_sm_event(sfp, SFP_E_DEV_ATTACH); +- if (sfp->state & SFP_F_PRESENT) +- sfp_sm_event(sfp, SFP_E_INSERT); + } + + static void sfp_detach(struct sfp *sfp) +@@ -2001,6 +2018,11 @@ static int sfp_probe(struct platform_dev + sfp->state |= SFP_F_RATE_SELECT; + sfp_set_state(sfp, sfp->state); + sfp_module_tx_disable(sfp); ++ if (sfp->state & SFP_F_PRESENT) { ++ rtnl_lock(); ++ sfp_sm_event(sfp, SFP_E_INSERT); ++ rtnl_unlock(); ++ } + + for (i = 0; i < GPIO_MAX; i++) { + if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i]) diff --git a/target/linux/generic/backport-4.19/735-v5.5-net-sfp-allow-sfp-to-probe-slow-to-initialise-GPON-m.patch b/target/linux/generic/backport-4.19/735-v5.5-net-sfp-allow-sfp-to-probe-slow-to-initialise-GPON-m.patch new file mode 100644 index 0000000000..6cbd0864f7 --- /dev/null +++ b/target/linux/generic/backport-4.19/735-v5.5-net-sfp-allow-sfp-to-probe-slow-to-initialise-GPON-m.patch @@ -0,0 +1,110 @@ +From fb56cd08880aff8fb030e684fa4311bef712a499 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 5 Nov 2019 13:02:30 +0000 +Subject: [PATCH 633/660] net: sfp: allow sfp to probe slow to initialise GPON + modules + +Some GPON modules (e.g. Huawei MA5671A) take a significant amount of +time to start responding on the I2C bus, contary to the SFF +specifications. + +Work around this by implementing a two-level timeout strategy, where +we initially quickly retry for the module, and then use a slower retry +after we exceed a maximum number of quick attempts. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 38 ++++++++++++++++++++++++++++---------- + 1 file changed, 28 insertions(+), 10 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -165,9 +165,12 @@ static const enum gpiod_flags gpio_flags + * The SFF-8472 specifies t_serial ("Time from power on until module is + * ready for data transmission over the two wire serial bus.") as 300ms. + */ +-#define T_SERIAL msecs_to_jiffies(300) +-#define T_HPOWER_LEVEL msecs_to_jiffies(300) +-#define T_PROBE_RETRY msecs_to_jiffies(100) ++#define T_SERIAL msecs_to_jiffies(300) ++#define T_HPOWER_LEVEL msecs_to_jiffies(300) ++#define T_PROBE_RETRY_INIT msecs_to_jiffies(100) ++#define R_PROBE_RETRY_INIT 10 ++#define T_PROBE_RETRY_SLOW msecs_to_jiffies(5000) ++#define R_PROBE_RETRY_SLOW 12 + + /* SFP modules appear to always have their PHY configured for bus address + * 0x56 (which with mdio-i2c, translates to a PHY address of 22). +@@ -202,6 +205,8 @@ struct sfp { + struct delayed_work timeout; + struct mutex sm_mutex; /* Protects state machine */ + unsigned char sm_mod_state; ++ unsigned char sm_mod_tries_init; ++ unsigned char sm_mod_tries; + unsigned char sm_dev_state; + unsigned short sm_state; + unsigned int sm_retries; +@@ -1392,7 +1397,7 @@ static int sfp_sm_mod_hpower(struct sfp + return 0; + } + +-static int sfp_sm_mod_probe(struct sfp *sfp) ++static int sfp_sm_mod_probe(struct sfp *sfp, bool report) + { + /* SFP module inserted - read I2C data */ + struct sfp_eeprom_id id; +@@ -1402,7 +1407,8 @@ static int sfp_sm_mod_probe(struct sfp * + + ret = sfp_read(sfp, false, 0, &id, sizeof(id)); + if (ret < 0) { +- dev_err(sfp->dev, "failed to read EEPROM: %d\n", ret); ++ if (report) ++ dev_err(sfp->dev, "failed to read EEPROM: %d\n", ret); + return -EAGAIN; + } + +@@ -1549,8 +1555,11 @@ static void sfp_sm_module(struct sfp *sf + + switch (sfp->sm_mod_state) { + default: +- if (event == SFP_E_INSERT) ++ if (event == SFP_E_INSERT) { + sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL); ++ sfp->sm_mod_tries_init = R_PROBE_RETRY_INIT; ++ sfp->sm_mod_tries = R_PROBE_RETRY_SLOW; ++ } + break; + + case SFP_MOD_PROBE: +@@ -1558,10 +1567,19 @@ static void sfp_sm_module(struct sfp *sf + if (event != SFP_E_TIMEOUT) + break; + +- err = sfp_sm_mod_probe(sfp); ++ err = sfp_sm_mod_probe(sfp, sfp->sm_mod_tries == 1); + if (err == -EAGAIN) { +- sfp_sm_set_timer(sfp, T_PROBE_RETRY); +- break; ++ if (sfp->sm_mod_tries_init && ++ --sfp->sm_mod_tries_init) { ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY_INIT); ++ break; ++ } else if (sfp->sm_mod_tries && --sfp->sm_mod_tries) { ++ if (sfp->sm_mod_tries == R_PROBE_RETRY_SLOW - 1) ++ dev_warn(sfp->dev, ++ "please wait, module slow to respond\n"); ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY_SLOW); ++ break; ++ } + } + if (err < 0) { + sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); +@@ -1596,7 +1614,7 @@ static void sfp_sm_module(struct sfp *sf + sfp_module_remove(sfp->sfp_bus); + sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); + } else { +- sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY_INIT); + } + break; + } diff --git a/target/linux/generic/backport-4.19/736-v5.5-net-sfp-allow-modules-with-slow-diagnostics-to-probe.patch b/target/linux/generic/backport-4.19/736-v5.5-net-sfp-allow-modules-with-slow-diagnostics-to-probe.patch new file mode 100644 index 0000000000..fe1e6c4822 --- /dev/null +++ b/target/linux/generic/backport-4.19/736-v5.5-net-sfp-allow-modules-with-slow-diagnostics-to-probe.patch @@ -0,0 +1,198 @@ +From 559391fc20fae506adcb311b904cc544c76436c0 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Thu, 7 Nov 2019 18:52:07 +0000 +Subject: [PATCH 634/660] net: sfp: allow modules with slow diagnostics to + probe + +When a module is inserted, we attempt to read read the ID from address +0x50. Once we are able to read the ID, we immediately attempt to +initialise the hwmon support by reading from address 0x51. If this +fails, then we fall into error state, and assume that the module is +not usable. + +Modules such as the ALCATELLUCENT 3FE46541AA use a real EEPROM for +I2C address 0x50, which responds immediately. However, address 0x51 +is an emulated, which only becomes available once the on-board firmware +has booted. This prompts us to fall into the error state. + +Since the module may be usable without diagnostics, arrange for the +hwmon probe independent of the rest of the SFP itself, retrying every +5s for up to about 60s for the monitoring to become available, and +print an error message if it doesn't become available. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 96 +++++++++++++++++++++++++++++++++---------- + 1 file changed, 74 insertions(+), 22 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -216,6 +216,8 @@ struct sfp { + + #if IS_ENABLED(CONFIG_HWMON) + struct sfp_diag diag; ++ struct delayed_work hwmon_probe; ++ unsigned int hwmon_tries; + struct device *hwmon_dev; + char *hwmon_name; + #endif +@@ -1094,29 +1096,27 @@ static const struct hwmon_chip_info sfp_ + .info = sfp_hwmon_info, + }; + +-static int sfp_hwmon_insert(struct sfp *sfp) ++static void sfp_hwmon_probe(struct work_struct *work) + { ++ struct sfp *sfp = container_of(work, struct sfp, hwmon_probe.work); + int err, i; + +- if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE) +- return 0; +- +- if (!(sfp->id.ext.diagmon & SFP_DIAGMON_DDM)) +- return 0; +- +- if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE) +- /* This driver in general does not support address +- * change. +- */ +- return 0; +- + err = sfp_read(sfp, true, 0, &sfp->diag, sizeof(sfp->diag)); +- if (err < 0) +- return err; ++ if (err < 0) { ++ if (sfp->hwmon_tries--) { ++ mod_delayed_work(system_wq, &sfp->hwmon_probe, ++ T_PROBE_RETRY_SLOW); ++ } else { ++ dev_warn(sfp->dev, "hwmon probe failed: %d\n", err); ++ } ++ return; ++ } + + sfp->hwmon_name = kstrdup(dev_name(sfp->dev), GFP_KERNEL); +- if (!sfp->hwmon_name) +- return -ENODEV; ++ if (!sfp->hwmon_name) { ++ dev_err(sfp->dev, "out of memory for hwmon name\n"); ++ return; ++ } + + for (i = 0; sfp->hwmon_name[i]; i++) + if (hwmon_is_bad_char(sfp->hwmon_name[i])) +@@ -1126,18 +1126,52 @@ static int sfp_hwmon_insert(struct sfp * + sfp->hwmon_name, sfp, + &sfp_hwmon_chip_info, + NULL); ++ if (IS_ERR(sfp->hwmon_dev)) ++ dev_err(sfp->dev, "failed to register hwmon device: %ld\n", ++ PTR_ERR(sfp->hwmon_dev)); ++} ++ ++static int sfp_hwmon_insert(struct sfp *sfp) ++{ ++ if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE) ++ return 0; ++ ++ if (!(sfp->id.ext.diagmon & SFP_DIAGMON_DDM)) ++ return 0; ++ ++ if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE) ++ /* This driver in general does not support address ++ * change. ++ */ ++ return 0; ++ ++ mod_delayed_work(system_wq, &sfp->hwmon_probe, 1); ++ sfp->hwmon_tries = R_PROBE_RETRY_SLOW; + +- return PTR_ERR_OR_ZERO(sfp->hwmon_dev); ++ return 0; + } + + static void sfp_hwmon_remove(struct sfp *sfp) + { ++ cancel_delayed_work_sync(&sfp->hwmon_probe); + if (!IS_ERR_OR_NULL(sfp->hwmon_dev)) { + hwmon_device_unregister(sfp->hwmon_dev); + sfp->hwmon_dev = NULL; + kfree(sfp->hwmon_name); + } + } ++ ++static int sfp_hwmon_init(struct sfp *sfp) ++{ ++ INIT_DELAYED_WORK(&sfp->hwmon_probe, sfp_hwmon_probe); ++ ++ return 0; ++} ++ ++static void sfp_hwmon_exit(struct sfp *sfp) ++{ ++ cancel_delayed_work_sync(&sfp->hwmon_probe); ++} + #else + static int sfp_hwmon_insert(struct sfp *sfp) + { +@@ -1147,6 +1181,15 @@ static int sfp_hwmon_insert(struct sfp * + static void sfp_hwmon_remove(struct sfp *sfp) + { + } ++ ++static int sfp_hwmon_init(struct sfp *sfp) ++{ ++ return 0; ++} ++ ++static void sfp_hwmon_exit(struct sfp *sfp) ++{ ++} + #endif + + /* Helpers */ +@@ -1483,10 +1526,6 @@ static int sfp_sm_mod_probe(struct sfp * + if (ret < 0) + return ret; + +- ret = sfp_hwmon_insert(sfp); +- if (ret < 0) +- return ret; +- + return 0; + } + +@@ -1635,6 +1674,15 @@ static void sfp_sm_module(struct sfp *sf + case SFP_MOD_ERROR: + break; + } ++ ++#if IS_ENABLED(CONFIG_HWMON) ++ if (sfp->sm_mod_state >= SFP_MOD_WAITDEV && ++ IS_ERR_OR_NULL(sfp->hwmon_dev)) { ++ err = sfp_hwmon_insert(sfp); ++ if (err) ++ dev_warn(sfp->dev, "hwmon probe failed: %d\n", err); ++ } ++#endif + } + + static void sfp_sm_main(struct sfp *sfp, unsigned int event) +@@ -1936,6 +1984,8 @@ static struct sfp *sfp_alloc(struct devi + INIT_DELAYED_WORK(&sfp->poll, sfp_poll); + INIT_DELAYED_WORK(&sfp->timeout, sfp_timeout); + ++ sfp_hwmon_init(sfp); ++ + return sfp; + } + +@@ -1943,6 +1993,8 @@ static void sfp_cleanup(void *data) + { + struct sfp *sfp = data; + ++ sfp_hwmon_exit(sfp); ++ + cancel_delayed_work_sync(&sfp->poll); + cancel_delayed_work_sync(&sfp->timeout); + if (sfp->i2c_mii) { diff --git a/target/linux/generic/backport-4.19/737-v5.5-net-phy-add-core-phylib-sfp-support.patch b/target/linux/generic/backport-4.19/737-v5.5-net-phy-add-core-phylib-sfp-support.patch new file mode 100644 index 0000000000..8dcad2fa58 --- /dev/null +++ b/target/linux/generic/backport-4.19/737-v5.5-net-phy-add-core-phylib-sfp-support.patch @@ -0,0 +1,183 @@ +From eb156db588ac583cdae7b91eaac9c0ad3a358e63 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Sun, 15 Sep 2019 20:05:34 +0100 +Subject: [PATCH 635/660] net: phy: add core phylib sfp support + +Add core phylib help for supporting SFP sockets on PHYs. This provides +a mechanism to inform the SFP layer about PHY up/down events, and also +unregister the SFP bus when the PHY is going away. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy.c | 7 ++++ + drivers/net/phy/phy_device.c | 66 ++++++++++++++++++++++++++++++++++++ + include/linux/phy.h | 11 ++++++ + 3 files changed, 84 insertions(+) + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -30,6 +30,7 @@ + #include <linux/ethtool.h> + #include <linux/phy.h> + #include <linux/phy_led_triggers.h> ++#include <linux/sfp.h> + #include <linux/workqueue.h> + #include <linux/mdio.h> + #include <linux/io.h> +@@ -871,6 +872,9 @@ void phy_stop(struct phy_device *phydev) + if (phy_interrupt_is_valid(phydev)) + phy_disable_interrupts(phydev); + ++ if (phydev->sfp_bus) ++ sfp_upstream_stop(phydev->sfp_bus); ++ + phydev->state = PHY_HALTED; + + out_unlock: +@@ -899,6 +903,9 @@ void phy_start(struct phy_device *phydev + + mutex_lock(&phydev->lock); + ++ if (phydev->sfp_bus) ++ sfp_upstream_start(phydev->sfp_bus); ++ + switch (phydev->state) { + case PHY_STARTING: + phydev->state = PHY_PENDING; +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -31,6 +31,7 @@ + #include <linux/ethtool.h> + #include <linux/phy.h> + #include <linux/phy_led_triggers.h> ++#include <linux/sfp.h> + #include <linux/mdio.h> + #include <linux/io.h> + #include <linux/uaccess.h> +@@ -943,6 +944,65 @@ void phy_attached_print(struct phy_devic + EXPORT_SYMBOL(phy_attached_print); + + /** ++ * phy_sfp_attach - attach the SFP bus to the PHY upstream network device ++ * @upstream: pointer to the phy device ++ * @bus: sfp bus representing cage being attached ++ * ++ * This is used to fill in the sfp_upstream_ops .attach member. ++ */ ++void phy_sfp_attach(void *upstream, struct sfp_bus *bus) ++{ ++ struct phy_device *phydev = upstream; ++ ++ if (phydev->attached_dev) ++ phydev->attached_dev->sfp_bus = bus; ++ phydev->sfp_bus_attached = true; ++} ++EXPORT_SYMBOL(phy_sfp_attach); ++ ++/** ++ * phy_sfp_detach - detach the SFP bus from the PHY upstream network device ++ * @upstream: pointer to the phy device ++ * @bus: sfp bus representing cage being attached ++ * ++ * This is used to fill in the sfp_upstream_ops .detach member. ++ */ ++void phy_sfp_detach(void *upstream, struct sfp_bus *bus) ++{ ++ struct phy_device *phydev = upstream; ++ ++ if (phydev->attached_dev) ++ phydev->attached_dev->sfp_bus = NULL; ++ phydev->sfp_bus_attached = false; ++} ++EXPORT_SYMBOL(phy_sfp_detach); ++ ++/** ++ * phy_sfp_probe - probe for a SFP cage attached to this PHY device ++ * @phydev: Pointer to phy_device ++ * @ops: SFP's upstream operations ++ */ ++int phy_sfp_probe(struct phy_device *phydev, ++ const struct sfp_upstream_ops *ops) ++{ ++ struct sfp_bus *bus; ++ int ret; ++ ++ if (phydev->mdio.dev.fwnode) { ++ bus = sfp_bus_find_fwnode(phydev->mdio.dev.fwnode); ++ if (IS_ERR(bus)) ++ return PTR_ERR(bus); ++ ++ phydev->sfp_bus = bus; ++ ++ ret = sfp_bus_add_upstream(bus, phydev, ops); ++ sfp_bus_put(bus); ++ } ++ return 0; ++} ++EXPORT_SYMBOL(phy_sfp_probe); ++ ++/** + * phy_attach_direct - attach a network device to a given PHY device pointer + * @dev: network device to attach + * @phydev: Pointer to phy_device to attach +@@ -1015,6 +1075,9 @@ int phy_attach_direct(struct net_device + phydev->attached_dev = dev; + dev->phydev = phydev; + ++ if (phydev->sfp_bus_attached) ++ dev->sfp_bus = phydev->sfp_bus; ++ + /* Some Ethernet drivers try to connect to a PHY device before + * calling register_netdevice() -> netdev_register_kobject() and + * does the dev->dev.kobj initialization. Here we only check for +@@ -1949,6 +2012,9 @@ static int phy_remove(struct device *dev + phydev->state = PHY_DOWN; + mutex_unlock(&phydev->lock); + ++ sfp_bus_del_upstream(phydev->sfp_bus); ++ phydev->sfp_bus = NULL; ++ + if (phydev->drv && phydev->drv->remove) { + phydev->drv->remove(phydev); + +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -184,6 +184,8 @@ static inline const char *phy_modes(phy_ + + struct device; + struct phylink; ++struct sfp_bus; ++struct sfp_upstream_ops; + struct sk_buff; + + /* +@@ -382,6 +384,8 @@ struct phy_c45_device_ids { + * irq: IRQ number of the PHY's interrupt (-1 if none) + * phy_timer: The timer for handling the state machine + * phy_queue: A work_queue for the phy_mac_interrupt ++ * sfp_bus_attached: flag indicating whether the SFP bus has been attached ++ * sfp_bus: SFP bus attached to this PHY's fiber port + * attached_dev: The attached enet driver's device instance ptr + * adjust_link: Callback for the enet controller to respond to + * changes in the link state. +@@ -471,6 +475,9 @@ struct phy_device { + + struct mutex lock; + ++ /* This may be modified under the rtnl lock */ ++ bool sfp_bus_attached; ++ struct sfp_bus *sfp_bus; + struct phylink *phylink; + struct net_device *attached_dev; + +@@ -1031,6 +1038,10 @@ int phy_suspend(struct phy_device *phyde + int phy_resume(struct phy_device *phydev); + int __phy_resume(struct phy_device *phydev); + int phy_loopback(struct phy_device *phydev, bool enable); ++void phy_sfp_attach(void *upstream, struct sfp_bus *bus); ++void phy_sfp_detach(void *upstream, struct sfp_bus *bus); ++int phy_sfp_probe(struct phy_device *phydev, ++ const struct sfp_upstream_ops *ops); + struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, + phy_interface_t interface); + struct phy_device *phy_find_first(struct mii_bus *bus); diff --git a/target/linux/generic/backport-4.19/738-v5.5-net-phy-marvell10g-add-SFP-support.patch b/target/linux/generic/backport-4.19/738-v5.5-net-phy-marvell10g-add-SFP-support.patch new file mode 100644 index 0000000000..a67431ce5c --- /dev/null +++ b/target/linux/generic/backport-4.19/738-v5.5-net-phy-marvell10g-add-SFP-support.patch @@ -0,0 +1,67 @@ +From 0836d9fb41ed90090ef4af0d7abe784ee7706f80 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 14 Apr 2017 14:21:25 +0100 +Subject: [PATCH 636/660] net: phy: marvell10g: add SFP+ support + +Add support for SFP+ cages to the Marvell 10G PHY driver. This is +slightly complicated by the way phylib works in that we need to use +a multi-step process to attach the SFP bus, and we also need to track +the phylink state machine to know when the module's transmit disable +signal should change state. + +With appropriate DT changes, this allows the SFP+ canges on the +Macchiatobin platform to be functional. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/marvell10g.c | 25 ++++++++++++++++++++++++- + 1 file changed, 24 insertions(+), 1 deletion(-) + +--- a/drivers/net/phy/marvell10g.c ++++ b/drivers/net/phy/marvell10g.c +@@ -25,6 +25,7 @@ + #include <linux/hwmon.h> + #include <linux/marvell_phy.h> + #include <linux/phy.h> ++#include <linux/sfp.h> + + enum { + MV_PMA_BOOT = 0xc050, +@@ -219,6 +220,28 @@ static int mv3310_hwmon_probe(struct phy + } + #endif + ++static int mv3310_sfp_insert(void *upstream, const struct sfp_eeprom_id *id) ++{ ++ struct phy_device *phydev = upstream; ++ __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, }; ++ phy_interface_t iface; ++ ++ sfp_parse_support(phydev->sfp_bus, id, support); ++ iface = sfp_select_interface(phydev->sfp_bus, id, support); ++ ++ if (iface != PHY_INTERFACE_MODE_10GKR) { ++ dev_err(&phydev->mdio.dev, "incompatible SFP module inserted\n"); ++ return -EINVAL; ++ } ++ return 0; ++} ++ ++static const struct sfp_upstream_ops mv3310_sfp_ops = { ++ .attach = phy_sfp_attach, ++ .detach = phy_sfp_detach, ++ .module_insert = mv3310_sfp_insert, ++}; ++ + static int mv3310_probe(struct phy_device *phydev) + { + struct mv3310_priv *priv; +@@ -249,7 +272,7 @@ static int mv3310_probe(struct phy_devic + if (ret) + return ret; + +- return 0; ++ return phy_sfp_probe(phydev, &mv3310_sfp_ops); + } + + static int mv3310_suspend(struct phy_device *phydev) diff --git a/target/linux/generic/backport-4.19/739-v5.5-net-phylink-update-to-use-phy_support_asym_pause.patch b/target/linux/generic/backport-4.19/739-v5.5-net-phylink-update-to-use-phy_support_asym_pause.patch new file mode 100644 index 0000000000..15db0abc96 --- /dev/null +++ b/target/linux/generic/backport-4.19/739-v5.5-net-phylink-update-to-use-phy_support_asym_pause.patch @@ -0,0 +1,45 @@ +From 09d7d8395ec61fba4392b35baa6f71c4e36489df Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 8 Nov 2019 15:18:02 +0000 +Subject: [PATCH 637/660] net: phylink: update to use phy_support_asym_pause() + +Use phy_support_asym_pause() rather than open-coding it. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 17 +++++++---------- + 1 file changed, 7 insertions(+), 10 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -678,12 +678,6 @@ static int phylink_bringup_phy(struct ph + u32 advertising; + int ret; + +- memset(&config, 0, sizeof(config)); +- ethtool_convert_legacy_u32_to_link_mode(supported, phy->supported); +- ethtool_convert_legacy_u32_to_link_mode(config.advertising, +- phy->advertising); +- config.interface = pl->link_config.interface; +- + /* + * This is the new way of dealing with flow control for PHYs, + * as described by Timur Tabi in commit 529ed1275263 ("net: phy: +@@ -691,10 +685,13 @@ static int phylink_bringup_phy(struct ph + * using our validate call to the MAC, we rely upon the MAC + * clearing the bits from both supported and advertising fields. + */ +- if (phylink_test(supported, Pause)) +- phylink_set(config.advertising, Pause); +- if (phylink_test(supported, Asym_Pause)) +- phylink_set(config.advertising, Asym_Pause); ++ phy_support_asym_pause(phy); ++ ++ memset(&config, 0, sizeof(config)); ++ ethtool_convert_legacy_u32_to_link_mode(supported, phy->supported); ++ ethtool_convert_legacy_u32_to_link_mode(config.advertising, ++ phy->advertising); ++ config.interface = pl->link_config.interface; + + ret = phylink_validate(pl, supported, &config); + if (ret) diff --git a/target/linux/generic/backport-4.19/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch b/target/linux/generic/backport-4.19/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch new file mode 100644 index 0000000000..d6c0120197 --- /dev/null +++ b/target/linux/generic/backport-4.19/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch @@ -0,0 +1,63 @@ +From 1be8018db381200c24854e0c299206c557f76fe0 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Mon, 11 Nov 2019 11:58:09 +0000 +Subject: [PATCH 638/660] net: phy: avoid matching all-ones clause 45 PHY IDs + +We currently match clause 45 PHYs using any ID read from a MMD marked +as present in the "Devices in package" registers 5 and 6. However, +this is incorrect. 45.2 says: + + "The definition of the term package is vendor specific and could be + a chip, module, or other similar entity." + +so a package could be more or less than the whole PHY - a PHY could be +made up of several modules instantiated onto a single chip such as the +Marvell 88x3310, or some of the MMDs could be disabled according to +chip configuration, such as the Broadcom 84881. + +In the case of Broadcom 84881, the "Devices in package" registers +contain 0xc000009b, meaning that there is a PHYXS present in the +package, but all registers in MMD 4 return 0xffff. This leads to our +matching code incorrectly binding this PHY to one of our generic PHY +drivers. + +This patch changes the way we determine whether to attempt to match a +MMD identifier, or use it to request a module - if the identifier is +all-ones, then we skip over it. When reading the identifiers, we +initialise phydev->c45_ids.device_ids to all-ones, only reading the +device ID if the "Devices in package" registers indicates we should. + +This avoids the generic drivers incorrectly matching on a PHY ID of +0xffffffff. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy_device.c | 7 +++++-- + 1 file changed, 5 insertions(+), 2 deletions(-) + +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -334,7 +334,7 @@ static int phy_bus_match(struct device * + + if (phydev->is_c45) { + for (i = 1; i < num_ids; i++) { +- if (!(phydev->c45_ids.devices_in_package & (1 << i))) ++ if (phydev->c45_ids.device_ids[i] == 0xffffffff) + continue; + + if ((phydrv->phy_id & phydrv->phy_id_mask) == +@@ -622,10 +622,13 @@ static int get_phy_id(struct mii_bus *bu + */ + struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) + { +- struct phy_c45_device_ids c45_ids = {0}; ++ struct phy_c45_device_ids c45_ids; + u32 phy_id = 0; + int r; + ++ c45_ids.devices_in_package = 0; ++ memset(c45_ids.device_ids, 0xff, sizeof(c45_ids.device_ids)); ++ + r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids); + if (r) + return ERR_PTR(r); diff --git a/target/linux/generic/backport-4.19/741-v5.5-net-phylink-fix-link-mode-modification-in-PHY-mode.patch b/target/linux/generic/backport-4.19/741-v5.5-net-phylink-fix-link-mode-modification-in-PHY-mode.patch new file mode 100644 index 0000000000..596ecc8272 --- /dev/null +++ b/target/linux/generic/backport-4.19/741-v5.5-net-phylink-fix-link-mode-modification-in-PHY-mode.patch @@ -0,0 +1,66 @@ +From 4c9633f75dc35abe1b9261e0415d77802f35741d Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 5 Nov 2019 11:58:00 +0000 +Subject: [PATCH 639/660] net: phylink: fix link mode modification in PHY mode + +Modifying the link settings via phylink_ethtool_ksettings_set() and +phylink_ethtool_set_pauseparam() didn't always work as intended for +PHY based setups, as calling phylink_mac_config() would result in the +unresolved configuration being committed to the MAC, rather than the +configuration with the speed and duplex setting. + +This would work fine if the update caused the link to renegotiate, +but if no settings have changed, phylib won't trigger a renegotiation +cycle, and the MAC will be left incorrectly configured. + +Avoid calling phylink_mac_config() unless we are using an inband mode +in phylink_ethtool_ksettings_set(), and use phy_set_asym_pause() as +introduced in 4.20 to set the PHY settings in +phylink_ethtool_set_pauseparam(). + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 24 ++++++++++++++++-------- + 1 file changed, 16 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -1210,7 +1210,13 @@ int phylink_ethtool_ksettings_set(struct + pl->link_config.duplex = our_kset.base.duplex; + pl->link_config.an_enabled = our_kset.base.autoneg != AUTONEG_DISABLE; + +- if (!test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) { ++ /* If we have a PHY, phylib will call our link state function if the ++ * mode has changed, which will trigger a resolve and update the MAC ++ * configuration. For a fixed link, this isn't able to change any ++ * parameters, which just leaves inband mode. ++ */ ++ if (pl->link_an_mode == MLO_AN_INBAND && ++ !test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) { + phylink_mac_config(pl, &pl->link_config); + phylink_mac_an_restart(pl); + } +@@ -1290,14 +1296,16 @@ int phylink_ethtool_set_pauseparam(struc + if (pause->tx_pause) + config->pause |= MLO_PAUSE_TX; + +- if (!test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) { ++ /* If we have a PHY, phylib will call our link state function if the ++ * mode has changed, which will trigger a resolve and update the MAC ++ * configuration. ++ */ ++ if (pl->phydev) { ++ phy_set_asym_pause(pl->phydev, pause->rx_pause, ++ pause->tx_pause); ++ } else if (!test_bit(PHYLINK_DISABLE_STOPPED, ++ &pl->phylink_disable_state)) { + switch (pl->link_an_mode) { +- case MLO_AN_PHY: +- /* Silently mark the carrier down, and then trigger a resolve */ +- netif_carrier_off(pl->netdev); +- phylink_run_resolve(pl); +- break; +- + case MLO_AN_FIXED: + /* Should we allow fixed links to change against the config? */ + phylink_resolve_flow(pl, config); diff --git a/target/linux/generic/backport-4.19/742-v5.5-net-sfp-add-support-for-module-quirks.patch b/target/linux/generic/backport-4.19/742-v5.5-net-sfp-add-support-for-module-quirks.patch new file mode 100644 index 0000000000..5068bd468c --- /dev/null +++ b/target/linux/generic/backport-4.19/742-v5.5-net-sfp-add-support-for-module-quirks.patch @@ -0,0 +1,111 @@ +From 8df5dd55cef48c0769379e04dbc085a899b106d4 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 8 Mar 2019 14:02:25 +0000 +Subject: [PATCH 640/660] net: sfp: add support for module quirks + +Add support for applying module quirks to the list of supported +ethtool link modes. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp-bus.c | 54 +++++++++++++++++++++++++++++++++++++++ + 1 file changed, 54 insertions(+) + +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -9,6 +9,12 @@ + + #include "sfp.h" + ++struct sfp_quirk { ++ const char *vendor; ++ const char *part; ++ void (*modes)(const struct sfp_eeprom_id *id, unsigned long *modes); ++}; ++ + /** + * struct sfp_bus - internal representation of a sfp bus + */ +@@ -21,6 +27,7 @@ struct sfp_bus { + const struct sfp_socket_ops *socket_ops; + struct device *sfp_dev; + struct sfp *sfp; ++ const struct sfp_quirk *sfp_quirk; + + const struct sfp_upstream_ops *upstream_ops; + void *upstream; +@@ -30,6 +37,46 @@ struct sfp_bus { + bool started; + }; + ++static const struct sfp_quirk sfp_quirks[] = { ++}; ++ ++static size_t sfp_strlen(const char *str, size_t maxlen) ++{ ++ size_t size, i; ++ ++ /* Trailing characters should be filled with space chars */ ++ for (i = 0, size = 0; i < maxlen; i++) ++ if (str[i] != ' ') ++ size = i + 1; ++ ++ return size; ++} ++ ++static bool sfp_match(const char *qs, const char *str, size_t len) ++{ ++ if (!qs) ++ return true; ++ if (strlen(qs) != len) ++ return false; ++ return !strncmp(qs, str, len); ++} ++ ++static const struct sfp_quirk *sfp_lookup_quirk(const struct sfp_eeprom_id *id) ++{ ++ const struct sfp_quirk *q; ++ unsigned int i; ++ size_t vs, ps; ++ ++ vs = sfp_strlen(id->base.vendor_name, ARRAY_SIZE(id->base.vendor_name)); ++ ps = sfp_strlen(id->base.vendor_pn, ARRAY_SIZE(id->base.vendor_pn)); ++ ++ for (i = 0, q = sfp_quirks; i < ARRAY_SIZE(sfp_quirks); i++, q++) ++ if (sfp_match(q->vendor, id->base.vendor_name, vs) && ++ sfp_match(q->part, id->base.vendor_pn, ps)) ++ return q; ++ ++ return NULL; ++} + /** + * sfp_parse_port() - Parse the EEPROM base ID, setting the port type + * @bus: a pointer to the &struct sfp_bus structure for the sfp module +@@ -233,6 +280,9 @@ void sfp_parse_support(struct sfp_bus *b + phylink_set(modes, 1000baseX_Full); + } + ++ if (bus->sfp_quirk) ++ bus->sfp_quirk->modes(id, modes); ++ + bitmap_or(support, support, modes, __ETHTOOL_LINK_MODE_MASK_NBITS); + + phylink_set(support, Autoneg); +@@ -609,6 +659,8 @@ int sfp_module_insert(struct sfp_bus *bu + const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); + int ret = 0; + ++ bus->sfp_quirk = sfp_lookup_quirk(id); ++ + if (ops && ops->module_insert) + ret = ops->module_insert(bus->upstream, id); + +@@ -622,6 +674,8 @@ void sfp_module_remove(struct sfp_bus *b + + if (ops && ops->module_remove) + ops->module_remove(bus->upstream); ++ ++ bus->sfp_quirk = NULL; + } + EXPORT_SYMBOL_GPL(sfp_module_remove); + diff --git a/target/linux/generic/backport-4.19/743-v5.5-net-sfp-add-some-quirks-for-GPON-modules.patch b/target/linux/generic/backport-4.19/743-v5.5-net-sfp-add-some-quirks-for-GPON-modules.patch new file mode 100644 index 0000000000..10c34881d8 --- /dev/null +++ b/target/linux/generic/backport-4.19/743-v5.5-net-sfp-add-some-quirks-for-GPON-modules.patch @@ -0,0 +1,52 @@ +From ecaa542cfed078dbc356dadff0bad4b6a8e704a0 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 17 May 2019 10:14:45 +0100 +Subject: [PATCH 641/660] net: sfp: add some quirks for GPON modules + +Marc Micalizzi reports that Huawei MA5671A and Alcatel/Lucent G-010S-P +modules are capable of 2500base-X, but incorrectly report their +capabilities in the EEPROM. It seems rather common that GPON modules +mis-report. + +Let's fix these modules by adding some quirks. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp-bus.c | 25 +++++++++++++++++++++++++ + 1 file changed, 25 insertions(+) + +--- a/drivers/net/phy/sfp-bus.c ++++ b/drivers/net/phy/sfp-bus.c +@@ -37,7 +37,32 @@ struct sfp_bus { + bool started; + }; + ++static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id, ++ unsigned long *modes) ++{ ++ phylink_set(modes, 2500baseX_Full); ++} ++ + static const struct sfp_quirk sfp_quirks[] = { ++ { ++ // Alcatel Lucent G-010S-P can operate at 2500base-X, but ++ // incorrectly report 2500MBd NRZ in their EEPROM ++ .vendor = "ALCATELLUCENT", ++ .part = "G010SP", ++ .modes = sfp_quirk_2500basex, ++ }, { ++ // Alcatel Lucent G-010S-A can operate at 2500base-X, but ++ // report 3.2GBd NRZ in their EEPROM ++ .vendor = "ALCATELLUCENT", ++ .part = "3FE46541AA", ++ .modes = sfp_quirk_2500basex, ++ }, { ++ // Huawei MA5671A can operate at 2500base-X, but report 1.2GBd ++ // NRZ in their EEPROM ++ .vendor = "HUAWEI", ++ .part = "MA5671A", ++ .modes = sfp_quirk_2500basex, ++ }, + }; + + static size_t sfp_strlen(const char *str, size_t maxlen) diff --git a/target/linux/generic/backport-4.19/744-v5.5-net-sfp-soft-status-and-control-support.patch b/target/linux/generic/backport-4.19/744-v5.5-net-sfp-soft-status-and-control-support.patch new file mode 100644 index 0000000000..163d8072e6 --- /dev/null +++ b/target/linux/generic/backport-4.19/744-v5.5-net-sfp-soft-status-and-control-support.patch @@ -0,0 +1,225 @@ +From 40e0b3b15f7da92e6b065292b14af7b9bfb1c6e0 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 13 Sep 2019 23:00:35 +0100 +Subject: [PATCH 642/660] net: sfp: soft status and control support + +Add support for the soft status and control register, which allows +TX_FAULT and RX_LOS to be monitored and TX_DISABLE to be set. We +make use of this when the board does not support GPIOs for these +signals. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 110 ++++++++++++++++++++++++++++++++++-------- + include/linux/sfp.h | 4 ++ + 2 files changed, 94 insertions(+), 20 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -199,7 +199,10 @@ struct sfp { + struct gpio_desc *gpio[GPIO_MAX]; + int gpio_irq[GPIO_MAX]; + ++ bool need_poll; ++ + struct mutex st_mutex; /* Protects state */ ++ unsigned int state_soft_mask; + unsigned int state; + struct delayed_work poll; + struct delayed_work timeout; +@@ -393,24 +396,90 @@ static int sfp_i2c_configure(struct sfp + } + + /* Interface */ +-static unsigned int sfp_get_state(struct sfp *sfp) ++static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) + { +- return sfp->get_state(sfp); ++ return sfp->read(sfp, a2, addr, buf, len); + } + +-static void sfp_set_state(struct sfp *sfp, unsigned int state) ++static int sfp_write(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) + { +- sfp->set_state(sfp, state); ++ return sfp->write(sfp, a2, addr, buf, len); + } + +-static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) ++static unsigned int sfp_soft_get_state(struct sfp *sfp) + { +- return sfp->read(sfp, a2, addr, buf, len); ++ unsigned int state = 0; ++ u8 status; ++ ++ if (sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status)) == ++ sizeof(status)) { ++ if (status & SFP_STATUS_RX_LOS) ++ state |= SFP_F_LOS; ++ if (status & SFP_STATUS_TX_FAULT) ++ state |= SFP_F_TX_FAULT; ++ } ++ ++ return state & sfp->state_soft_mask; + } + +-static int sfp_write(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) ++static void sfp_soft_set_state(struct sfp *sfp, unsigned int state) + { +- return sfp->write(sfp, a2, addr, buf, len); ++ u8 status; ++ ++ if (sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status)) == ++ sizeof(status)) { ++ if (state & SFP_F_TX_DISABLE) ++ status |= SFP_STATUS_TX_DISABLE_FORCE; ++ else ++ status &= ~SFP_STATUS_TX_DISABLE_FORCE; ++ ++ sfp_write(sfp, true, SFP_STATUS, &status, sizeof(status)); ++ } ++} ++ ++static void sfp_soft_start_poll(struct sfp *sfp) ++{ ++ const struct sfp_eeprom_id *id = &sfp->id; ++ ++ sfp->state_soft_mask = 0; ++ if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_DISABLE && ++ !sfp->gpio[GPIO_TX_DISABLE]) ++ sfp->state_soft_mask |= SFP_F_TX_DISABLE; ++ if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_FAULT && ++ !sfp->gpio[GPIO_TX_FAULT]) ++ sfp->state_soft_mask |= SFP_F_TX_FAULT; ++ if (id->ext.enhopts & SFP_ENHOPTS_SOFT_RX_LOS && ++ !sfp->gpio[GPIO_LOS]) ++ sfp->state_soft_mask |= SFP_F_LOS; ++ ++ if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) && ++ !sfp->need_poll) ++ mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); ++} ++ ++static void sfp_soft_stop_poll(struct sfp *sfp) ++{ ++ sfp->state_soft_mask = 0; ++} ++ ++static unsigned int sfp_get_state(struct sfp *sfp) ++{ ++ unsigned int state = sfp->get_state(sfp); ++ ++ if (state & SFP_F_PRESENT && ++ sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT)) ++ state |= sfp_soft_get_state(sfp); ++ ++ return state; ++} ++ ++static void sfp_set_state(struct sfp *sfp, unsigned int state) ++{ ++ sfp->set_state(sfp, state); ++ ++ if (state & SFP_F_PRESENT && ++ sfp->state_soft_mask & SFP_F_TX_DISABLE) ++ sfp_soft_set_state(sfp, state); + } + + static unsigned int sfp_check(void *buf, size_t len) +@@ -1342,11 +1411,6 @@ static void sfp_sm_fault(struct sfp *sfp + } + } + +-static void sfp_sm_mod_init(struct sfp *sfp) +-{ +- sfp_module_tx_enable(sfp); +-} +- + static void sfp_sm_probe_for_phy(struct sfp *sfp) + { + /* Setting the serdes link mode is guesswork: there's no +@@ -1509,7 +1573,7 @@ static int sfp_sm_mod_probe(struct sfp * + (int)sizeof(id.ext.datecode), id.ext.datecode); + + /* Check whether we support this module */ +- if (!sfp->type->module_supported(&sfp->id)) { ++ if (!sfp->type->module_supported(&id)) { + dev_err(sfp->dev, + "module is not supported - phys id 0x%02x 0x%02x\n", + sfp->id.base.phys_id, sfp->id.base.phys_ext_id); +@@ -1699,6 +1763,7 @@ static void sfp_sm_main(struct sfp *sfp, + if (sfp->mod_phy) + sfp_sm_phy_detach(sfp); + sfp_module_tx_disable(sfp); ++ sfp_soft_stop_poll(sfp); + sfp_sm_next(sfp, SFP_S_DOWN, 0); + return; + } +@@ -1710,7 +1775,10 @@ static void sfp_sm_main(struct sfp *sfp, + sfp->sm_dev_state != SFP_DEV_UP) + break; + +- sfp_sm_mod_init(sfp); ++ if (!(sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)) ++ sfp_soft_start_poll(sfp); ++ ++ sfp_module_tx_enable(sfp); + + /* Initialise the fault clearance retries */ + sfp->sm_retries = 5; +@@ -1966,7 +2034,10 @@ static void sfp_poll(struct work_struct + struct sfp *sfp = container_of(work, struct sfp, poll.work); + + sfp_check_state(sfp); +- mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); ++ ++ if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) || ++ sfp->need_poll) ++ mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); + } + + static struct sfp *sfp_alloc(struct device *dev) +@@ -2010,7 +2081,6 @@ static int sfp_probe(struct platform_dev + { + const struct sff_data *sff; + struct sfp *sfp; +- bool poll = false; + int err, i; + + sfp = sfp_alloc(&pdev->dev); +@@ -2100,7 +2170,7 @@ static int sfp_probe(struct platform_dev + + sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]); + if (!sfp->gpio_irq[i]) { +- poll = true; ++ sfp->need_poll = true; + continue; + } + +@@ -2112,11 +2182,11 @@ static int sfp_probe(struct platform_dev + dev_name(sfp->dev), sfp); + if (err) { + sfp->gpio_irq[i] = 0; +- poll = true; ++ sfp->need_poll = true; + } + } + +- if (poll) ++ if (sfp->need_poll) + mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); + + /* We could have an issue in cases no Tx disable pin is available or +--- a/include/linux/sfp.h ++++ b/include/linux/sfp.h +@@ -428,6 +428,10 @@ enum { + SFP_TEC_CUR = 0x6c, + + SFP_STATUS = 0x6e, ++ SFP_STATUS_TX_DISABLE = BIT(7), ++ SFP_STATUS_TX_DISABLE_FORCE = BIT(6), ++ SFP_STATUS_TX_FAULT = BIT(2), ++ SFP_STATUS_RX_LOS = BIT(1), + SFP_ALARM0 = 0x70, + SFP_ALARM0_TEMP_HIGH = BIT(7), + SFP_ALARM0_TEMP_LOW = BIT(6), |