diff options
Diffstat (limited to 'target/linux/mvebu/patches-4.4')
29 files changed, 6208 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.4/120-phy-move-fixed_phy-MII-register-generation-to-a-libr.patch b/target/linux/mvebu/patches-4.4/120-phy-move-fixed_phy-MII-register-generation-to-a-libr.patch new file mode 100644 index 0000000..00745f1 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/120-phy-move-fixed_phy-MII-register-generation-to-a-libr.patch @@ -0,0 +1,306 @@ +From 4d5621372f6e7ddbfd5879602f82073987bcc722 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 20 Sep 2015 09:57:10 +0100 +Subject: [PATCH 709/744] phy: move fixed_phy MII register generation to a + library + +Move the fixed_phy MII register generation to a library to allow other +software phy implementations to use this code. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/Kconfig | 4 ++ + drivers/net/phy/Makefile | 3 +- + drivers/net/phy/fixed_phy.c | 95 ++------------------------------- + drivers/net/phy/swphy.c | 126 ++++++++++++++++++++++++++++++++++++++++++++ + drivers/net/phy/swphy.h | 8 +++ + 5 files changed, 143 insertions(+), 93 deletions(-) + create mode 100644 drivers/net/phy/swphy.c + create mode 100644 drivers/net/phy/swphy.h + +--- a/drivers/net/phy/Kconfig ++++ b/drivers/net/phy/Kconfig +@@ -26,6 +26,9 @@ config SWCONFIG_LEDS + bool "Switch LED trigger support" + depends on (SWCONFIG && LEDS_TRIGGERS) + ++config SWPHY ++ bool ++ + comment "MII PHY device drivers" + + config AQUANTIA_PHY +@@ -205,6 +208,7 @@ config RTL8306_PHY + config FIXED_PHY + tristate "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs" + depends on PHYLIB ++ select SWPHY + ---help--- + Adds the platform "fixed" MDIO Bus to cover the boards that use + PHYs that are not connected to the real MDIO bus. +--- a/drivers/net/phy/Makefile ++++ b/drivers/net/phy/Makefile +@@ -1,6 +1,7 @@ + # Makefile for Linux PHY drivers + +-libphy-objs := phy.o phy_device.o mdio_bus.o ++libphy-y := phy.o phy_device.o mdio_bus.o ++libphy-$(CONFIG_SWPHY) += swphy.o + + obj-$(CONFIG_MDIO_BOARDINFO) += mdio-boardinfo.o + +--- a/drivers/net/phy/fixed_phy.c ++++ b/drivers/net/phy/fixed_phy.c +@@ -24,6 +24,8 @@ + #include <linux/of.h> + #include <linux/gpio.h> + ++#include "swphy.h" ++ + #define MII_REGS_NUM 29 + + struct fixed_mdio_bus { +@@ -49,101 +51,10 @@ static struct fixed_mdio_bus platform_fm + + static int fixed_phy_update_regs(struct fixed_phy *fp) + { +- u16 bmsr = BMSR_ANEGCAPABLE; +- u16 bmcr = 0; +- u16 lpagb = 0; +- u16 lpa = 0; +- + if (gpio_is_valid(fp->link_gpio)) + fp->status.link = !!gpio_get_value_cansleep(fp->link_gpio); + +- if (fp->status.duplex) { +- switch (fp->status.speed) { +- case 1000: +- bmsr |= BMSR_ESTATEN; +- break; +- case 100: +- bmsr |= BMSR_100FULL; +- break; +- case 10: +- bmsr |= BMSR_10FULL; +- break; +- default: +- break; +- } +- } else { +- switch (fp->status.speed) { +- case 1000: +- bmsr |= BMSR_ESTATEN; +- break; +- case 100: +- bmsr |= BMSR_100HALF; +- break; +- case 10: +- bmsr |= BMSR_10HALF; +- break; +- default: +- break; +- } +- } +- +- if (fp->status.link) { +- bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE; +- +- if (fp->status.duplex) { +- bmcr |= BMCR_FULLDPLX; +- +- switch (fp->status.speed) { +- case 1000: +- bmcr |= BMCR_SPEED1000; +- lpagb |= LPA_1000FULL; +- break; +- case 100: +- bmcr |= BMCR_SPEED100; +- lpa |= LPA_100FULL; +- break; +- case 10: +- lpa |= LPA_10FULL; +- break; +- default: +- pr_warn("fixed phy: unknown speed\n"); +- return -EINVAL; +- } +- } else { +- switch (fp->status.speed) { +- case 1000: +- bmcr |= BMCR_SPEED1000; +- lpagb |= LPA_1000HALF; +- break; +- case 100: +- bmcr |= BMCR_SPEED100; +- lpa |= LPA_100HALF; +- break; +- case 10: +- lpa |= LPA_10HALF; +- break; +- default: +- pr_warn("fixed phy: unknown speed\n"); +- return -EINVAL; +- } +- } +- +- if (fp->status.pause) +- lpa |= LPA_PAUSE_CAP; +- +- if (fp->status.asym_pause) +- lpa |= LPA_PAUSE_ASYM; +- } +- +- fp->regs[MII_PHYSID1] = 0; +- fp->regs[MII_PHYSID2] = 0; +- +- fp->regs[MII_BMSR] = bmsr; +- fp->regs[MII_BMCR] = bmcr; +- fp->regs[MII_LPA] = lpa; +- fp->regs[MII_STAT1000] = lpagb; +- +- return 0; ++ return swphy_update_regs(fp->regs, &fp->status); + } + + static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num) +--- /dev/null ++++ b/drivers/net/phy/swphy.c +@@ -0,0 +1,126 @@ ++/* ++ * Software PHY emulation ++ * ++ * Code taken from fixed_phy.c by Russell King <rmk+kernel@arm.linux.org.uk> ++ * ++ * Author: Vitaly Bordug <vbordug@ru.mvista.com> ++ * Anton Vorontsov <avorontsov@ru.mvista.com> ++ * ++ * Copyright (c) 2006-2007 MontaVista Software, Inc. ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License as published by the ++ * Free Software Foundation; either version 2 of the License, or (at your ++ * option) any later version. ++ */ ++#include <linux/export.h> ++#include <linux/mii.h> ++#include <linux/phy.h> ++#include <linux/phy_fixed.h> ++ ++#include "swphy.h" ++ ++/** ++ * swphy_update_regs - update MII register array with fixed phy state ++ * @regs: array of 32 registers to update ++ * @state: fixed phy status ++ * ++ * Update the array of MII registers with the fixed phy link, speed, ++ * duplex and pause mode settings. ++ */ ++int swphy_update_regs(u16 *regs, const struct fixed_phy_status *state) ++{ ++ u16 bmsr = BMSR_ANEGCAPABLE; ++ u16 bmcr = 0; ++ u16 lpagb = 0; ++ u16 lpa = 0; ++ ++ if (state->duplex) { ++ switch (state->speed) { ++ case 1000: ++ bmsr |= BMSR_ESTATEN; ++ break; ++ case 100: ++ bmsr |= BMSR_100FULL; ++ break; ++ case 10: ++ bmsr |= BMSR_10FULL; ++ break; ++ default: ++ break; ++ } ++ } else { ++ switch (state->speed) { ++ case 1000: ++ bmsr |= BMSR_ESTATEN; ++ break; ++ case 100: ++ bmsr |= BMSR_100HALF; ++ break; ++ case 10: ++ bmsr |= BMSR_10HALF; ++ break; ++ default: ++ break; ++ } ++ } ++ ++ if (state->link) { ++ bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE; ++ ++ if (state->duplex) { ++ bmcr |= BMCR_FULLDPLX; ++ ++ switch (state->speed) { ++ case 1000: ++ bmcr |= BMCR_SPEED1000; ++ lpagb |= LPA_1000FULL; ++ break; ++ case 100: ++ bmcr |= BMCR_SPEED100; ++ lpa |= LPA_100FULL; ++ break; ++ case 10: ++ lpa |= LPA_10FULL; ++ break; ++ default: ++ pr_warn("swphy: unknown speed\n"); ++ return -EINVAL; ++ } ++ } else { ++ switch (state->speed) { ++ case 1000: ++ bmcr |= BMCR_SPEED1000; ++ lpagb |= LPA_1000HALF; ++ break; ++ case 100: ++ bmcr |= BMCR_SPEED100; ++ lpa |= LPA_100HALF; ++ break; ++ case 10: ++ lpa |= LPA_10HALF; ++ break; ++ default: ++ pr_warn("swphy: unknown speed\n"); ++ return -EINVAL; ++ } ++ } ++ ++ if (state->pause) ++ lpa |= LPA_PAUSE_CAP; ++ ++ if (state->asym_pause) ++ lpa |= LPA_PAUSE_ASYM; ++ } ++ ++ regs[MII_PHYSID1] = 0; ++ regs[MII_PHYSID2] = 0; ++ ++ regs[MII_BMSR] = bmsr; ++ regs[MII_BMCR] = bmcr; ++ regs[MII_LPA] = lpa; ++ regs[MII_STAT1000] = lpagb; ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(swphy_update_regs); +--- /dev/null ++++ b/drivers/net/phy/swphy.h +@@ -0,0 +1,8 @@ ++#ifndef SWPHY_H ++#define SWPHY_H ++ ++struct fixed_phy_status; ++ ++int swphy_update_regs(u16 *regs, const struct fixed_phy_status *state); ++ ++#endif diff --git a/target/linux/mvebu/patches-4.4/121-phy-convert-swphy-register-generation-to-tabular-for.patch b/target/linux/mvebu/patches-4.4/121-phy-convert-swphy-register-generation-to-tabular-for.patch new file mode 100644 index 0000000..0d689f3 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/121-phy-convert-swphy-register-generation-to-tabular-for.patch @@ -0,0 +1,203 @@ +From cd834fe430f030a63bfa9277bba194e8eef4dbd0 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 20 Sep 2015 10:18:59 +0100 +Subject: [PATCH 710/744] phy: convert swphy register generation to tabular + form + +Convert the swphy register generation to tabular form which allows us +to eliminate multiple switch() statements. This results in a smaller +object code size, more efficient, and easier to add support for faster +speeds. + +Before: + +Idx Name Size VMA LMA File off Algn + 0 .text 00000164 00000000 00000000 00000034 2**2 + + text data bss dec hex filename + 388 0 0 388 184 swphy.o + +After: + +Idx Name Size VMA LMA File off Algn + 0 .text 000000fc 00000000 00000000 00000034 2**2 + 5 .rodata 00000028 00000000 00000000 00000138 2**2 + + text data bss dec hex filename + 324 0 0 324 144 swphy.o + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/swphy.c | 143 ++++++++++++++++++++++++++---------------------- + 1 file changed, 78 insertions(+), 65 deletions(-) + +--- a/drivers/net/phy/swphy.c ++++ b/drivers/net/phy/swphy.c +@@ -20,6 +20,72 @@ + + #include "swphy.h" + ++struct swmii_regs { ++ u16 bmcr; ++ u16 bmsr; ++ u16 lpa; ++ u16 lpagb; ++}; ++ ++enum { ++ SWMII_SPEED_10 = 0, ++ SWMII_SPEED_100, ++ SWMII_SPEED_1000, ++ SWMII_DUPLEX_HALF = 0, ++ SWMII_DUPLEX_FULL, ++}; ++ ++/* ++ * These two tables get bitwise-anded together to produce the final result. ++ * This means the speed table must contain both duplex settings, and the ++ * duplex table must contain all speed settings. ++ */ ++static const struct swmii_regs speed[] = { ++ [SWMII_SPEED_10] = { ++ .bmcr = BMCR_FULLDPLX, ++ .lpa = LPA_10FULL | LPA_10HALF, ++ }, ++ [SWMII_SPEED_100] = { ++ .bmcr = BMCR_FULLDPLX | BMCR_SPEED100, ++ .bmsr = BMSR_100FULL | BMSR_100HALF, ++ .lpa = LPA_100FULL | LPA_100HALF, ++ }, ++ [SWMII_SPEED_1000] = { ++ .bmcr = BMCR_FULLDPLX | BMCR_SPEED1000, ++ .bmsr = BMSR_ESTATEN, ++ .lpagb = LPA_1000FULL | LPA_1000HALF, ++ }, ++}; ++ ++static const struct swmii_regs duplex[] = { ++ [SWMII_DUPLEX_HALF] = { ++ .bmcr = ~BMCR_FULLDPLX, ++ .bmsr = BMSR_ESTATEN | BMSR_100HALF, ++ .lpa = LPA_10HALF | LPA_100HALF, ++ .lpagb = LPA_1000HALF, ++ }, ++ [SWMII_DUPLEX_FULL] = { ++ .bmcr = ~0, ++ .bmsr = BMSR_ESTATEN | BMSR_100FULL, ++ .lpa = LPA_10FULL | LPA_100FULL, ++ .lpagb = LPA_1000FULL, ++ }, ++}; ++ ++static int swphy_decode_speed(int speed) ++{ ++ switch (speed) { ++ case 1000: ++ return SWMII_SPEED_1000; ++ case 100: ++ return SWMII_SPEED_100; ++ case 10: ++ return SWMII_SPEED_10; ++ default: ++ return -EINVAL; ++ } ++} ++ + /** + * swphy_update_regs - update MII register array with fixed phy state + * @regs: array of 32 registers to update +@@ -30,81 +96,28 @@ + */ + int swphy_update_regs(u16 *regs, const struct fixed_phy_status *state) + { ++ int speed_index, duplex_index; + u16 bmsr = BMSR_ANEGCAPABLE; + u16 bmcr = 0; + u16 lpagb = 0; + u16 lpa = 0; + +- if (state->duplex) { +- switch (state->speed) { +- case 1000: +- bmsr |= BMSR_ESTATEN; +- break; +- case 100: +- bmsr |= BMSR_100FULL; +- break; +- case 10: +- bmsr |= BMSR_10FULL; +- break; +- default: +- break; +- } +- } else { +- switch (state->speed) { +- case 1000: +- bmsr |= BMSR_ESTATEN; +- break; +- case 100: +- bmsr |= BMSR_100HALF; +- break; +- case 10: +- bmsr |= BMSR_10HALF; +- break; +- default: +- break; +- } ++ speed_index = swphy_decode_speed(state->speed); ++ if (speed_index < 0) { ++ pr_warn("swphy: unknown speed\n"); ++ return -EINVAL; + } + ++ duplex_index = state->duplex ? SWMII_DUPLEX_FULL : SWMII_DUPLEX_HALF; ++ ++ bmsr |= speed[speed_index].bmsr & duplex[duplex_index].bmsr; ++ + if (state->link) { + bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE; + +- if (state->duplex) { +- bmcr |= BMCR_FULLDPLX; +- +- switch (state->speed) { +- case 1000: +- bmcr |= BMCR_SPEED1000; +- lpagb |= LPA_1000FULL; +- break; +- case 100: +- bmcr |= BMCR_SPEED100; +- lpa |= LPA_100FULL; +- break; +- case 10: +- lpa |= LPA_10FULL; +- break; +- default: +- pr_warn("swphy: unknown speed\n"); +- return -EINVAL; +- } +- } else { +- switch (state->speed) { +- case 1000: +- bmcr |= BMCR_SPEED1000; +- lpagb |= LPA_1000HALF; +- break; +- case 100: +- bmcr |= BMCR_SPEED100; +- lpa |= LPA_100HALF; +- break; +- case 10: +- lpa |= LPA_10HALF; +- break; +- default: +- pr_warn("swphy: unknown speed\n"); +- return -EINVAL; +- } +- } ++ bmcr |= speed[speed_index].bmcr & duplex[duplex_index].bmcr; ++ lpa |= speed[speed_index].lpa & duplex[duplex_index].lpa; ++ lpagb |= speed[speed_index].lpagb & duplex[duplex_index].lpagb; + + if (state->pause) + lpa |= LPA_PAUSE_CAP; diff --git a/target/linux/mvebu/patches-4.4/122-phy-separate-swphy-state-validation-from-register-ge.patch b/target/linux/mvebu/patches-4.4/122-phy-separate-swphy-state-validation-from-register-ge.patch new file mode 100644 index 0000000..4b332cc --- /dev/null +++ b/target/linux/mvebu/patches-4.4/122-phy-separate-swphy-state-validation-from-register-ge.patch @@ -0,0 +1,138 @@ +From e07630ad84c7dc145863f079f108154fb7c975e7 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 20 Sep 2015 11:12:15 +0100 +Subject: [PATCH 711/744] phy: separate swphy state validation from register + generation + +Separate out the generation of MII registers from the state validation. +This allows us to simplify the error handing in fixed_phy() by allowing +earlier error detection. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/fixed_phy.c | 15 +++++++-------- + drivers/net/phy/swphy.c | 33 ++++++++++++++++++++++++++------- + drivers/net/phy/swphy.h | 3 ++- + 3 files changed, 35 insertions(+), 16 deletions(-) + +--- a/drivers/net/phy/fixed_phy.c ++++ b/drivers/net/phy/fixed_phy.c +@@ -49,12 +49,12 @@ static struct fixed_mdio_bus platform_fm + .phys = LIST_HEAD_INIT(platform_fmb.phys), + }; + +-static int fixed_phy_update_regs(struct fixed_phy *fp) ++static void fixed_phy_update_regs(struct fixed_phy *fp) + { + if (gpio_is_valid(fp->link_gpio)) + fp->status.link = !!gpio_get_value_cansleep(fp->link_gpio); + +- return swphy_update_regs(fp->regs, &fp->status); ++ swphy_update_regs(fp->regs, &fp->status); + } + + static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num) +@@ -161,6 +161,10 @@ int fixed_phy_add(unsigned int irq, int + struct fixed_mdio_bus *fmb = &platform_fmb; + struct fixed_phy *fp; + ++ ret = swphy_validate_state(status); ++ if (ret < 0) ++ return ret; ++ + fp = kzalloc(sizeof(*fp), GFP_KERNEL); + if (!fp) + return -ENOMEM; +@@ -180,17 +184,12 @@ int fixed_phy_add(unsigned int irq, int + goto err_regs; + } + +- ret = fixed_phy_update_regs(fp); +- if (ret) +- goto err_gpio; ++ fixed_phy_update_regs(fp); + + list_add_tail(&fp->node, &fmb->phys); + + return 0; + +-err_gpio: +- if (gpio_is_valid(fp->link_gpio)) +- gpio_free(fp->link_gpio); + err_regs: + kfree(fp); + return ret; +--- a/drivers/net/phy/swphy.c ++++ b/drivers/net/phy/swphy.c +@@ -87,6 +87,29 @@ static int swphy_decode_speed(int speed) + } + + /** ++ * swphy_validate_state - validate the software phy status ++ * @state: software phy status ++ * ++ * This checks that we can represent the state stored in @state can be ++ * represented in the emulated MII registers. Returns 0 if it can, ++ * otherwise returns -EINVAL. ++ */ ++int swphy_validate_state(const struct fixed_phy_status *state) ++{ ++ int err; ++ ++ if (state->link) { ++ err = swphy_decode_speed(state->speed); ++ if (err < 0) { ++ pr_warn("swphy: unknown speed\n"); ++ return -EINVAL; ++ } ++ } ++ return 0; ++} ++EXPORT_SYMBOL_GPL(swphy_validate_state); ++ ++/** + * swphy_update_regs - update MII register array with fixed phy state + * @regs: array of 32 registers to update + * @state: fixed phy status +@@ -94,7 +117,7 @@ static int swphy_decode_speed(int speed) + * Update the array of MII registers with the fixed phy link, speed, + * duplex and pause mode settings. + */ +-int swphy_update_regs(u16 *regs, const struct fixed_phy_status *state) ++void swphy_update_regs(u16 *regs, const struct fixed_phy_status *state) + { + int speed_index, duplex_index; + u16 bmsr = BMSR_ANEGCAPABLE; +@@ -103,10 +126,8 @@ int swphy_update_regs(u16 *regs, const s + u16 lpa = 0; + + speed_index = swphy_decode_speed(state->speed); +- if (speed_index < 0) { +- pr_warn("swphy: unknown speed\n"); +- return -EINVAL; +- } ++ if (WARN_ON(speed_index < 0)) ++ return; + + duplex_index = state->duplex ? SWMII_DUPLEX_FULL : SWMII_DUPLEX_HALF; + +@@ -133,7 +154,5 @@ int swphy_update_regs(u16 *regs, const s + regs[MII_BMCR] = bmcr; + regs[MII_LPA] = lpa; + regs[MII_STAT1000] = lpagb; +- +- return 0; + } + EXPORT_SYMBOL_GPL(swphy_update_regs); +--- a/drivers/net/phy/swphy.h ++++ b/drivers/net/phy/swphy.h +@@ -3,6 +3,7 @@ + + struct fixed_phy_status; + +-int swphy_update_regs(u16 *regs, const struct fixed_phy_status *state); ++int swphy_validate_state(const struct fixed_phy_status *state); ++void swphy_update_regs(u16 *regs, const struct fixed_phy_status *state); + + #endif diff --git a/target/linux/mvebu/patches-4.4/123-phy-generate-swphy-registers-on-the-fly.patch b/target/linux/mvebu/patches-4.4/123-phy-generate-swphy-registers-on-the-fly.patch new file mode 100644 index 0000000..218b902 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/123-phy-generate-swphy-registers-on-the-fly.patch @@ -0,0 +1,204 @@ +From e0f33a88243329da1aa5a90fe10ab25c9fb0a091 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 20 Sep 2015 11:28:39 +0100 +Subject: [PATCH 712/744] phy: generate swphy registers on the fly + +Generate software phy registers as and when requested, rather than +duplicating the state in fixed_phy. This allows us to eliminate +the duplicate storage of of the same data, which is only different +in format. + +As fixed_phy_update_regs() no longer updates register state, rename +it to fixed_phy_update(). + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/fixed_phy.c | 31 +++++------------------------- + drivers/net/phy/swphy.c | 47 ++++++++++++++++++++++++++++++++------------- + drivers/net/phy/swphy.h | 2 +- + 3 files changed, 40 insertions(+), 40 deletions(-) + +--- a/drivers/net/phy/fixed_phy.c ++++ b/drivers/net/phy/fixed_phy.c +@@ -26,8 +26,6 @@ + + #include "swphy.h" + +-#define MII_REGS_NUM 29 +- + struct fixed_mdio_bus { + int irqs[PHY_MAX_ADDR]; + struct mii_bus *mii_bus; +@@ -36,7 +34,6 @@ struct fixed_mdio_bus { + + struct fixed_phy { + int addr; +- u16 regs[MII_REGS_NUM]; + struct phy_device *phydev; + struct fixed_phy_status status; + int (*link_update)(struct net_device *, struct fixed_phy_status *); +@@ -49,12 +46,10 @@ static struct fixed_mdio_bus platform_fm + .phys = LIST_HEAD_INIT(platform_fmb.phys), + }; + +-static void fixed_phy_update_regs(struct fixed_phy *fp) ++static void fixed_phy_update(struct fixed_phy *fp) + { + if (gpio_is_valid(fp->link_gpio)) + fp->status.link = !!gpio_get_value_cansleep(fp->link_gpio); +- +- swphy_update_regs(fp->regs, &fp->status); + } + + static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num) +@@ -62,29 +57,15 @@ static int fixed_mdio_read(struct mii_bu + struct fixed_mdio_bus *fmb = bus->priv; + struct fixed_phy *fp; + +- if (reg_num >= MII_REGS_NUM) +- return -1; +- +- /* We do not support emulating Clause 45 over Clause 22 register reads +- * return an error instead of bogus data. +- */ +- switch (reg_num) { +- case MII_MMD_CTRL: +- case MII_MMD_DATA: +- return -1; +- default: +- break; +- } +- + list_for_each_entry(fp, &fmb->phys, node) { + if (fp->addr == phy_addr) { + /* Issue callback if user registered it. */ + if (fp->link_update) { + fp->link_update(fp->phydev->attached_dev, + &fp->status); +- fixed_phy_update_regs(fp); ++ fixed_phy_update(fp); + } +- return fp->regs[reg_num]; ++ return swphy_read_reg(reg_num, &fp->status); + } + } + +@@ -144,7 +125,7 @@ int fixed_phy_update_state(struct phy_de + _UPD(pause); + _UPD(asym_pause); + #undef _UPD +- fixed_phy_update_regs(fp); ++ fixed_phy_update(fp); + return 0; + } + } +@@ -169,8 +150,6 @@ int fixed_phy_add(unsigned int irq, int + if (!fp) + return -ENOMEM; + +- memset(fp->regs, 0xFF, sizeof(fp->regs[0]) * MII_REGS_NUM); +- + fmb->irqs[phy_addr] = irq; + + fp->addr = phy_addr; +@@ -184,7 +163,7 @@ int fixed_phy_add(unsigned int irq, int + goto err_regs; + } + +- fixed_phy_update_regs(fp); ++ fixed_phy_update(fp); + + list_add_tail(&fp->node, &fmb->phys); + +--- a/drivers/net/phy/swphy.c ++++ b/drivers/net/phy/swphy.c +@@ -20,6 +20,8 @@ + + #include "swphy.h" + ++#define MII_REGS_NUM 29 ++ + struct swmii_regs { + u16 bmcr; + u16 bmsr; +@@ -110,14 +112,13 @@ int swphy_validate_state(const struct fi + EXPORT_SYMBOL_GPL(swphy_validate_state); + + /** +- * swphy_update_regs - update MII register array with fixed phy state +- * @regs: array of 32 registers to update ++ * swphy_read_reg - return a MII register from the fixed phy state ++ * @reg: MII register + * @state: fixed phy status + * +- * Update the array of MII registers with the fixed phy link, speed, +- * duplex and pause mode settings. ++ * Return the MII @reg register generated from the fixed phy state @state. + */ +-void swphy_update_regs(u16 *regs, const struct fixed_phy_status *state) ++int swphy_read_reg(int reg, const struct fixed_phy_status *state) + { + int speed_index, duplex_index; + u16 bmsr = BMSR_ANEGCAPABLE; +@@ -125,9 +126,12 @@ void swphy_update_regs(u16 *regs, const + u16 lpagb = 0; + u16 lpa = 0; + ++ if (reg > MII_REGS_NUM) ++ return -1; ++ + speed_index = swphy_decode_speed(state->speed); + if (WARN_ON(speed_index < 0)) +- return; ++ return 0; + + duplex_index = state->duplex ? SWMII_DUPLEX_FULL : SWMII_DUPLEX_HALF; + +@@ -147,12 +151,29 @@ void swphy_update_regs(u16 *regs, const + lpa |= LPA_PAUSE_ASYM; + } + +- regs[MII_PHYSID1] = 0; +- regs[MII_PHYSID2] = 0; ++ switch (reg) { ++ case MII_BMCR: ++ return bmcr; ++ case MII_BMSR: ++ return bmsr; ++ case MII_PHYSID1: ++ case MII_PHYSID2: ++ return 0; ++ case MII_LPA: ++ return lpa; ++ case MII_STAT1000: ++ return lpagb; ++ ++ /* ++ * We do not support emulating Clause 45 over Clause 22 register ++ * reads. Return an error instead of bogus data. ++ */ ++ case MII_MMD_CTRL: ++ case MII_MMD_DATA: ++ return -1; + +- regs[MII_BMSR] = bmsr; +- regs[MII_BMCR] = bmcr; +- regs[MII_LPA] = lpa; +- regs[MII_STAT1000] = lpagb; ++ default: ++ return 0xffff; ++ } + } +-EXPORT_SYMBOL_GPL(swphy_update_regs); ++EXPORT_SYMBOL_GPL(swphy_read_reg); +--- a/drivers/net/phy/swphy.h ++++ b/drivers/net/phy/swphy.h +@@ -4,6 +4,6 @@ + struct fixed_phy_status; + + int swphy_validate_state(const struct fixed_phy_status *state); +-void swphy_update_regs(u16 *regs, const struct fixed_phy_status *state); ++int swphy_read_reg(int reg, const struct fixed_phy_status *state); + + #endif diff --git a/target/linux/mvebu/patches-4.4/124-phy-improve-safety-of-fixed-phy-MII-register-reading.patch b/target/linux/mvebu/patches-4.4/124-phy-improve-safety-of-fixed-phy-MII-register-reading.patch new file mode 100644 index 0000000..5167b07 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/124-phy-improve-safety-of-fixed-phy-MII-register-reading.patch @@ -0,0 +1,92 @@ +From c36739c3cfd277a4cc9820a29dd0f4b7fbac795b Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 20 Sep 2015 18:31:36 +0100 +Subject: [PATCH 713/744] phy: improve safety of fixed-phy MII register reading + +There is no prevention of a concurrent call to both fixed_mdio_read() +and fixed_phy_update_state(), which can result in the state being +modified while it's being inspected. Fix this by using a seqcount +to detect modifications, and memcpy()ing the state. + +We remain slightly naughty here, calling link_update() and updating +the link status within the read-side loop - which would need rework +of the design to change. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/fixed_phy.c | 28 +++++++++++++++++++++------- + 1 file changed, 21 insertions(+), 7 deletions(-) + +--- a/drivers/net/phy/fixed_phy.c ++++ b/drivers/net/phy/fixed_phy.c +@@ -23,6 +23,7 @@ + #include <linux/slab.h> + #include <linux/of.h> + #include <linux/gpio.h> ++#include <linux/seqlock.h> + + #include "swphy.h" + +@@ -35,6 +36,7 @@ struct fixed_mdio_bus { + struct fixed_phy { + int addr; + struct phy_device *phydev; ++ seqcount_t seqcount; + struct fixed_phy_status status; + int (*link_update)(struct net_device *, struct fixed_phy_status *); + struct list_head node; +@@ -59,13 +61,21 @@ static int fixed_mdio_read(struct mii_bu + + list_for_each_entry(fp, &fmb->phys, node) { + if (fp->addr == phy_addr) { +- /* Issue callback if user registered it. */ +- if (fp->link_update) { +- fp->link_update(fp->phydev->attached_dev, +- &fp->status); +- fixed_phy_update(fp); +- } +- return swphy_read_reg(reg_num, &fp->status); ++ struct fixed_phy_status state; ++ int s; ++ ++ do { ++ s = read_seqcount_begin(&fp->seqcount); ++ /* Issue callback if user registered it. */ ++ if (fp->link_update) { ++ fp->link_update(fp->phydev->attached_dev, ++ &fp->status); ++ fixed_phy_update(fp); ++ } ++ state = fp->status; ++ } while (read_seqcount_retry(&fp->seqcount, s)); ++ ++ return swphy_read_reg(reg_num, &state); + } + } + +@@ -117,6 +127,7 @@ int fixed_phy_update_state(struct phy_de + + list_for_each_entry(fp, &fmb->phys, node) { + if (fp->addr == phydev->addr) { ++ write_seqcount_begin(&fp->seqcount); + #define _UPD(x) if (changed->x) \ + fp->status.x = status->x + _UPD(link); +@@ -126,6 +137,7 @@ int fixed_phy_update_state(struct phy_de + _UPD(asym_pause); + #undef _UPD + fixed_phy_update(fp); ++ write_seqcount_end(&fp->seqcount); + return 0; + } + } +@@ -150,6 +162,8 @@ int fixed_phy_add(unsigned int irq, int + if (!fp) + return -ENOMEM; + ++ seqcount_init(&fp->seqcount); ++ + fmb->irqs[phy_addr] = irq; + + fp->addr = phy_addr; diff --git a/target/linux/mvebu/patches-4.4/125-phy-provide-a-hook-for-link-up-link-down-events.patch b/target/linux/mvebu/patches-4.4/125-phy-provide-a-hook-for-link-up-link-down-events.patch new file mode 100644 index 0000000..17c1ead --- /dev/null +++ b/target/linux/mvebu/patches-4.4/125-phy-provide-a-hook-for-link-up-link-down-events.patch @@ -0,0 +1,183 @@ +From d8b4e728f598d3c8a9b219d4679d5de350caa082 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Fri, 18 Sep 2015 14:42:16 +0100 +Subject: [PATCH 714/744] phy: provide a hook for link up/link down events + +Sometimes, we need to do additional work between the PHY coming up and +marking the carrier present - for example, we may need to wait for the +PHY to MAC link to finish negotiation. This changes phylib to provide +a notification function pointer which avoids the built-in +netif_carrier_on() and netif_carrier_off() functions. + +Standard ->adjust_link functionality is provided by hooking a helper +into the new ->phy_link_change method. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phy.c | 42 ++++++++++++++++++++++-------------------- + drivers/net/phy/phy_device.c | 14 ++++++++++++++ + include/linux/phy.h | 1 + + 3 files changed, 37 insertions(+), 20 deletions(-) + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -847,6 +847,16 @@ void phy_start(struct phy_device *phydev + } + EXPORT_SYMBOL(phy_start); + ++static void phy_link_up(struct phy_device *phydev) ++{ ++ phydev->phy_link_change(phydev, true, true); ++} ++ ++static void phy_link_down(struct phy_device *phydev, bool do_carrier) ++{ ++ phydev->phy_link_change(phydev, false, do_carrier); ++} ++ + /** + * phy_state_machine - Handle the state machine + * @work: work_struct that describes the work to be done +@@ -888,8 +898,7 @@ void phy_state_machine(struct work_struc + /* If the link is down, give up on negotiation for now */ + if (!phydev->link) { + phydev->state = PHY_NOLINK; +- netif_carrier_off(phydev->attached_dev); +- phydev->adjust_link(phydev->attached_dev); ++ phy_link_down(phydev, true); + break; + } + +@@ -901,9 +910,7 @@ void phy_state_machine(struct work_struc + /* If AN is done, we're running */ + if (err > 0) { + phydev->state = PHY_RUNNING; +- netif_carrier_on(phydev->attached_dev); +- phydev->adjust_link(phydev->attached_dev); +- ++ phy_link_up(phydev); + } else if (0 == phydev->link_timeout--) + needs_aneg = true; + break; +@@ -928,8 +935,7 @@ void phy_state_machine(struct work_struc + } + } + phydev->state = PHY_RUNNING; +- netif_carrier_on(phydev->attached_dev); +- phydev->adjust_link(phydev->attached_dev); ++ phy_link_up(phydev); + } + break; + case PHY_FORCING: +@@ -939,13 +945,12 @@ void phy_state_machine(struct work_struc + + if (phydev->link) { + phydev->state = PHY_RUNNING; +- netif_carrier_on(phydev->attached_dev); ++ phy_link_up(phydev); + } else { + if (0 == phydev->link_timeout--) + needs_aneg = true; ++ phy_link_down(phydev, false); + } +- +- phydev->adjust_link(phydev->attached_dev); + break; + case PHY_RUNNING: + /* Only register a CHANGE if we are polling or ignoring +@@ -968,14 +973,12 @@ void phy_state_machine(struct work_struc + + if (phydev->link) { + phydev->state = PHY_RUNNING; +- netif_carrier_on(phydev->attached_dev); ++ phy_link_up(phydev); + } else { + phydev->state = PHY_NOLINK; +- netif_carrier_off(phydev->attached_dev); ++ phy_link_down(phydev, true); + } + +- phydev->adjust_link(phydev->attached_dev); +- + if (phy_interrupt_is_valid(phydev)) + err = phy_config_interrupt(phydev, + PHY_INTERRUPT_ENABLED); +@@ -983,8 +986,7 @@ void phy_state_machine(struct work_struc + case PHY_HALTED: + if (phydev->link) { + phydev->link = 0; +- netif_carrier_off(phydev->attached_dev); +- phydev->adjust_link(phydev->attached_dev); ++ phy_link_down(phydev, true); + do_suspend = true; + } + break; +@@ -1004,11 +1006,11 @@ void phy_state_machine(struct work_struc + + if (phydev->link) { + phydev->state = PHY_RUNNING; +- netif_carrier_on(phydev->attached_dev); ++ phy_link_up(phydev); + } else { + phydev->state = PHY_NOLINK; ++ phy_link_down(phydev, false); + } +- phydev->adjust_link(phydev->attached_dev); + } else { + phydev->state = PHY_AN; + phydev->link_timeout = PHY_AN_TIMEOUT; +@@ -1020,11 +1022,11 @@ void phy_state_machine(struct work_struc + + if (phydev->link) { + phydev->state = PHY_RUNNING; +- netif_carrier_on(phydev->attached_dev); ++ phy_link_up(phydev); + } else { + phydev->state = PHY_NOLINK; ++ phy_link_down(phydev, false); + } +- phydev->adjust_link(phydev->attached_dev); + } + break; + } +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -441,6 +441,19 @@ struct phy_device *phy_find_first(struct + } + EXPORT_SYMBOL(phy_find_first); + ++static void phy_link_change(struct phy_device *phydev, bool up, bool do_carrier) ++{ ++ struct net_device *netdev = phydev->attached_dev; ++ ++ if (do_carrier) { ++ if (up) ++ netif_carrier_on(netdev); ++ else ++ netif_carrier_off(netdev); ++ } ++ phydev->adjust_link(netdev); ++} ++ + /** + * phy_prepare_link - prepares the PHY layer to monitor link status + * @phydev: target phy_device struct +@@ -659,6 +672,7 @@ int phy_attach_direct(struct net_device + goto error; + } + ++ phydev->phy_link_change = phy_link_change; + phydev->attached_dev = dev; + dev->phydev = phydev; + +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -433,6 +433,7 @@ struct phy_device { + + u8 mdix; + ++ void (*phy_link_change)(struct phy_device *, bool up, bool do_carrier); + void (*adjust_link)(struct net_device *dev); + }; + #define to_phy_device(d) container_of(d, struct phy_device, dev) diff --git a/target/linux/mvebu/patches-4.4/126-phy-marvell-88E1512-add-flow-control-support.patch b/target/linux/mvebu/patches-4.4/126-phy-marvell-88E1512-add-flow-control-support.patch new file mode 100644 index 0000000..e731c4d --- /dev/null +++ b/target/linux/mvebu/patches-4.4/126-phy-marvell-88E1512-add-flow-control-support.patch @@ -0,0 +1,26 @@ +From 5eed0bf3bc3e69b20a13d8ffcdf97cb720391637 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 00:34:08 +0100 +Subject: [PATCH 735/744] phy: marvell: 88E1512: add flow control support + +The Marvell PHYs support pause frame advertisments, so we should not be +masking their support off. Add the necessary flag to the Marvell PHY +to allow any MAC level pause frame support to be advertised. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/marvell.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/net/phy/marvell.c ++++ b/drivers/net/phy/marvell.c +@@ -1142,7 +1142,7 @@ static struct phy_driver marvell_drivers + .phy_id = MARVELL_PHY_ID_88E1510, + .phy_id_mask = MARVELL_PHY_ID_MASK, + .name = "Marvell 88E1510", +- .features = PHY_GBIT_FEATURES, ++ .features = PHY_GBIT_FEATURES | SUPPORTED_Pause, + .flags = PHY_HAS_INTERRUPT, + .config_aneg = &m88e1510_config_aneg, + .read_status = &marvell_read_status, diff --git a/target/linux/mvebu/patches-4.4/127-phy-export-phy_start_machine-for-phylink.patch b/target/linux/mvebu/patches-4.4/127-phy-export-phy_start_machine-for-phylink.patch new file mode 100644 index 0000000..eb73933 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/127-phy-export-phy_start_machine-for-phylink.patch @@ -0,0 +1,25 @@ +From f2a9687b39cda3fb67ecd5eaa88e3545e78c982c Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Fri, 16 Oct 2015 12:18:41 +0100 +Subject: [PATCH 715/744] phy: export phy_start_machine() for phylink + +phylink will need phy_start_machine exported, so lets export it as a +GPL symbol. Documentation/networking/phy.txt indicates that this +should be a PHY API function. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phy.c | 1 + + 1 file changed, 1 insertion(+) + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -568,6 +568,7 @@ void phy_start_machine(struct phy_device + { + queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); + } ++EXPORT_SYMBOL_GPL(phy_start_machine); + + /** + * phy_stop_machine - stop the PHY state machine tracking diff --git a/target/linux/mvebu/patches-4.4/128-phy-export-phy_speed_to_str-for-phylink.patch b/target/linux/mvebu/patches-4.4/128-phy-export-phy_speed_to_str-for-phylink.patch new file mode 100644 index 0000000..c436070 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/128-phy-export-phy_speed_to_str-for-phylink.patch @@ -0,0 +1,44 @@ +From 5c77cc2ffd5deb4762d9551409472f2441297fe7 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 18 Oct 2015 19:51:10 +0100 +Subject: [PATCH 716/744] phy: export phy_speed_to_str() for phylink + +phylink would like to reuse phy_speed_to_str() to convert the speed +to a string. Add a prototype and export this helper function. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phy.c | 3 ++- + include/linux/phy.h | 1 + + 2 files changed, 3 insertions(+), 1 deletion(-) + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -38,7 +38,7 @@ + + #include <asm/irq.h> + +-static const char *phy_speed_to_str(int speed) ++const char *phy_speed_to_str(int speed) + { + switch (speed) { + case SPEED_10: +@@ -57,6 +57,7 @@ static const char *phy_speed_to_str(int + return "Unsupported (update phy.c)"; + } + } ++EXPORT_SYMBOL_GPL(phy_speed_to_str); + + #define PHY_STATE_STR(_state) \ + case PHY_##_state: \ +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -812,6 +812,7 @@ int phy_ethtool_gset(struct phy_device * + int phy_ethtool_ioctl(struct phy_device *phydev, void *useraddr); + int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); + int phy_start_interrupts(struct phy_device *phydev); ++const char *phy_speed_to_str(int speed); + void phy_print_status(struct phy_device *phydev); + void phy_device_free(struct phy_device *phydev); + int phy_set_max_speed(struct phy_device *phydev, u32 max_speed); diff --git a/target/linux/mvebu/patches-4.4/129-phy-add-I2C-mdio-bus.patch b/target/linux/mvebu/patches-4.4/129-phy-add-I2C-mdio-bus.patch new file mode 100644 index 0000000..13f8ecf --- /dev/null +++ b/target/linux/mvebu/patches-4.4/129-phy-add-I2C-mdio-bus.patch @@ -0,0 +1,163 @@ +From 7f36ac946bfbd4090b8b94be3661b41ac73e21f4 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Fri, 25 Sep 2015 17:43:52 +0100 +Subject: [PATCH 717/744] phy: add I2C mdio bus + +Add an I2C MDIO bus bridge library, to allow phylib to access PHYs which +are connected to an I2C bus instead of the more conventional MDIO bus. +Such PHYs can be found in SFP adapters and SFF modules. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/Kconfig | 10 ++++++ + drivers/net/phy/Makefile | 1 + + drivers/net/phy/mdio-i2c.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++ + drivers/net/phy/mdio-i2c.h | 19 ++++++++++ + 4 files changed, 120 insertions(+) + create mode 100644 drivers/net/phy/mdio-i2c.c + create mode 100644 drivers/net/phy/mdio-i2c.h + +--- a/drivers/net/phy/Kconfig ++++ b/drivers/net/phy/Kconfig +@@ -233,6 +233,16 @@ config MDIO_GPIO + To compile this driver as a module, choose M here: the module + will be called mdio-gpio. + ++config MDIO_I2C ++ tristate ++ depends on I2C ++ help ++ Support I2C based PHYs. This provides a MDIO bus bridged ++ to I2C to allow PHYs connected in I2C mode to be accessed ++ using the existing infrastructure. ++ ++ This is library mode. ++ + config MDIO_OCTEON + tristate "Support for MDIO buses on Octeon and ThunderX SOCs" + depends on 64BIT +--- a/drivers/net/phy/Makefile ++++ b/drivers/net/phy/Makefile +@@ -41,6 +41,7 @@ obj-$(CONFIG_SWCONFIG_B53) += b53/ + obj-$(CONFIG_FIXED_PHY) += fixed_phy.o + obj-$(CONFIG_MDIO_BITBANG) += mdio-bitbang.o + obj-$(CONFIG_MDIO_GPIO) += mdio-gpio.o ++obj-$(CONFIG_MDIO_I2C) += mdio-i2c.o + obj-$(CONFIG_NATIONAL_PHY) += national.o + obj-$(CONFIG_DP83640_PHY) += dp83640.o + obj-$(CONFIG_DP83848_PHY) += dp83848.o +--- /dev/null ++++ b/drivers/net/phy/mdio-i2c.c +@@ -0,0 +1,90 @@ ++/* ++ * MDIO I2C bridge ++ * ++ * Copyright (C) 2015 Russell King ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++#include <linux/i2c.h> ++#include <linux/phy.h> ++ ++#include "mdio-i2c.h" ++ ++static int i2c_mii_read(struct mii_bus *bus, int phy_id, int reg) ++{ ++ struct i2c_adapter *i2c = bus->priv; ++ struct i2c_msg msgs[2]; ++ u8 data[2], dev_addr = reg; ++ int bus_addr, ret; ++ ++ bus_addr = 0x40 + phy_id; ++ if (bus_addr == 0x50 || bus_addr == 0x51) ++ return 0xffff; ++ ++ msgs[0].addr = bus_addr; ++ msgs[0].flags = 0; ++ msgs[0].len = 1; ++ msgs[0].buf = &dev_addr; ++ msgs[1].addr = bus_addr; ++ msgs[1].flags = I2C_M_RD; ++ msgs[1].len = sizeof(data); ++ msgs[1].buf = data; ++ ++ ret = i2c_transfer(i2c, msgs, ARRAY_SIZE(msgs)); ++ if (ret != ARRAY_SIZE(msgs)) ++ return 0xffff; ++ ++ return data[0] << 8 | data[1]; ++} ++ ++static int i2c_mii_write(struct mii_bus *bus, int phy_id, int reg, u16 val) ++{ ++ struct i2c_adapter *i2c = bus->priv; ++ struct i2c_msg msg; ++ int bus_addr, ret; ++ u8 data[3]; ++ ++ bus_addr = 0x40 + phy_id; ++ if (bus_addr == 0x50 || bus_addr == 0x51) ++ return 0; ++ ++ data[0] = reg; ++ data[1] = val >> 8; ++ data[2] = val; ++ ++ msg.addr = bus_addr; ++ msg.flags = 0; ++ msg.len = 3; ++ msg.buf = data; ++ ++ ret = i2c_transfer(i2c, &msg, 1); ++ ++ return ret < 0 ? ret : 0; ++} ++ ++struct mii_bus *mdio_i2c_alloc(struct device *parent, struct i2c_adapter *i2c) ++{ ++ struct mii_bus *mii; ++ ++ if (!i2c_check_functionality(i2c, I2C_FUNC_I2C)) ++ return ERR_PTR(-EINVAL); ++ ++ mii = mdiobus_alloc(); ++ if (!mii) ++ return ERR_PTR(-ENOMEM); ++ ++ snprintf(mii->id, MII_BUS_ID_SIZE, "i2c:%s", dev_name(parent)); ++ mii->parent = parent; ++ mii->read = i2c_mii_read; ++ mii->write = i2c_mii_write; ++ mii->priv = i2c; ++ ++ return mii; ++} ++EXPORT_SYMBOL_GPL(mdio_i2c_alloc); ++ ++MODULE_AUTHOR("Russell King"); ++MODULE_DESCRIPTION("MDIO I2C bridge library"); ++MODULE_LICENSE("GPL v2"); +--- /dev/null ++++ b/drivers/net/phy/mdio-i2c.h +@@ -0,0 +1,19 @@ ++/* ++ * MDIO I2C bridge ++ * ++ * Copyright (C) 2015 Russell King ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++#ifndef MDIO_I2C_H ++#define MDIO_I2C_H ++ ++struct device; ++struct i2c_adapter; ++struct mii_bus; ++ ++struct mii_bus *mdio_i2c_alloc(struct device *parent, struct i2c_adapter *i2c); ++ ++#endif diff --git a/target/linux/mvebu/patches-4.4/130-phylink-add-phylink-infrastructure.patch b/target/linux/mvebu/patches-4.4/130-phylink-add-phylink-infrastructure.patch new file mode 100644 index 0000000..0d340c8 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/130-phylink-add-phylink-infrastructure.patch @@ -0,0 +1,1005 @@ +From c6de6de7d3df13822872ac756eebe868d236297a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Tue, 22 Sep 2015 20:52:18 +0100 +Subject: [PATCH 718/744] phylink: add phylink infrastructure + +The link between the ethernet MAC and its PHY has become more complex +as the interface evolves. This is especially true with serdes links, +where the part of the PHY is effectively integrated into the MAC. + +Serdes links can be connected to a variety of devices, including SFF +modules soldered down onto the board with the MAC, a SFP cage with +a hotpluggable SFP module which may contain a PHY or directly modulate +the serdes signals onto optical media with or without a PHY, or even +a classical PHY connection. + +Moreover, the negotiation information on serdes links comes in two +varieties - SGMII mode, where the PHY provides its speed/duplex/flow +control information to the MAC, and 1000base-X mode where both ends +exchange their abilities and each resolve the link capabilities. + +This means we need a more flexible means to support these arrangements, +particularly with the hotpluggable nature of SFP, where the PHY can +be attached or detached after the network device has been brought up. + +Ethtool information can come from multiple sources: +- we may have a PHY operating in either SGMII or 1000base-X mode, in + which case we take ethtool/mii data directly from the PHY. +- we may have a optical SFP module without a PHY, with the MAC + operating in 1000base-X mode - the ethtool/mii data needs to come + from the MAC. +- we may have a copper SFP module with a PHY whic can't be accessed, + which means we need to take ethtool/mii data from the MAC. + +Phylink aims to solve this by providing an intermediary between the +MAC and PHY, providing a safe way for PHYs to be hotplugged, and +allowing a SFP driver to reconfigure the serdes connection. + +Phylink also takes over support of fixed link connections, where +the speed/duplex/flow control are fixed, but link status may be +controlled by a GPIO signal. By avoiding the fixed-phy implementation, +phylink can provide a faster response to link events: fixed-phy has +to wait for phylib to operate its state machine, which can take +several seconds. In comparison, phylink takes milliseconds. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/Kconfig | 10 + + drivers/net/phy/Makefile | 1 + + drivers/net/phy/phy_device.c | 1 + + drivers/net/phy/phylink.c | 816 +++++++++++++++++++++++++++++++++++++++++++ + include/linux/phy.h | 2 + + include/linux/phylink.h | 70 ++++ + 6 files changed, 900 insertions(+) + create mode 100644 drivers/net/phy/phylink.c + create mode 100644 include/linux/phylink.h + +--- a/drivers/net/phy/Kconfig ++++ b/drivers/net/phy/Kconfig +@@ -10,6 +10,16 @@ menuconfig PHYLIB + devices. This option provides infrastructure for + managing PHY devices. + ++config PHYLINK ++ tristate ++ depends on NETDEVICES ++ select PHYLIB ++ select SWPHY ++ help ++ PHYlink models the link between the PHY and MAC, allowing fixed ++ configuration links, PHYs, and Serdes links with MAC level ++ autonegotiation modes. ++ + if PHYLIB + + config MDIO_BOARDINFO +--- a/drivers/net/phy/Makefile ++++ b/drivers/net/phy/Makefile +@@ -5,6 +5,7 @@ libphy-$(CONFIG_SWPHY) += swphy.o + + obj-$(CONFIG_MDIO_BOARDINFO) += mdio-boardinfo.o + ++obj-$(CONFIG_PHYLINK) += phylink.o + obj-$(CONFIG_PHYLIB) += libphy.o + obj-$(CONFIG_SWCONFIG) += swconfig.o + obj-$(CONFIG_AQUANTIA_PHY) += aquantia.o +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -754,6 +754,7 @@ void phy_detach(struct phy_device *phyde + phydev->attached_dev->phydev = NULL; + phydev->attached_dev = NULL; + phy_suspend(phydev); ++ phydev->phylink = NULL; + + /* If the device had no specific driver before (i.e. - it + * was using the generic driver), we unbind the device +--- /dev/null ++++ b/drivers/net/phy/phylink.c +@@ -0,0 +1,816 @@ ++/* ++ * phylink models the MAC to optional PHY connection, supporting ++ * technologies such as SFP cages where the PHY is hot-pluggable. ++ * ++ * Copyright (C) 2015 Russell King ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++#include <linux/ethtool.h> ++#include <linux/export.h> ++#include <linux/gpio/consumer.h> ++#include <linux/netdevice.h> ++#include <linux/of.h> ++#include <linux/of_mdio.h> ++#include <linux/phy.h> ++#include <linux/phy_fixed.h> ++#include <linux/phylink.h> ++#include <linux/spinlock.h> ++#include <linux/workqueue.h> ++ ++#include "swphy.h" ++ ++#define SUPPORTED_INTERFACES \ ++ (SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE | \ ++ SUPPORTED_BNC | SUPPORTED_AUI | SUPPORTED_Backplane) ++#define ADVERTISED_INTERFACES \ ++ (ADVERTISED_TP | ADVERTISED_MII | ADVERTISED_FIBRE | \ ++ ADVERTISED_BNC | ADVERTISED_AUI | ADVERTISED_Backplane) ++ ++enum { ++ PHYLINK_DISABLE_STOPPED, ++}; ++ ++struct phylink { ++ struct net_device *netdev; ++ const struct phylink_mac_ops *ops; ++ struct mutex config_mutex; ++ ++ unsigned long phylink_disable_state; /* bitmask of disables */ ++ struct phy_device *phydev; ++ phy_interface_t link_interface; /* PHY_INTERFACE_xxx */ ++ u8 link_an_mode; /* MLO_AN_xxx */ ++ u8 link_port; /* The current non-phy ethtool port */ ++ u32 link_port_support; /* SUPPORTED_xxx ethtool for ports */ ++ ++ /* The link configuration settings */ ++ struct phylink_link_state link_config; ++ struct gpio_desc *link_gpio; ++ ++ struct mutex state_mutex; /* may be taken within config_mutex */ ++ struct phylink_link_state phy_state; ++ struct work_struct resolve; ++ ++ bool mac_link_up; ++}; ++ ++static const char *phylink_an_mode_str(unsigned int mode) ++{ ++ static const char *modestr[] = { ++ [MLO_AN_PHY] = "phy", ++ [MLO_AN_FIXED] = "fixed", ++ [MLO_AN_SGMII] = "SGMII", ++ [MLO_AN_8023Z] = "802.3z", ++ }; ++ ++ return mode < ARRAY_SIZE(modestr) ? modestr[mode] : "unknown"; ++} ++ ++static int phylink_parse_fixedlink(struct phylink *pl, struct device_node *np) ++{ ++ struct device_node *fixed_node; ++ int ret, len; ++ ++ fixed_node = of_get_child_by_name(np, "fixed-link"); ++ if (fixed_node) { ++ struct gpio_desc *desc; ++ u32 speed; ++ ++ ret = of_property_read_u32(fixed_node, "speed", &speed); ++ ++ pl->link_an_mode = MLO_AN_FIXED; ++ pl->link_config.link = 1; ++ pl->link_config.an_complete = 1; ++ pl->link_config.speed = speed; ++ pl->link_config.duplex = DUPLEX_HALF; ++ pl->link_config.pause = MLO_PAUSE_NONE; ++ ++ if (of_property_read_bool(fixed_node, "full-duplex")) ++ pl->link_config.duplex = DUPLEX_FULL; ++ if (of_property_read_bool(fixed_node, "pause")) ++ pl->link_config.pause |= MLO_PAUSE_SYM; ++ if (of_property_read_bool(fixed_node, "asym-pause")) ++ pl->link_config.pause |= MLO_PAUSE_ASYM; ++ ++ if (ret == 0) { ++ desc = fwnode_get_named_gpiod(&fixed_node->fwnode, ++ "link-gpios"); ++ ++ if (!IS_ERR(desc)) ++ pl->link_gpio = desc; ++ else if (desc == ERR_PTR(-EPROBE_DEFER)) ++ ret = -EPROBE_DEFER; ++ } ++ of_node_put(fixed_node); ++ } else { ++ const __be32 *fixed_prop; ++ ++ fixed_prop = of_get_property(np, "fixed-link", &len); ++ if (fixed_prop && len == 5 * sizeof(*fixed_prop)) { ++ pl->link_config.duplex = be32_to_cpu(fixed_prop[1]) ? ++ DUPLEX_FULL : DUPLEX_HALF; ++ pl->link_config.speed = be32_to_cpu(fixed_prop[2]); ++ pl->link_config.pause = MLO_PAUSE_NONE; ++ if (be32_to_cpu(fixed_prop[3])) ++ pl->link_config.pause |= MLO_PAUSE_SYM; ++ if (be32_to_cpu(fixed_prop[4])) ++ pl->link_config.pause |= MLO_PAUSE_ASYM; ++ ++ pl->link_an_mode = MLO_AN_FIXED; ++ } ++ ret = 0; ++ } ++ ++ if (pl->link_an_mode == MLO_AN_FIXED) { ++ /* Generate the supported/advertising masks */ ++ if (pl->link_config.pause & MLO_PAUSE_SYM) { ++ pl->link_config.supported |= SUPPORTED_Pause; ++ pl->link_config.advertising |= ADVERTISED_Pause; ++ } ++ if (pl->link_config.pause & MLO_PAUSE_ASYM) { ++ pl->link_config.supported |= SUPPORTED_Asym_Pause; ++ pl->link_config.advertising |= ADVERTISED_Asym_Pause; ++ } ++ ++ if (pl->link_config.speed > SPEED_1000 && ++ pl->link_config.duplex != DUPLEX_FULL) ++ netdev_warn(pl->netdev, "fixed link specifies half duplex for %dMbps link?\n", ++ pl->link_config.speed); ++ ++#define S(spd) \ ++ pl->link_config.supported |= pl->link_config.duplex ? \ ++ SUPPORTED_##spd##_Full : SUPPORTED_##spd##_Half ++#define A(spd) \ ++ pl->link_config.advertising |= pl->link_config.duplex ? \ ++ ADVERTISED_##spd##_Full : ADVERTISED_##spd##_Half ++#define C(spd, tech) \ ++ case spd: \ ++ S(spd##tech); \ ++ A(spd##tech); \ ++ break ++ switch (pl->link_config.speed) { ++ C(10, baseT); ++ C(100, baseT); ++ C(1000, baseT); ++#undef S ++#undef A ++#define S(spd) pl->link_config.supported |= SUPPORTED_##spd##_Full ++#define A(spd) pl->link_config.advertising |= ADVERTISED_##spd##_Full ++ C(2500, baseX); ++ C(10000, baseT); ++ } ++#undef S ++#undef A ++#undef C ++ } ++ return ret; ++} ++ ++static int phylink_parse_managed(struct phylink *pl, struct device_node *np) ++{ ++ const char *managed; ++ ++ if (of_property_read_string(np, "managed", &managed) == 0 && ++ strcmp(managed, "in-band-status") == 0) { ++ if (pl->link_an_mode == MLO_AN_FIXED) { ++ netdev_err(pl->netdev, ++ "can't use both fixed-link and in-band-status\n"); ++ return -EINVAL; ++ } ++ pl->link_an_mode = MLO_AN_SGMII; ++ pl->link_config.an_enabled = true; ++ } ++ ++ return 0; ++} ++ ++ ++static int phylink_get_support(struct phylink *pl, unsigned int mode) ++{ ++ struct phylink_link_state state = pl->link_config; ++ int ret; ++ ++ ret = pl->ops->mac_get_support(pl->netdev, mode, &state); ++ if (ret == 0) { ++ pl->link_an_mode = mode; ++ pl->link_config = state; ++ } ++ ++ return ret; ++} ++ ++static void phylink_mac_config(struct phylink *pl, ++ const struct phylink_link_state *state) ++{ ++ pl->ops->mac_config(pl->netdev, pl->link_an_mode, state); ++} ++ ++static void phylink_mac_an_restart(struct phylink *pl) ++{ ++ if (pl->link_config.an_enabled) ++ pl->ops->mac_an_restart(pl->netdev, pl->link_an_mode); ++} ++ ++static int phylink_get_mac_state(struct phylink *pl, struct phylink_link_state *state) ++{ ++ struct net_device *ndev = pl->netdev; ++ ++ state->supported = pl->link_config.supported; ++ state->advertising = pl->link_config.advertising; ++ state->an_enabled = pl->link_config.an_enabled; ++ state->link = 1; ++ state->sync = 1; ++ ++ return pl->ops->mac_link_state(ndev, state); ++} ++ ++/* The fixed state is... fixed except for the link state, ++ * which may be determined by a GPIO. ++ */ ++static void phylink_get_fixed_state(struct phylink *pl, struct phylink_link_state *state) ++{ ++ *state = pl->link_config; ++ if (pl->link_gpio) ++ state->link = !!gpiod_get_value(pl->link_gpio); ++} ++ ++extern const char *phy_speed_to_str(int speed); ++ ++static void phylink_resolve(struct work_struct *w) ++{ ++ struct phylink *pl = container_of(w, struct phylink, resolve); ++ struct phylink_link_state link_state; ++ struct net_device *ndev = pl->netdev; ++ ++ mutex_lock(&pl->state_mutex); ++ if (pl->phylink_disable_state) { ++ link_state.link = false; ++ } else { ++ switch (pl->link_an_mode) { ++ case MLO_AN_PHY: ++ link_state = pl->phy_state; ++ break; ++ ++ case MLO_AN_FIXED: ++ phylink_get_fixed_state(pl, &link_state); ++ break; ++ ++ case MLO_AN_SGMII: ++ phylink_get_mac_state(pl, &link_state); ++ if (pl->phydev) ++ link_state.link = link_state.link && ++ pl->phy_state.link; ++ break; ++ ++ case MLO_AN_8023Z: ++ phylink_get_mac_state(pl, &link_state); ++ break; ++ } ++ } ++ ++ if (link_state.link != netif_carrier_ok(ndev)) { ++ if (!link_state.link) { ++ netif_carrier_off(ndev); ++ pl->ops->mac_link_down(ndev, pl->link_an_mode); ++ netdev_info(ndev, "Link is Down\n"); ++ } else { ++ /* If we have a PHY, we need the MAC updated with ++ * the current link parameters (eg, in SGMII mode, ++ * with flow control status.) ++ */ ++ if (pl->phydev) ++ phylink_mac_config(pl, &link_state); ++ ++ pl->ops->mac_link_up(ndev, pl->link_an_mode); ++ ++ netif_carrier_on(ndev); ++ ++ netdev_info(ndev, ++ "Link is Up - %s/%s - flow control %s\n", ++ phy_speed_to_str(link_state.speed), ++ link_state.duplex ? "Full" : "Half", ++ link_state.pause ? "rx/tx" : "off"); ++ } ++ } ++ mutex_unlock(&pl->state_mutex); ++} ++ ++static void phylink_run_resolve(struct phylink *pl) ++{ ++ if (!pl->phylink_disable_state) ++ queue_work(system_power_efficient_wq, &pl->resolve); ++} ++ ++struct phylink *phylink_create(struct net_device *ndev, struct device_node *np, ++ phy_interface_t iface, const struct phylink_mac_ops *ops) ++{ ++ struct phylink *pl; ++ int ret; ++ ++ pl = kzalloc(sizeof(*pl), GFP_KERNEL); ++ if (!pl) ++ return ERR_PTR(-ENOMEM); ++ ++ mutex_init(&pl->state_mutex); ++ mutex_init(&pl->config_mutex); ++ INIT_WORK(&pl->resolve, phylink_resolve); ++ pl->netdev = ndev; ++ pl->link_interface = iface; ++ pl->link_port_support = SUPPORTED_MII; ++ pl->link_port = PORT_MII; ++ pl->ops = ops; ++ __set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); ++ ++ ret = phylink_parse_fixedlink(pl, np); ++ if (ret < 0) { ++ kfree(pl); ++ return ERR_PTR(ret); ++ } ++ ++ ret = phylink_parse_managed(pl, np); ++ if (ret < 0) { ++ kfree(pl); ++ return ERR_PTR(ret); ++ } ++ ++ ret = phylink_get_support(pl, pl->link_an_mode); ++ if (ret) { ++ kfree(pl); ++ return ERR_PTR(ret); ++ } ++ ++ return pl; ++} ++EXPORT_SYMBOL_GPL(phylink_create); ++ ++void phylink_destroy(struct phylink *pl) ++{ ++ cancel_work_sync(&pl->resolve); ++ kfree(pl); ++} ++EXPORT_SYMBOL_GPL(phylink_destroy); ++ ++void phylink_phy_change(struct phy_device *phy, bool up, bool do_carrier) ++{ ++ struct phylink *pl = phy->phylink; ++ ++ mutex_lock(&pl->state_mutex); ++ pl->phy_state.speed = phy->speed; ++ pl->phy_state.duplex = phy->duplex; ++ pl->phy_state.pause = MLO_PAUSE_NONE; ++ if (phy->pause) ++ pl->phy_state.pause |= MLO_PAUSE_SYM; ++ if (phy->asym_pause) ++ pl->phy_state.pause |= MLO_PAUSE_ASYM; ++ pl->phy_state.link = up; ++ mutex_unlock(&pl->state_mutex); ++ ++ phylink_run_resolve(pl); ++ ++ netdev_dbg(pl->netdev, "phy link %s\n", up ? "up" : "down"); ++} ++ ++static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy) ++{ ++ mutex_lock(&pl->config_mutex); ++ phy->phylink = pl; ++ phy->phy_link_change = phylink_phy_change; ++ ++ netdev_info(pl->netdev, ++ "PHY [%s] driver [%s]\n", dev_name(&phy->dev), ++ phy->drv->name); ++ ++ mutex_lock(&pl->state_mutex); ++ pl->phydev = phy; ++ ++ /* Restrict the phy advertisment to the union of the PHY and ++ * MAC-level advert. ++ */ ++ phy->advertising &= ADVERTISED_INTERFACES | ++ pl->link_config.advertising; ++ mutex_unlock(&pl->state_mutex); ++ ++ phy_start_machine(phy); ++ if (phy->irq > 0) ++ phy_start_interrupts(phy); ++ ++ mutex_unlock(&pl->config_mutex); ++ ++ return 0; ++} ++ ++int phylink_connect_phy(struct phylink *pl, struct phy_device *phy) ++{ ++ int ret; ++ ++ ret = phy_attach_direct(pl->netdev, phy, 0, pl->link_interface); ++ if (ret) ++ return ret; ++ ++ ret = phylink_bringup_phy(pl, phy); ++ if (ret) ++ phy_detach(phy); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_connect_phy); ++ ++int phylink_of_phy_connect(struct phylink *pl, struct device_node *dn) ++{ ++ struct device_node *phy_node; ++ struct phy_device *phy_dev; ++ int ret; ++ ++ /* Fixed links are handled without needing a PHY */ ++ if (pl->link_an_mode == MLO_AN_FIXED) ++ return 0; ++ ++ phy_node = of_parse_phandle(dn, "phy-handle", 0); ++ if (!phy_node) ++ phy_node = of_parse_phandle(dn, "phy", 0); ++ if (!phy_node) ++ phy_node = of_parse_phandle(dn, "phy-device", 0); ++ ++ if (!phy_node) { ++ if (pl->link_an_mode == MLO_AN_PHY) { ++ netdev_err(pl->netdev, "unable to find PHY node\n"); ++ return -ENODEV; ++ } ++ return 0; ++ } ++ ++ phy_dev = of_phy_attach(pl->netdev, phy_node, 0, pl->link_interface); ++ /* We're done with the phy_node handle */ ++ of_node_put(phy_node); ++ ++ if (!phy_dev) ++ return -ENODEV; ++ ++ ret = phylink_bringup_phy(pl, phy_dev); ++ if (ret) ++ phy_detach(phy_dev); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_of_phy_connect); ++ ++void phylink_disconnect_phy(struct phylink *pl) ++{ ++ struct phy_device *phy; ++ ++ mutex_lock(&pl->config_mutex); ++ phy = pl->phydev; ++ ++ mutex_lock(&pl->state_mutex); ++ pl->phydev = NULL; ++ mutex_unlock(&pl->state_mutex); ++ flush_work(&pl->resolve); ++ ++ if (phy) ++ phy_disconnect(phy); ++ ++ mutex_unlock(&pl->config_mutex); ++} ++EXPORT_SYMBOL_GPL(phylink_disconnect_phy); ++ ++void phylink_mac_change(struct phylink *pl, bool up) ++{ ++ phylink_run_resolve(pl); ++ netdev_dbg(pl->netdev, "mac link %s\n", up ? "up" : "down"); ++} ++EXPORT_SYMBOL_GPL(phylink_mac_change); ++ ++void phylink_start(struct phylink *pl) ++{ ++ mutex_lock(&pl->config_mutex); ++ ++ netdev_info(pl->netdev, "configuring for %s link mode\n", ++ phylink_an_mode_str(pl->link_an_mode)); ++ ++ /* Apply the link configuration to the MAC when starting. This allows ++ * a fixed-link to start with the correct parameters, and also ++ * ensures that we set the appropriate advertisment for Serdes links. ++ */ ++ phylink_mac_config(pl, &pl->link_config); ++ ++ clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); ++ phylink_run_resolve(pl); ++ ++ if (pl->phydev) ++ phy_start(pl->phydev); ++ ++ mutex_unlock(&pl->config_mutex); ++} ++EXPORT_SYMBOL_GPL(phylink_start); ++ ++void phylink_stop(struct phylink *pl) ++{ ++ mutex_lock(&pl->config_mutex); ++ ++ if (pl->phydev) ++ phy_stop(pl->phydev); ++ ++ set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); ++ flush_work(&pl->resolve); ++ ++ pl->mac_link_up = false; ++ ++ mutex_unlock(&pl->config_mutex); ++} ++EXPORT_SYMBOL_GPL(phylink_stop); ++ ++static void phylink_get_ethtool(const struct phylink_link_state *state, ++ struct ethtool_cmd *cmd) ++{ ++ cmd->supported &= SUPPORTED_INTERFACES; ++ cmd->supported |= state->supported; ++ cmd->advertising &= ADVERTISED_INTERFACES; ++ cmd->advertising |= state->advertising; ++ ethtool_cmd_speed_set(cmd, state->speed); ++ cmd->duplex = state->duplex; ++ ++ cmd->autoneg = state->an_enabled ? AUTONEG_ENABLE : AUTONEG_DISABLE; ++} ++ ++static int phylink_ethtool_gset(struct phylink *pl, struct ethtool_cmd *cmd) ++{ ++ struct phylink_link_state link_state; ++ int ret; ++ ++ if (pl->phydev) { ++ ret = phy_ethtool_gset(pl->phydev, cmd); ++ if (ret) ++ return ret; ++ ++ cmd->supported &= SUPPORTED_INTERFACES | ++ pl->link_config.supported; ++ } else { ++ cmd->supported = pl->link_port_support; ++ cmd->transceiver = XCVR_EXTERNAL; ++ cmd->port = pl->link_port; ++ } ++ ++ switch (pl->link_an_mode) { ++ case MLO_AN_FIXED: ++ /* We are using fixed settings. Report these as the ++ * current link settings - and note that these also ++ * represent the supported speeds/duplex/pause modes. ++ */ ++ phylink_get_fixed_state(pl, &link_state); ++ phylink_get_ethtool(&link_state, cmd); ++ break; ++ ++ case MLO_AN_SGMII: ++ /* If there is a phy attached, then use the reported ++ * settings from the phy with no modification. ++ */ ++ if (pl->phydev) ++ break; ++ ++ case MLO_AN_8023Z: ++ phylink_get_mac_state(pl, &link_state); ++ ++ /* The MAC is reporting the link results from its own PCS ++ * layer via in-band status. Report these as the current ++ * link settings. ++ */ ++ phylink_get_ethtool(&link_state, cmd); ++ break; ++ } ++ ++ return 0; ++} ++ ++int phylink_ethtool_get_settings(struct phylink *pl, struct ethtool_cmd *cmd) ++{ ++ int ret; ++ ++ mutex_lock(&pl->config_mutex); ++ ret = phylink_ethtool_gset(pl, cmd); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_get_settings); ++ ++static int phylink_ethtool_sset(struct phylink *pl, struct ethtool_cmd *cmd) ++{ ++ u32 supported; ++ int ret; ++ ++ /* Calculate the union of the MAC support and attached phy support */ ++ supported = pl->link_config.supported; ++ if (pl->phydev) ++ supported &= pl->phydev->supported; ++ ++ /* Mask out unsupported advertisments */ ++ cmd->advertising &= supported; ++ ++ /* FIXME: should we reject autoneg if phy/mac does not support it? */ ++ ++ if (cmd->autoneg == AUTONEG_DISABLE) { ++ /* Autonegotiation disabled, validate speed and duplex */ ++ if (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) ++ return -EINVAL; ++ ++ /* FIXME: validate speed/duplex against supported */ ++ ++ cmd->advertising &= ~ADVERTISED_Autoneg; ++ } else { ++ /* Autonegotiation enabled, validate advertisment */ ++ /* FIXME: shouldn't we ensure there's some duplex/speeds set */ ++ if (cmd->advertising == 0) ++ return -EINVAL; ++ ++ cmd->advertising |= ADVERTISED_Autoneg; ++ } ++ ++ /* If we have a fixed link (as specified by firmware), refuse ++ * to enable autonegotiation, or change link parameters. ++ */ ++ if (pl->link_an_mode == MLO_AN_FIXED) { ++ if (cmd->autoneg != AUTONEG_DISABLE || ++ ethtool_cmd_speed(cmd) != pl->link_config.speed || ++ cmd->duplex != pl->link_config.duplex) ++ return -EINVAL; ++ } ++ ++ /* If we have a PHY, configure the phy */ ++ if (pl->phydev) { ++ ret = phy_ethtool_sset(pl->phydev, cmd); ++ if (ret) ++ return ret; ++ } ++ ++ mutex_lock(&pl->state_mutex); ++ /* Configure the MAC to match the new settings */ ++ pl->link_config.advertising = cmd->advertising; ++ pl->link_config.speed = cmd->speed; ++ pl->link_config.duplex = cmd->duplex; ++ pl->link_config.an_enabled = cmd->autoneg != AUTONEG_DISABLE; ++ ++ phylink_mac_config(pl, &pl->link_config); ++ phylink_mac_an_restart(pl); ++ mutex_unlock(&pl->state_mutex); ++ ++ return ret; ++} ++ ++int phylink_ethtool_set_settings(struct phylink *pl, struct ethtool_cmd *cmd) ++{ ++ int ret; ++ ++ if (cmd->autoneg != AUTONEG_DISABLE && cmd->autoneg != AUTONEG_ENABLE) ++ return -EINVAL; ++ ++ mutex_lock(&pl->config_mutex); ++ ret = phylink_ethtool_sset(pl, cmd); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_set_settings); ++ ++/* This emulates MII registers for a fixed-mode phy operating as per the ++ * passed in state. "aneg" defines if we report negotiation is possible. ++ * ++ * 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) ++{ ++ struct fixed_phy_status fs; ++ int val; ++ ++ fs.link = state->link; ++ fs.speed = state->speed; ++ fs.duplex = state->duplex; ++ fs.pause = state->pause & MLO_PAUSE_SYM; ++ fs.asym_pause = state->pause & MLO_PAUSE_ASYM; ++ ++ val = swphy_read_reg(reg, &fs); ++ if (reg == MII_BMSR) { ++ if (!state->an_complete) ++ val &= ~BMSR_ANEGCOMPLETE; ++ if (!aneg) ++ val &= ~BMSR_ANEGCAPABLE; ++ } ++ return val; ++} ++ ++static int phylink_mii_read(struct phylink *pl, unsigned int phy_id, ++ unsigned int reg) ++{ ++ struct phylink_link_state state; ++ int val = 0xffff; ++ ++ if (pl->phydev && pl->phydev->addr != phy_id) ++ return mdiobus_read(pl->phydev->bus, phy_id, reg); ++ ++ if (!pl->phydev && phy_id != 0) ++ return val; ++ ++ switch (pl->link_an_mode) { ++ case MLO_AN_FIXED: ++ phylink_get_fixed_state(pl, &state); ++ val = phylink_mii_emul_read(pl->netdev, reg, &state, true); ++ break; ++ ++ case MLO_AN_PHY: ++ val = mdiobus_read(pl->phydev->bus, phy_id, reg); ++ break; ++ ++ case MLO_AN_SGMII: ++ if (pl->phydev) { ++ val = mdiobus_read(pl->phydev->bus, ++ pl->phydev->addr, reg); ++ break; ++ } ++ /* No phy, fall through to reading the MAC end */ ++ case MLO_AN_8023Z: ++ val = phylink_get_mac_state(pl, &state); ++ if (val < 0) ++ return val; ++ ++ val = phylink_mii_emul_read(pl->netdev, reg, &state, true); ++ break; ++ } ++ ++ return val & 0xffff; ++} ++ ++static void phylink_mii_write(struct phylink *pl, unsigned int phy_id, ++ unsigned int reg, unsigned int val) ++{ ++ if (pl->phydev && pl->phydev->addr != phy_id) { ++ mdiobus_write(pl->phydev->bus, phy_id, reg, val); ++ return; ++ } ++ ++ if (!pl->phydev && phy_id != 0) ++ return; ++ ++ switch (pl->link_an_mode) { ++ case MLO_AN_FIXED: ++ break; ++ ++ case MLO_AN_PHY: ++ mdiobus_write(pl->phydev->bus, pl->phydev->addr, ++ reg, val); ++ break; ++ ++ case MLO_AN_SGMII: ++ if (pl->phydev) { ++ mdiobus_write(pl->phydev->bus, phy_id, reg, val); ++ break; ++ } ++ /* No phy, fall through to reading the MAC end */ ++ case MLO_AN_8023Z: ++ break; ++ } ++} ++ ++int phylink_mii_ioctl(struct phylink *pl, struct ifreq *ifr, int cmd) ++{ ++ struct mii_ioctl_data *mii_data = if_mii(ifr); ++ int val, ret; ++ ++ mutex_lock(&pl->config_mutex); ++ ++ switch (cmd) { ++ case SIOCGMIIPHY: ++ mii_data->phy_id = pl->phydev ? pl->phydev->addr : 0; ++ /* fallthrough */ ++ ++ case SIOCGMIIREG: ++ val = phylink_mii_read(pl, mii_data->phy_id, mii_data->reg_num); ++ if (val < 0) { ++ ret = val; ++ } else { ++ mii_data->val_out = val; ++ ret = 0; ++ } ++ break; ++ ++ case SIOCSMIIREG: ++ phylink_mii_write(pl, mii_data->phy_id, mii_data->reg_num, ++ mii_data->val_in); ++ ret = 0; ++ break; ++ ++ default: ++ ret = -EOPNOTSUPP; ++ if (pl->phydev) ++ ret = phy_mii_ioctl(pl->phydev, ifr, cmd); ++ break; ++ } ++ ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_mii_ioctl); ++ ++MODULE_LICENSE("GPL"); +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -147,6 +147,7 @@ static inline const char *phy_modes(phy_ + #define MII_ADDR_C45 (1<<30) + + struct device; ++struct phylink; + struct sk_buff; + + /* +@@ -429,6 +430,7 @@ struct phy_device { + + struct mutex lock; + ++ struct phylink *phylink; + struct net_device *attached_dev; + + u8 mdix; +--- /dev/null ++++ b/include/linux/phylink.h +@@ -0,0 +1,70 @@ ++#ifndef NETDEV_PCS_H ++#define NETDEV_PCS_H ++ ++#include <linux/phy.h> ++#include <linux/spinlock.h> ++#include <linux/workqueue.h> ++ ++struct device_node; ++struct ethtool_cmd; ++struct net_device; ++ ++enum { ++ MLO_PAUSE_NONE, ++ MLO_PAUSE_ASYM = BIT(0), ++ MLO_PAUSE_SYM = BIT(1), ++ ++ MLO_AN_PHY = 0, ++ MLO_AN_FIXED, ++ MLO_AN_SGMII, ++ MLO_AN_8023Z, ++}; ++ ++struct phylink_link_state { ++ u32 supported; ++ u32 advertising; ++ u32 lp_advertising; ++ int speed; ++ int duplex; ++ int pause; ++ unsigned int link:1; ++ unsigned int sync:1; ++ unsigned int an_enabled:1; ++ unsigned int an_complete:1; ++}; ++ ++struct phylink_mac_ops { ++ /* Get the ethtool supported mask for the indicated mode */ ++ int (*mac_get_support)(struct net_device *, unsigned int mode, ++ struct phylink_link_state *); ++ ++ /* Read the current link state from the hardware */ ++ int (*mac_link_state)(struct net_device *, struct phylink_link_state *); ++ ++ /* Configure the MAC */ ++ void (*mac_config)(struct net_device *, unsigned int mode, ++ const struct phylink_link_state *); ++ void (*mac_an_restart)(struct net_device *, unsigned int mode); ++ ++ void (*mac_link_down)(struct net_device *, unsigned int mode); ++ void (*mac_link_up)(struct net_device *, unsigned int mode); ++}; ++ ++struct phylink *phylink_create(struct net_device *, struct device_node *, ++ phy_interface_t iface, const struct phylink_mac_ops *ops); ++void phylink_destroy(struct phylink *); ++ ++int phylink_connect_phy(struct phylink *, struct phy_device *); ++int phylink_of_phy_connect(struct phylink *, struct device_node *); ++void phylink_disconnect_phy(struct phylink *); ++ ++void phylink_mac_change(struct phylink *, bool up); ++ ++void phylink_start(struct phylink *); ++void phylink_stop(struct phylink *); ++ ++int phylink_ethtool_get_settings(struct phylink *, struct ethtool_cmd *); ++int phylink_ethtool_set_settings(struct phylink *, struct ethtool_cmd *); ++int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); ++ ++#endif diff --git a/target/linux/mvebu/patches-4.4/131-phylink-add-hooks-for-SFP-support.patch b/target/linux/mvebu/patches-4.4/131-phylink-add-hooks-for-SFP-support.patch new file mode 100644 index 0000000..64a1c1f --- /dev/null +++ b/target/linux/mvebu/patches-4.4/131-phylink-add-hooks-for-SFP-support.patch @@ -0,0 +1,156 @@ +From 0a0c4b3dd4f34df4532f254a5940b520015d766f Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 24 Sep 2015 11:01:13 +0100 +Subject: [PATCH 719/744] phylink: add hooks for SFP support + +Add support to phylink for SFP, which needs to control and configure +the ethernet MAC link state. Specifically, SFP needs to: + +1. set the negotiation mode between SGMII and 1000base-X +2. attach and detach the module PHY +3. prevent the link coming up when errors are reported + +In the absence of a PHY, we also need to set the ethtool port type +according to the module plugged in. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phylink.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++ + include/linux/phylink.h | 6 ++++ + 2 files changed, 88 insertions(+) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -11,6 +11,7 @@ + #include <linux/ethtool.h> + #include <linux/export.h> + #include <linux/gpio/consumer.h> ++#include <linux/list.h> + #include <linux/netdevice.h> + #include <linux/of.h> + #include <linux/of_mdio.h> +@@ -29,11 +30,16 @@ + (ADVERTISED_TP | ADVERTISED_MII | ADVERTISED_FIBRE | \ + ADVERTISED_BNC | ADVERTISED_AUI | ADVERTISED_Backplane) + ++static LIST_HEAD(phylinks); ++static DEFINE_MUTEX(phylink_mutex); ++ + enum { + PHYLINK_DISABLE_STOPPED, ++ PHYLINK_DISABLE_LINK, + }; + + struct phylink { ++ struct list_head node; + struct net_device *netdev; + const struct phylink_mac_ops *ops; + struct mutex config_mutex; +@@ -341,12 +347,20 @@ struct phylink *phylink_create(struct ne + return ERR_PTR(ret); + } + ++ mutex_lock(&phylink_mutex); ++ list_add_tail(&pl->node, &phylinks); ++ mutex_unlock(&phylink_mutex); ++ + return pl; + } + EXPORT_SYMBOL_GPL(phylink_create); + + void phylink_destroy(struct phylink *pl) + { ++ mutex_lock(&phylink_mutex); ++ list_del(&pl->node); ++ mutex_unlock(&phylink_mutex); ++ + cancel_work_sync(&pl->resolve); + kfree(pl); + } +@@ -813,4 +827,72 @@ int phylink_mii_ioctl(struct phylink *pl + } + EXPORT_SYMBOL_GPL(phylink_mii_ioctl); + ++ ++ ++void phylink_disable(struct phylink *pl) ++{ ++ set_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); ++ flush_work(&pl->resolve); ++ ++ netif_carrier_off(pl->netdev); ++} ++EXPORT_SYMBOL_GPL(phylink_disable); ++ ++void phylink_enable(struct phylink *pl) ++{ ++ clear_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); ++ phylink_run_resolve(pl); ++} ++EXPORT_SYMBOL_GPL(phylink_enable); ++ ++void phylink_set_link_port(struct phylink *pl, u32 support, u8 port) ++{ ++ WARN_ON(support & ~SUPPORTED_INTERFACES); ++ ++ mutex_lock(&pl->config_mutex); ++ pl->link_port_support = support; ++ pl->link_port = port; ++ mutex_unlock(&pl->config_mutex); ++} ++EXPORT_SYMBOL_GPL(phylink_set_link_port); ++ ++int phylink_set_link_an_mode(struct phylink *pl, unsigned int mode) ++{ ++ int ret = 0; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->link_an_mode != mode) { ++ ret = phylink_get_support(pl, mode); ++ if (ret == 0) { ++ if (!test_bit(PHYLINK_DISABLE_STOPPED, ++ &pl->phylink_disable_state)) ++ phylink_mac_config(pl, &pl->link_config); ++ ++ netdev_info(pl->netdev, "switched to %s link mode\n", ++ phylink_an_mode_str(mode)); ++ } ++ } ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_set_link_an_mode); ++ ++struct phylink *phylink_lookup_by_netdev(struct net_device *ndev) ++{ ++ struct phylink *pl, *found = NULL; ++ ++ mutex_lock(&phylink_mutex); ++ list_for_each_entry(pl, &phylinks, node) ++ if (pl->netdev == ndev) { ++ found = pl; ++ break; ++ } ++ ++ mutex_unlock(&phylink_mutex); ++ ++ return found; ++} ++EXPORT_SYMBOL_GPL(phylink_lookup_by_netdev); ++ + MODULE_LICENSE("GPL"); +--- a/include/linux/phylink.h ++++ b/include/linux/phylink.h +@@ -67,4 +67,10 @@ int phylink_ethtool_get_settings(struct + int phylink_ethtool_set_settings(struct phylink *, struct ethtool_cmd *); + int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); + ++void phylink_set_link_port(struct phylink *pl, u32 support, u8 port); ++int phylink_set_link_an_mode(struct phylink *pl, unsigned int mode); ++void phylink_disable(struct phylink *pl); ++void phylink_enable(struct phylink *pl); ++struct phylink *phylink_lookup_by_netdev(struct net_device *ndev); ++ + #endif diff --git a/target/linux/mvebu/patches-4.4/132-sfp-add-phylink-based-SFP-module-support.patch b/target/linux/mvebu/patches-4.4/132-sfp-add-phylink-based-SFP-module-support.patch new file mode 100644 index 0000000..07b1766 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/132-sfp-add-phylink-based-SFP-module-support.patch @@ -0,0 +1,1382 @@ +From bf0a000960234c0e773fadea47240c3cda0cab02 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sat, 12 Sep 2015 18:43:39 +0100 +Subject: [PATCH 720/744] sfp: add phylink based SFP module support + +Add support for SFP hotpluggable modules via phylink. This supports +both copper and optical SFP modules, which require different Serdes +modes in order to properly negotiate the link. + +Optical SFP modules typically require the Serdes link to be talking +1000base-X mode - this is the gigabit ethernet mode defined by the +802.3 standard. + +Copper SFP modules typically integrate a PHY in the module to convert +from Serdes to copper, and the PHY will be configured by the vendor +to either present a 1000base-X Serdes link (for fixed 1000base-T) or +a SGMII Serdes link. However, this is vendor defined, so we instead +detect the PHY, switch the link to SGMII mode, and use traditional +PHY based negotiation. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/Kconfig | 5 + + drivers/net/phy/Makefile | 1 + + drivers/net/phy/sfp.c | 986 +++++++++++++++++++++++++++++++++++++++++++++++ + include/linux/sfp.h | 339 ++++++++++++++++ + 4 files changed, 1331 insertions(+) + create mode 100644 drivers/net/phy/sfp.c + create mode 100644 include/linux/sfp.h + +--- a/drivers/net/phy/Kconfig ++++ b/drivers/net/phy/Kconfig +@@ -225,6 +225,11 @@ config FIXED_PHY + + Currently tested with mpc866ads and mpc8349e-mitx. + ++config SFP ++ tristate "SFP cage support" ++ depends on I2C && PHYLINK ++ select MDIO_I2C ++ + config MDIO_BITBANG + tristate "Support for bitbanged MDIO buses" + help +--- a/drivers/net/phy/Makefile ++++ b/drivers/net/phy/Makefile +@@ -61,3 +61,4 @@ obj-$(CONFIG_MDIO_MOXART) += mdio-moxart + obj-$(CONFIG_MDIO_BCM_UNIMAC) += mdio-bcm-unimac.o + obj-$(CONFIG_MICROCHIP_PHY) += microchip.o + obj-$(CONFIG_MDIO_BCM_IPROC) += mdio-bcm-iproc.o ++obj-$(CONFIG_SFP) += sfp.o +--- /dev/null ++++ b/drivers/net/phy/sfp.c +@@ -0,0 +1,986 @@ ++#include <linux/delay.h> ++#include <linux/gpio.h> ++#include <linux/i2c.h> ++#include <linux/interrupt.h> ++#include <linux/jiffies.h> ++#include <linux/module.h> ++#include <linux/mutex.h> ++#include <linux/netdevice.h> ++#include <linux/of.h> ++#include <linux/of_net.h> ++#include <linux/phylink.h> ++#include <linux/platform_device.h> ++#include <linux/sfp.h> ++#include <linux/slab.h> ++#include <linux/workqueue.h> ++ ++#include "mdio-i2c.h" ++#include "swphy.h" ++ ++enum { ++ GPIO_MODDEF0, ++ GPIO_LOS, ++ GPIO_TX_FAULT, ++ GPIO_TX_DISABLE, ++ GPIO_RATE_SELECT, ++ GPIO_MAX, ++ ++ SFP_F_PRESENT = BIT(GPIO_MODDEF0), ++ SFP_F_LOS = BIT(GPIO_LOS), ++ SFP_F_TX_FAULT = BIT(GPIO_TX_FAULT), ++ SFP_F_TX_DISABLE = BIT(GPIO_TX_DISABLE), ++ SFP_F_RATE_SELECT = BIT(GPIO_RATE_SELECT), ++ ++ SFP_E_INSERT = 0, ++ SFP_E_REMOVE, ++ SFP_E_DEV_DOWN, ++ SFP_E_DEV_UP, ++ SFP_E_TX_FAULT, ++ SFP_E_TX_CLEAR, ++ SFP_E_LOS_HIGH, ++ SFP_E_LOS_LOW, ++ SFP_E_TIMEOUT, ++ ++ SFP_MOD_EMPTY = 0, ++ SFP_MOD_PROBE, ++ SFP_MOD_PRESENT, ++ SFP_MOD_ERROR, ++ ++ SFP_DEV_DOWN = 0, ++ SFP_DEV_UP, ++ ++ SFP_S_DOWN = 0, ++ SFP_S_INIT, ++ SFP_S_WAIT_LOS, ++ SFP_S_LINK_UP, ++ SFP_S_TX_FAULT, ++ SFP_S_REINIT, ++ SFP_S_TX_DISABLE, ++}; ++ ++static const char *gpio_of_names[] = { ++ "moddef0", ++ "los", ++ "tx-fault", ++ "tx-disable", ++ "rate-select", ++}; ++ ++static const enum gpiod_flags gpio_flags[] = { ++ GPIOD_IN, ++ GPIOD_IN, ++ GPIOD_IN, ++ GPIOD_ASIS, ++ GPIOD_ASIS, ++}; ++ ++#define T_INIT_JIFFIES msecs_to_jiffies(300) ++#define T_RESET_US 10 ++#define T_FAULT_RECOVER msecs_to_jiffies(1000) ++ ++/* SFP module presence detection is poor: the three MOD DEF signals are ++ * 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. Try to work around this ++ * design bug by waiting 50ms before probing, and then retry every 250ms. ++ */ ++#define T_PROBE_INIT msecs_to_jiffies(50) ++#define T_PROBE_RETRY msecs_to_jiffies(250) ++ ++/* ++ * SFP modules appear to always have their PHY configured for bus address ++ * 0x56 (which with mdio-i2c, translates to a PHY address of 22). ++ */ ++#define SFP_PHY_ADDR 22 ++ ++/* ++ * Give this long for the PHY to reset. ++ */ ++#define T_PHY_RESET_MS 50 ++ ++static DEFINE_MUTEX(sfp_mutex); ++ ++struct sfp { ++ struct device *dev; ++ struct i2c_adapter *i2c; ++ struct mii_bus *i2c_mii; ++ struct net_device *ndev; ++ struct phylink *phylink; ++ struct phy_device *mod_phy; ++ ++ unsigned int (*get_state)(struct sfp *); ++ void (*set_state)(struct sfp *, unsigned int); ++ int (*read)(struct sfp *, bool, u8, void *, size_t); ++ ++ struct gpio_desc *gpio[GPIO_MAX]; ++ ++ unsigned int state; ++ struct delayed_work poll; ++ struct delayed_work timeout; ++ struct mutex sm_mutex; ++ unsigned char sm_mod_state; ++ unsigned char sm_dev_state; ++ unsigned short sm_state; ++ unsigned int sm_retries; ++ ++ struct sfp_eeprom_id id; ++ ++ struct notifier_block netdev_nb; ++}; ++ ++static unsigned long poll_jiffies; ++ ++static unsigned int sfp_gpio_get_state(struct sfp *sfp) ++{ ++ unsigned int i, state, v; ++ ++ for (i = state = 0; i < GPIO_MAX; i++) { ++ if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i]) ++ continue; ++ ++ v = gpiod_get_value_cansleep(sfp->gpio[i]); ++ if (v) ++ state |= BIT(i); ++ } ++ ++ return state; ++} ++ ++static void sfp_gpio_set_state(struct sfp *sfp, unsigned int state) ++{ ++ if (state & SFP_F_PRESENT) { ++ /* If the module is present, drive the signals */ ++ if (sfp->gpio[GPIO_TX_DISABLE]) ++ gpiod_direction_output(sfp->gpio[GPIO_TX_DISABLE], ++ state & SFP_F_TX_DISABLE); ++ if (state & SFP_F_RATE_SELECT) ++ gpiod_direction_output(sfp->gpio[GPIO_RATE_SELECT], ++ state & SFP_F_RATE_SELECT); ++ } else { ++ /* Otherwise, let them float to the pull-ups */ ++ if (sfp->gpio[GPIO_TX_DISABLE]) ++ gpiod_direction_input(sfp->gpio[GPIO_TX_DISABLE]); ++ if (state & SFP_F_RATE_SELECT) ++ gpiod_direction_input(sfp->gpio[GPIO_RATE_SELECT]); ++ } ++} ++ ++static int sfp__i2c_read(struct i2c_adapter *i2c, u8 bus_addr, u8 dev_addr, ++ void *buf, size_t len) ++{ ++ struct i2c_msg msgs[2]; ++ int ret; ++ ++ msgs[0].addr = bus_addr; ++ msgs[0].flags = 0; ++ msgs[0].len = 1; ++ msgs[0].buf = &dev_addr; ++ msgs[1].addr = bus_addr; ++ msgs[1].flags = I2C_M_RD; ++ msgs[1].len = len; ++ msgs[1].buf = buf; ++ ++ ret = i2c_transfer(i2c, msgs, ARRAY_SIZE(msgs)); ++ if (ret < 0) ++ return ret; ++ ++ return ret == ARRAY_SIZE(msgs) ? len : 0; ++} ++ ++static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 addr, void *buf, ++ size_t len) ++{ ++ return sfp__i2c_read(sfp->i2c, a2 ? 0x51 : 0x50, addr, buf, len); ++} ++ ++static int sfp_i2c_configure(struct sfp *sfp, struct i2c_adapter *i2c) ++{ ++ struct mii_bus *i2c_mii; ++ int ret; ++ ++ if (!i2c_check_functionality(i2c, I2C_FUNC_I2C)) ++ return -EINVAL; ++ ++ sfp->i2c = i2c; ++ sfp->read = sfp_i2c_read; ++ ++ i2c_mii = mdio_i2c_alloc(sfp->dev, i2c); ++ if (IS_ERR(i2c_mii)) ++ return PTR_ERR(i2c_mii); ++ ++ i2c_mii->name = "SFP I2C Bus"; ++ i2c_mii->phy_mask = ~0; ++ ++ ret = mdiobus_register(i2c_mii); ++ if (ret < 0) { ++ mdiobus_free(i2c_mii); ++ return ret; ++ } ++ ++ sfp->i2c_mii = i2c_mii; ++ ++ return 0; ++} ++ ++ ++/* Interface */ ++static unsigned int sfp_get_state(struct sfp *sfp) ++{ ++ return sfp->get_state(sfp); ++} ++ ++static void sfp_set_state(struct sfp *sfp, unsigned int state) ++{ ++ sfp->set_state(sfp, state); ++} ++ ++static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) ++{ ++ return sfp->read(sfp, a2, addr, buf, len); ++} ++ ++static unsigned int sfp_check(void *buf, size_t len) ++{ ++ u8 *p, check; ++ ++ for (p = buf, check = 0; len; p++, len--) ++ check += *p; ++ ++ return check; ++} ++ ++/* Helpers */ ++static void sfp_module_tx_disable(struct sfp *sfp) ++{ ++ dev_dbg(sfp->dev, "tx disable %u -> %u\n", ++ sfp->state & SFP_F_TX_DISABLE ? 1 : 0, 1); ++ sfp->state |= SFP_F_TX_DISABLE; ++ sfp_set_state(sfp, sfp->state); ++} ++ ++static void sfp_module_tx_enable(struct sfp *sfp) ++{ ++ dev_dbg(sfp->dev, "tx disable %u -> %u\n", ++ sfp->state & SFP_F_TX_DISABLE ? 1 : 0, 0); ++ sfp->state &= ~SFP_F_TX_DISABLE; ++ sfp_set_state(sfp, sfp->state); ++} ++ ++static void sfp_module_tx_fault_reset(struct sfp *sfp) ++{ ++ unsigned int state = sfp->state; ++ ++ if (state & SFP_F_TX_DISABLE) ++ return; ++ ++ sfp_set_state(sfp, state | SFP_F_TX_DISABLE); ++ ++ udelay(T_RESET_US); ++ ++ sfp_set_state(sfp, state); ++} ++ ++/* SFP state machine */ ++static void sfp_sm_set_timer(struct sfp *sfp, unsigned int timeout) ++{ ++ if (timeout) ++ mod_delayed_work(system_power_efficient_wq, &sfp->timeout, ++ timeout); ++ else ++ cancel_delayed_work(&sfp->timeout); ++} ++ ++static void sfp_sm_next(struct sfp *sfp, unsigned int state, ++ unsigned int timeout) ++{ ++ sfp->sm_state = state; ++ sfp_sm_set_timer(sfp, timeout); ++} ++ ++static void sfp_sm_ins_next(struct sfp *sfp, unsigned int state, unsigned int timeout) ++{ ++ sfp->sm_mod_state = state; ++ sfp_sm_set_timer(sfp, timeout); ++} ++ ++static void sfp_sm_phy_detach(struct sfp *sfp) ++{ ++ phy_stop(sfp->mod_phy); ++ if (sfp->phylink) ++ phylink_disconnect_phy(sfp->phylink); ++ phy_device_remove(sfp->mod_phy); ++ phy_device_free(sfp->mod_phy); ++ sfp->mod_phy = NULL; ++} ++ ++static void sfp_sm_probe_phy(struct sfp *sfp) ++{ ++ struct phy_device *phy; ++ int err; ++ ++ msleep(T_PHY_RESET_MS); ++ ++ phy = mdiobus_scan(sfp->i2c_mii, SFP_PHY_ADDR); ++ if (IS_ERR(phy)) { ++ dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy)); ++ return; ++ } ++ if (!phy) { ++ dev_info(sfp->dev, "no PHY detected\n"); ++ return; ++ } ++ ++ err = phylink_connect_phy(sfp->phylink, phy); ++ if (err) { ++ phy_device_remove(phy); ++ phy_device_free(phy); ++ dev_err(sfp->dev, "phylink_connect_phy failed: %d\n", err); ++ return; ++ } ++ ++ sfp->mod_phy = phy; ++ phy_start(phy); ++} ++ ++static void sfp_sm_link_up(struct sfp *sfp) ++{ ++ if (sfp->phylink) ++ phylink_enable(sfp->phylink); ++ ++ sfp_sm_next(sfp, SFP_S_LINK_UP, 0); ++} ++ ++static void sfp_sm_link_down(struct sfp *sfp) ++{ ++ if (sfp->phylink) ++ phylink_disable(sfp->phylink); ++} ++ ++static void sfp_sm_link_check_los(struct sfp *sfp) ++{ ++ unsigned int los = sfp->state & SFP_F_LOS; ++ ++ /* FIXME: what if neither SFP_OPTIONS_LOS_INVERTED nor ++ * SFP_OPTIONS_LOS_NORMAL are set? For now, we assume ++ * the same as SFP_OPTIONS_LOS_NORMAL set. ++ */ ++ if (sfp->id.ext.options & SFP_OPTIONS_LOS_INVERTED) ++ los ^= SFP_F_LOS; ++ ++ if (los) ++ sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0); ++ else ++ sfp_sm_link_up(sfp); ++} ++ ++static void sfp_sm_fault(struct sfp *sfp, bool warn) ++{ ++ if (sfp->sm_retries && !--sfp->sm_retries) { ++ dev_err(sfp->dev, "module persistently indicates fault, disabling\n"); ++ sfp_sm_next(sfp, SFP_S_TX_DISABLE, 0); ++ } else { ++ if (warn) ++ dev_err(sfp->dev, "module transmit fault indicated\n"); ++ ++ sfp_sm_next(sfp, SFP_S_TX_FAULT, T_FAULT_RECOVER); ++ } ++} ++ ++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; ++ ++ if (sfp->phylink) { ++ /* Setting the serdes link mode is guesswork: there's no ++ * field in the EEPROM which indicates what mode should ++ * be used. ++ * ++ * If it's a gigabit-only fiber module, it probably does ++ * not have a PHY, so switch to 802.3z negotiation mode. ++ * Otherwise, switch to SGMII mode (which is required to ++ * support non-gigabit speeds) and probe for a PHY. ++ */ ++ if (!sfp->id.base.e1000_base_t && ++ !sfp->id.base.e100_base_lx && ++ !sfp->id.base.e100_base_fx) { ++ phylink_set_link_an_mode(sfp->phylink, MLO_AN_8023Z); ++ } else { ++ phylink_set_link_an_mode(sfp->phylink, MLO_AN_SGMII); ++ sfp_sm_probe_phy(sfp); ++ } ++ } ++} ++ ++static int sfp_sm_mod_probe(struct sfp *sfp) ++{ ++ /* SFP module inserted - read I2C data */ ++ struct sfp_eeprom_id id; ++ char vendor[17]; ++ char part[17]; ++ char sn[17]; ++ char date[9]; ++ char rev[5]; ++ u8 check; ++ int err; ++ ++ err = sfp_read(sfp, false, 0, &id, sizeof(id)); ++ if (err < 0) { ++ dev_err(sfp->dev, "failed to read EEPROM: %d\n", err); ++ return -EAGAIN; ++ } ++ ++ /* Validate the checksum over the base structure */ ++ check = sfp_check(&id.base, sizeof(id.base) - 1); ++ if (check != id.base.cc_base) { ++ dev_err(sfp->dev, ++ "EEPROM base structure checksum failure: 0x%02x\n", ++ check); ++ return -EINVAL; ++ } ++ ++ check = sfp_check(&id.ext, sizeof(id.ext) - 1); ++ if (check != id.ext.cc_ext) { ++ dev_err(sfp->dev, ++ "EEPROM extended structure checksum failure: 0x%02x\n", ++ check); ++ memset(&id.ext, 0, sizeof(id.ext)); ++ } ++ ++ sfp->id = id; ++ ++ memcpy(vendor, sfp->id.base.vendor_name, 16); ++ vendor[16] = '\0'; ++ memcpy(part, sfp->id.base.vendor_pn, 16); ++ part[16] = '\0'; ++ memcpy(rev, sfp->id.base.vendor_rev, 4); ++ rev[4] = '\0'; ++ memcpy(sn, sfp->id.ext.vendor_sn, 16); ++ sn[16] = '\0'; ++ memcpy(date, sfp->id.ext.datecode, 8); ++ date[8] = '\0'; ++ ++ dev_info(sfp->dev, "module %s %s rev %s sn %s dc %s\n", vendor, part, rev, sn, date); ++ ++ /* We only support SFP modules, not the legacy GBIC modules. */ ++ if (sfp->id.base.phys_id != SFP_PHYS_ID_SFP || ++ sfp->id.base.phys_ext_id != SFP_PHYS_EXT_ID_SFP) { ++ dev_err(sfp->dev, "module is not SFP - phys id 0x%02x 0x%02x\n", ++ sfp->id.base.phys_id, sfp->id.base.phys_ext_id); ++ return -EINVAL; ++ } ++ ++ /* ++ * What isn't clear from the SFP documentation is whether this ++ * specifies the encoding expected on the TD/RD lines, or whether ++ * the TD/RD lines are always 8b10b encoded, but the transceiver ++ * converts. Eg, think of a copper SFP supporting 1G/100M/10M ++ * ethernet: this requires 8b10b encoding for 1G, 4b5b for 100M, ++ * and manchester for 10M. ++ */ ++ /* 1Gbit ethernet requires 8b10b encoding */ ++ if (sfp->id.base.encoding != SFP_ENCODING_8B10B) { ++ dev_err(sfp->dev, "module does not support 8B10B encoding\n"); ++ return -EINVAL; ++ } ++ ++ if (sfp->phylink) { ++ u32 support; ++ u8 port; ++ ++ if (sfp->id.base.e1000_base_t) { ++ support = SUPPORTED_TP; ++ port = PORT_TP; ++ } else { ++ support = SUPPORTED_FIBRE; ++ port = PORT_FIBRE; ++ } ++ phylink_set_link_port(sfp->phylink, support, port); ++ } ++ ++ return 0; ++} ++ ++static void sfp_sm_mod_remove(struct sfp *sfp) ++{ ++ if (sfp->mod_phy) ++ sfp_sm_phy_detach(sfp); ++ ++ sfp_module_tx_disable(sfp); ++ ++ memset(&sfp->id, 0, sizeof(sfp->id)); ++ ++ dev_info(sfp->dev, "module removed\n"); ++} ++ ++static void sfp_sm_event(struct sfp *sfp, unsigned int event) ++{ ++ mutex_lock(&sfp->sm_mutex); ++ ++ dev_dbg(sfp->dev, "SM: enter %u:%u:%u event %u\n", ++ sfp->sm_mod_state, sfp->sm_dev_state, sfp->sm_state, event); ++ ++ /* This state machine tracks the insert/remove state of ++ * the module, and handles probing the on-board EEPROM. ++ */ ++ switch (sfp->sm_mod_state) { ++ default: ++ if (event == SFP_E_INSERT) { ++ sfp_module_tx_disable(sfp); ++ sfp_sm_ins_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); ++ } else if (event == SFP_E_TIMEOUT) { ++ int err = sfp_sm_mod_probe(sfp); ++ ++ if (err == 0) ++ sfp_sm_ins_next(sfp, SFP_MOD_PRESENT, 0); ++ else if (err == -EAGAIN) ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ else ++ sfp_sm_ins_next(sfp, SFP_MOD_ERROR, 0); ++ } ++ break; ++ ++ case SFP_MOD_PRESENT: ++ case SFP_MOD_ERROR: ++ if (event == SFP_E_REMOVE) { ++ sfp_sm_mod_remove(sfp); ++ sfp_sm_ins_next(sfp, SFP_MOD_EMPTY, 0); ++ } ++ 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; ++ } ++ ++ /* Some events are global */ ++ if (sfp->sm_state != SFP_S_DOWN && ++ (sfp->sm_mod_state != SFP_MOD_PRESENT || ++ sfp->sm_dev_state != SFP_DEV_UP)) { ++ if (sfp->sm_state == SFP_S_LINK_UP && ++ sfp->sm_dev_state == SFP_DEV_UP) ++ sfp_sm_link_down(sfp); ++ if (sfp->mod_phy) ++ sfp_sm_phy_detach(sfp); ++ sfp_sm_next(sfp, SFP_S_DOWN, 0); ++ mutex_unlock(&sfp->sm_mutex); ++ return; ++ } ++ ++ /* 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); ++ break; ++ ++ case SFP_S_INIT: ++ 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); ++ break; ++ ++ case SFP_S_WAIT_LOS: ++ if (event == SFP_E_TX_FAULT) ++ sfp_sm_fault(sfp, true); ++ else if (event == ++ (sfp->id.ext.options & SFP_OPTIONS_LOS_INVERTED ? ++ SFP_E_LOS_HIGH : SFP_E_LOS_LOW)) ++ sfp_sm_link_up(sfp); ++ break; ++ ++ case SFP_S_LINK_UP: ++ if (event == SFP_E_TX_FAULT) { ++ sfp_sm_link_down(sfp); ++ sfp_sm_fault(sfp, true); ++ } else if (event == ++ (sfp->id.ext.options & SFP_OPTIONS_LOS_INVERTED ? ++ SFP_E_LOS_LOW : SFP_E_LOS_HIGH)) { ++ sfp_sm_link_down(sfp); ++ sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0); ++ } ++ break; ++ ++ case SFP_S_TX_FAULT: ++ if (event == SFP_E_TIMEOUT) { ++ sfp_module_tx_fault_reset(sfp); ++ sfp_sm_next(sfp, SFP_S_REINIT, T_INIT_JIFFIES); ++ } ++ break; ++ ++ case SFP_S_REINIT: ++ if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { ++ sfp_sm_fault(sfp, 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); ++ } ++ break; ++ ++ case SFP_S_TX_DISABLE: ++ break; ++ } ++ ++ dev_dbg(sfp->dev, "SM: exit %u:%u:%u\n", ++ sfp->sm_mod_state, sfp->sm_dev_state, sfp->sm_state); ++ ++ mutex_unlock(&sfp->sm_mutex); ++} ++ ++#if 0 ++static int sfp_phy_module_info(struct phy_device *phy, ++ struct ethtool_modinfo *modinfo) ++{ ++ struct sfp *sfp = phy->priv; ++ ++ /* locking... and check module is present */ ++ ++ if (sfp->id.ext.sff8472_compliance) { ++ modinfo->type = ETH_MODULE_SFF_8472; ++ modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; ++ } else { ++ modinfo->type = ETH_MODULE_SFF_8079; ++ modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; ++ } ++ return 0; ++} ++ ++static int sfp_phy_module_eeprom(struct phy_device *phy, ++ struct ethtool_eeprom *ee, u8 *data) ++{ ++ struct sfp *sfp = phy->priv; ++ unsigned int first, last, len; ++ int ret; ++ ++ if (ee->len == 0) ++ return -EINVAL; ++ ++ first = ee->offset; ++ last = ee->offset + ee->len; ++ if (first < ETH_MODULE_SFF_8079_LEN) { ++ len = last; ++ if (len > ETH_MODULE_SFF_8079_LEN) ++ len = ETH_MODULE_SFF_8079_LEN; ++ len -= first; ++ ++ ret = sfp->read(sfp, false, first, data, len); ++ if (ret < 0) ++ return ret; ++ ++ first += len; ++ data += len; ++ } ++ if (first >= ETH_MODULE_SFF_8079_LEN && last > first) { ++ len = last - first; ++ ++ ret = sfp->read(sfp, true, first, data, len); ++ if (ret < 0) ++ return ret; ++ } ++ return 0; ++} ++#endif ++ ++static void sfp_timeout(struct work_struct *work) ++{ ++ struct sfp *sfp = container_of(work, struct sfp, timeout.work); ++ ++ sfp_sm_event(sfp, SFP_E_TIMEOUT); ++} ++ ++static void sfp_check_state(struct sfp *sfp) ++{ ++ unsigned int state, i, changed; ++ ++ state = sfp_get_state(sfp); ++ changed = state ^ sfp->state; ++ changed &= SFP_F_PRESENT | SFP_F_LOS | SFP_F_TX_FAULT; ++ ++ for (i = 0; i < GPIO_MAX; i++) ++ if (changed & BIT(i)) ++ dev_dbg(sfp->dev, "%s %u -> %u\n", gpio_of_names[i], ++ !!(sfp->state & BIT(i)), !!(state & BIT(i))); ++ ++ state |= sfp->state & (SFP_F_TX_DISABLE | SFP_F_RATE_SELECT); ++ sfp->state = state; ++ ++ if (changed & SFP_F_PRESENT) ++ sfp_sm_event(sfp, state & SFP_F_PRESENT ? ++ SFP_E_INSERT : SFP_E_REMOVE); ++ ++ if (changed & SFP_F_TX_FAULT) ++ sfp_sm_event(sfp, state & SFP_F_TX_FAULT ? ++ SFP_E_TX_FAULT : SFP_E_TX_CLEAR); ++ ++ if (changed & SFP_F_LOS) ++ sfp_sm_event(sfp, state & SFP_F_LOS ? ++ SFP_E_LOS_HIGH : SFP_E_LOS_LOW); ++} ++ ++static irqreturn_t sfp_irq(int irq, void *data) ++{ ++ struct sfp *sfp = data; ++ ++ sfp_check_state(sfp); ++ ++ return IRQ_HANDLED; ++} ++ ++static void sfp_poll(struct work_struct *work) ++{ ++ struct sfp *sfp = container_of(work, struct sfp, poll.work); ++ ++ sfp_check_state(sfp); ++ mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); ++} ++ ++static int sfp_netdev_notify(struct notifier_block *nb, unsigned long act, void *data) ++{ ++ struct sfp *sfp = container_of(nb, struct sfp, netdev_nb); ++ struct netdev_notifier_info *info = data; ++ struct net_device *ndev = info->dev; ++ ++ if (!sfp->ndev || ndev != sfp->ndev) ++ return NOTIFY_DONE; ++ ++ switch (act) { ++ case NETDEV_UP: ++ sfp_sm_event(sfp, SFP_E_DEV_UP); ++ break; ++ ++ case NETDEV_GOING_DOWN: ++ sfp_sm_event(sfp, SFP_E_DEV_DOWN); ++ break; ++ ++ case NETDEV_UNREGISTER: ++ if (sfp->mod_phy && sfp->phylink) ++ phylink_disconnect_phy(sfp->phylink); ++ sfp->phylink = NULL; ++ dev_put(sfp->ndev); ++ sfp->ndev = NULL; ++ break; ++ } ++ return NOTIFY_OK; ++} ++ ++static struct sfp *sfp_alloc(struct device *dev) ++{ ++ struct sfp *sfp; ++ ++ sfp = kzalloc(sizeof(*sfp), GFP_KERNEL); ++ if (!sfp) ++ return ERR_PTR(-ENOMEM); ++ ++ sfp->dev = dev; ++ ++ mutex_init(&sfp->sm_mutex); ++ INIT_DELAYED_WORK(&sfp->poll, sfp_poll); ++ INIT_DELAYED_WORK(&sfp->timeout, sfp_timeout); ++ ++ sfp->netdev_nb.notifier_call = sfp_netdev_notify; ++ ++ return sfp; ++} ++ ++static void sfp_destroy(struct sfp *sfp) ++{ ++ cancel_delayed_work_sync(&sfp->poll); ++ cancel_delayed_work_sync(&sfp->timeout); ++ if (sfp->i2c_mii) { ++ mdiobus_unregister(sfp->i2c_mii); ++ mdiobus_free(sfp->i2c_mii); ++ } ++ if (sfp->i2c) ++ i2c_put_adapter(sfp->i2c); ++ of_node_put(sfp->dev->of_node); ++ kfree(sfp); ++} ++ ++static void sfp_cleanup(void *data) ++{ ++ struct sfp *sfp = data; ++ ++ sfp_destroy(sfp); ++} ++ ++static int sfp_probe(struct platform_device *pdev) ++{ ++ struct sfp *sfp; ++ bool poll = false; ++ int irq, err, i; ++ ++ sfp = sfp_alloc(&pdev->dev); ++ if (IS_ERR(sfp)) ++ return PTR_ERR(sfp); ++ ++ platform_set_drvdata(pdev, sfp); ++ ++ err = devm_add_action(sfp->dev, sfp_cleanup, sfp); ++ if (err < 0) ++ return err; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *node = pdev->dev.of_node; ++ struct device_node *np; ++ ++ np = of_parse_phandle(node, "i2c-bus", 0); ++ if (np) { ++ struct i2c_adapter *i2c; ++ ++ i2c = of_find_i2c_adapter_by_node(np); ++ of_node_put(np); ++ if (!i2c) ++ return -EPROBE_DEFER; ++ ++ err = sfp_i2c_configure(sfp, i2c); ++ if (err < 0) { ++ i2c_put_adapter(i2c); ++ return err; ++ } ++ } ++ ++ for (i = 0; i < GPIO_MAX; i++) { ++ sfp->gpio[i] = devm_gpiod_get_optional(sfp->dev, ++ gpio_of_names[i], gpio_flags[i]); ++ if (IS_ERR(sfp->gpio[i])) ++ return PTR_ERR(sfp->gpio[i]); ++ } ++ ++ sfp->get_state = sfp_gpio_get_state; ++ sfp->set_state = sfp_gpio_set_state; ++ ++ np = of_parse_phandle(node, "sfp,ethernet", 0); ++ if (!np) { ++ dev_err(sfp->dev, "missing sfp,ethernet property\n"); ++ return -EINVAL; ++ } ++ ++ sfp->ndev = of_find_net_device_by_node(np); ++ if (!sfp->ndev) { ++ dev_err(sfp->dev, "ethernet device not found\n"); ++ return -EPROBE_DEFER; ++ } ++ ++ dev_hold(sfp->ndev); ++ put_device(&sfp->ndev->dev); ++ ++ sfp->phylink = phylink_lookup_by_netdev(sfp->ndev); ++ if (!sfp->phylink) { ++ dev_err(sfp->dev, "ethernet device not found\n"); ++ return -EPROBE_DEFER; ++ } ++ ++ phylink_disable(sfp->phylink); ++ } ++ ++ sfp->state = sfp_get_state(sfp); ++ if (sfp->gpio[GPIO_TX_DISABLE] && ++ gpiod_get_value_cansleep(sfp->gpio[GPIO_TX_DISABLE])) ++ sfp->state |= SFP_F_TX_DISABLE; ++ if (sfp->gpio[GPIO_RATE_SELECT] && ++ gpiod_get_value_cansleep(sfp->gpio[GPIO_RATE_SELECT])) ++ sfp->state |= SFP_F_RATE_SELECT; ++ sfp_set_state(sfp, sfp->state); ++ sfp_module_tx_disable(sfp); ++ if (sfp->state & SFP_F_PRESENT) ++ sfp_sm_event(sfp, SFP_E_INSERT); ++ ++ for (i = 0; i < GPIO_MAX; i++) { ++ if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i]) ++ continue; ++ ++ irq = gpiod_to_irq(sfp->gpio[i]); ++ if (!irq) { ++ poll = true; ++ continue; ++ } ++ ++ err = devm_request_threaded_irq(sfp->dev, irq, NULL, sfp_irq, ++ IRQF_ONESHOT | ++ IRQF_TRIGGER_RISING | ++ IRQF_TRIGGER_FALLING, ++ dev_name(sfp->dev), sfp); ++ if (err) ++ poll = true; ++ } ++ ++ if (poll) ++ mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); ++ ++ register_netdevice_notifier(&sfp->netdev_nb); ++ ++ return 0; ++} ++ ++static int sfp_remove(struct platform_device *pdev) ++{ ++ struct sfp *sfp = platform_get_drvdata(pdev); ++ ++ unregister_netdevice_notifier(&sfp->netdev_nb); ++ if (sfp->ndev) ++ dev_put(sfp->ndev); ++ ++ return 0; ++} ++ ++static const struct of_device_id sfp_of_match[] = { ++ { .compatible = "sff,sfp", }, ++ { }, ++}; ++MODULE_DEVICE_TABLE(of, sfp_of_match); ++ ++static struct platform_driver sfp_driver = { ++ .probe = sfp_probe, ++ .remove = sfp_remove, ++ .driver = { ++ .name = "sfp", ++ .of_match_table = sfp_of_match, ++ }, ++}; ++ ++static int sfp_init(void) ++{ ++ poll_jiffies = msecs_to_jiffies(100); ++ ++ return platform_driver_register(&sfp_driver); ++} ++module_init(sfp_init); ++ ++static void sfp_exit(void) ++{ ++ platform_driver_unregister(&sfp_driver); ++} ++module_exit(sfp_exit); ++ ++MODULE_ALIAS("platform:sfp"); ++MODULE_AUTHOR("Russell King"); ++MODULE_LICENSE("GPL v2"); +--- /dev/null ++++ b/include/linux/sfp.h +@@ -0,0 +1,339 @@ ++#ifndef LINUX_SFP_H ++#define LINUX_SFP_H ++ ++struct __packed sfp_eeprom_base { ++ u8 phys_id; ++ u8 phys_ext_id; ++ u8 connector; ++#if defined __BIG_ENDIAN_BITFIELD ++ u8 e10g_base_er:1; ++ u8 e10g_base_lrm:1; ++ u8 e10g_base_lr:1; ++ u8 e10g_base_sr:1; ++ u8 if_1x_sx:1; ++ u8 if_1x_lx:1; ++ u8 if_1x_copper_active:1; ++ u8 if_1x_copper_passive:1; ++ ++ u8 escon_mmf_1310_led:1; ++ u8 escon_smf_1310_laser:1; ++ u8 sonet_oc192_short_reach:1; ++ u8 sonet_reach_bit1:1; ++ u8 sonet_reach_bit2:1; ++ u8 sonet_oc48_long_reach:1; ++ u8 sonet_oc48_intermediate_reach:1; ++ u8 sonet_oc48_short_reach:1; ++ ++ u8 unallocated_5_7:1; ++ u8 sonet_oc12_smf_long_reach:1; ++ u8 sonet_oc12_smf_intermediate_reach:1; ++ u8 sonet_oc12_short_reach:1; ++ u8 unallocated_5_3:1; ++ u8 sonet_oc3_smf_long_reach:1; ++ u8 sonet_oc3_smf_intermediate_reach:1; ++ u8 sonet_oc3_short_reach:1; ++ ++ u8 e_base_px:1; ++ u8 e_base_bx10:1; ++ u8 e100_base_fx:1; ++ u8 e100_base_lx:1; ++ u8 e1000_base_t:1; ++ u8 e1000_base_cx:1; ++ u8 e1000_base_lx:1; ++ u8 e1000_base_sx:1; ++ ++ u8 fc_ll_v:1; ++ u8 fc_ll_s:1; ++ u8 fc_ll_i:1; ++ u8 fc_ll_l:1; ++ u8 fc_ll_m:1; ++ u8 fc_tech_sa:1; ++ u8 fc_tech_lc:1; ++ u8 fc_tech_electrical_inter_enclosure:1; ++ ++ u8 fc_tech_electrical_intra_enclosure:1; ++ u8 fc_tech_sn:1; ++ u8 fc_tech_sl:1; ++ u8 fc_tech_ll:1; ++ u8 sfp_ct_active:1; ++ u8 sfp_ct_passive:1; ++ u8 unallocated_8_1:1; ++ u8 unallocated_8_0:1; ++ ++ u8 fc_media_tw:1; ++ u8 fc_media_tp:1; ++ u8 fc_media_mi:1; ++ u8 fc_media_tv:1; ++ u8 fc_media_m6:1; ++ u8 fc_media_m5:1; ++ u8 unallocated_9_1:1; ++ u8 fc_media_sm:1; ++ ++ u8 fc_speed_1200:1; ++ u8 fc_speed_800:1; ++ u8 fc_speed_1600:1; ++ u8 fc_speed_400:1; ++ u8 fc_speed_3200:1; ++ u8 fc_speed_200:1; ++ u8 unallocated_10_1:1; ++ u8 fc_speed_100:1; ++#elif defined __LITTLE_ENDIAN_BITFIELD ++ u8 if_1x_copper_passive:1; ++ u8 if_1x_copper_active:1; ++ u8 if_1x_lx:1; ++ u8 if_1x_sx:1; ++ u8 e10g_base_sr:1; ++ u8 e10g_base_lr:1; ++ u8 e10g_base_lrm:1; ++ u8 e10g_base_er:1; ++ ++ u8 sonet_oc3_short_reach:1; ++ u8 sonet_oc3_smf_intermediate_reach:1; ++ u8 sonet_oc3_smf_long_reach:1; ++ u8 unallocated_5_3:1; ++ u8 sonet_oc12_short_reach:1; ++ u8 sonet_oc12_smf_intermediate_reach:1; ++ u8 sonet_oc12_smf_long_reach:1; ++ u8 unallocated_5_7:1; ++ ++ u8 sonet_oc48_short_reach:1; ++ u8 sonet_oc48_intermediate_reach:1; ++ u8 sonet_oc48_long_reach:1; ++ u8 sonet_reach_bit2:1; ++ u8 sonet_reach_bit1:1; ++ u8 sonet_oc192_short_reach:1; ++ u8 escon_smf_1310_laser:1; ++ u8 escon_mmf_1310_led:1; ++ ++ u8 e1000_base_sx:1; ++ u8 e1000_base_lx:1; ++ u8 e1000_base_cx:1; ++ u8 e1000_base_t:1; ++ u8 e100_base_lx:1; ++ u8 e100_base_fx:1; ++ u8 e_base_bx10:1; ++ u8 e_base_px:1; ++ ++ u8 fc_tech_electrical_inter_enclosure:1; ++ u8 fc_tech_lc:1; ++ u8 fc_tech_sa:1; ++ u8 fc_ll_m:1; ++ u8 fc_ll_l:1; ++ u8 fc_ll_i:1; ++ u8 fc_ll_s:1; ++ u8 fc_ll_v:1; ++ ++ u8 unallocated_8_0:1; ++ u8 unallocated_8_1:1; ++ u8 sfp_ct_passive:1; ++ u8 sfp_ct_active:1; ++ u8 fc_tech_ll:1; ++ u8 fc_tech_sl:1; ++ u8 fc_tech_sn:1; ++ u8 fc_tech_electrical_intra_enclosure:1; ++ ++ u8 fc_media_sm:1; ++ u8 unallocated_9_1:1; ++ u8 fc_media_m5:1; ++ u8 fc_media_m6:1; ++ u8 fc_media_tv:1; ++ u8 fc_media_mi:1; ++ u8 fc_media_tp:1; ++ u8 fc_media_tw:1; ++ ++ u8 fc_speed_100:1; ++ u8 unallocated_10_1:1; ++ u8 fc_speed_200:1; ++ u8 fc_speed_3200:1; ++ u8 fc_speed_400:1; ++ u8 fc_speed_1600:1; ++ u8 fc_speed_800:1; ++ u8 fc_speed_1200:1; ++#else ++#error Unknown Endian ++#endif ++ u8 encoding; ++ u8 br_nominal; ++ u8 rate_id; ++ u8 link_len[6]; ++ char vendor_name[16]; ++ u8 reserved36; ++ char vendor_oui[3]; ++ char vendor_pn[16]; ++ char vendor_rev[4]; ++ union { ++ __be16 optical_wavelength; ++ u8 cable_spec; ++ }; ++ u8 reserved62; ++ u8 cc_base; ++}; ++ ++struct __packed sfp_eeprom_ext { ++ __be16 options; ++ u8 br_max; ++ u8 br_min; ++ char vendor_sn[16]; ++ char datecode[8]; ++ u8 diagmon; ++ u8 enhopts; ++ u8 sff8472_compliance; ++ u8 cc_ext; ++}; ++ ++struct __packed sfp_eeprom_id { ++ struct sfp_eeprom_base base; ++ struct sfp_eeprom_ext ext; ++}; ++ ++/* SFP EEPROM registers */ ++enum { ++ SFP_PHYS_ID = 0x00, ++ SFP_PHYS_EXT_ID = 0x01, ++ SFP_CONNECTOR = 0x02, ++ SFP_COMPLIANCE = 0x03, ++ SFP_ENCODING = 0x0b, ++ SFP_BR_NOMINAL = 0x0c, ++ SFP_RATE_ID = 0x0d, ++ SFP_LINK_LEN_SM_KM = 0x0e, ++ SFP_LINK_LEN_SM_100M = 0x0f, ++ SFP_LINK_LEN_50UM_OM2_10M = 0x10, ++ SFP_LINK_LEN_62_5UM_OM1_10M = 0x11, ++ SFP_LINK_LEN_COPPER_1M = 0x12, ++ SFP_LINK_LEN_50UM_OM4_10M = 0x12, ++ SFP_LINK_LEN_50UM_OM3_10M = 0x13, ++ SFP_VENDOR_NAME = 0x14, ++ SFP_VENDOR_OUI = 0x25, ++ SFP_VENDOR_PN = 0x28, ++ SFP_VENDOR_REV = 0x38, ++ SFP_OPTICAL_WAVELENGTH_MSB = 0x3c, ++ SFP_OPTICAL_WAVELENGTH_LSB = 0x3d, ++ SFP_CABLE_SPEC = 0x3c, ++ SFP_CC_BASE = 0x3f, ++ SFP_OPTIONS = 0x40, /* 2 bytes, MSB, LSB */ ++ SFP_BR_MAX = 0x42, ++ SFP_BR_MIN = 0x43, ++ SFP_VENDOR_SN = 0x44, ++ SFP_DATECODE = 0x54, ++ SFP_DIAGMON = 0x5c, ++ SFP_ENHOPTS = 0x5d, ++ SFP_SFF8472_COMPLIANCE = 0x5e, ++ SFP_CC_EXT = 0x5f, ++ ++ SFP_PHYS_ID_SFP = 0x03, ++ SFP_PHYS_EXT_ID_SFP = 0x04, ++ SFP_CONNECTOR_UNSPEC = 0x00, ++ /* codes 01-05 not supportable on SFP, but some modules have single SC */ ++ SFP_CONNECTOR_SC = 0x01, ++ SFP_CONNECTOR_FIBERJACK = 0x06, ++ SFP_CONNECTOR_LC = 0x07, ++ SFP_CONNECTOR_MT_RJ = 0x08, ++ SFP_CONNECTOR_MU = 0x09, ++ SFP_CONNECTOR_SG = 0x0a, ++ SFP_CONNECTOR_OPTICAL_PIGTAIL = 0x0b, ++ SFP_CONNECTOR_HSSDC_II = 0x20, ++ SFP_CONNECTOR_COPPER_PIGTAIL = 0x21, ++ SFP_ENCODING_UNSPEC = 0x00, ++ SFP_ENCODING_8B10B = 0x01, ++ SFP_ENCODING_4B5B = 0x02, ++ SFP_ENCODING_NRZ = 0x03, ++ SFP_ENCODING_MANCHESTER = 0x04, ++ SFP_OPTIONS_HIGH_POWER_LEVEL = BIT(13), ++ SFP_OPTIONS_PAGING_A2 = BIT(12), ++ SFP_OPTIONS_RETIMER = BIT(11), ++ SFP_OPTIONS_COOLED_XCVR = BIT(10), ++ SFP_OPTIONS_POWER_DECL = BIT(9), ++ SFP_OPTIONS_RX_LINEAR_OUT = BIT(8), ++ SFP_OPTIONS_RX_DECISION_THRESH = BIT(7), ++ SFP_OPTIONS_TUNABLE_TX = BIT(6), ++ SFP_OPTIONS_RATE_SELECT = BIT(5), ++ SFP_OPTIONS_TX_DISABLE = BIT(4), ++ SFP_OPTIONS_TX_FAULT = BIT(3), ++ SFP_OPTIONS_LOS_INVERTED = BIT(2), ++ SFP_OPTIONS_LOS_NORMAL = BIT(1), ++ SFP_DIAGMON_DDM = BIT(6), ++ SFP_DIAGMON_INT_CAL = BIT(5), ++ SFP_DIAGMON_EXT_CAL = BIT(4), ++ SFP_DIAGMON_RXPWR_AVG = BIT(3), ++ SFP_DIAGMON_ADDRMODE = BIT(2), ++ SFP_ENHOPTS_ALARMWARN = BIT(7), ++ SFP_ENHOPTS_SOFT_TX_DISABLE = BIT(6), ++ SFP_ENHOPTS_SOFT_TX_FAULT = BIT(5), ++ SFP_ENHOPTS_SOFT_RX_LOS = BIT(4), ++ SFP_ENHOPTS_SOFT_RATE_SELECT = BIT(3), ++ SFP_ENHOPTS_APP_SELECT_SFF8079 = BIT(2), ++ SFP_ENHOPTS_SOFT_RATE_SFF8431 = BIT(1), ++ SFP_SFF8472_COMPLIANCE_NONE = 0x00, ++ SFP_SFF8472_COMPLIANCE_REV9_3 = 0x01, ++ SFP_SFF8472_COMPLIANCE_REV9_5 = 0x02, ++ SFP_SFF8472_COMPLIANCE_REV10_2 = 0x03, ++ SFP_SFF8472_COMPLIANCE_REV10_4 = 0x04, ++ SFP_SFF8472_COMPLIANCE_REV11_0 = 0x05, ++ SFP_SFF8472_COMPLIANCE_REV11_3 = 0x06, ++ SFP_SFF8472_COMPLIANCE_REV11_4 = 0x07, ++ SFP_SFF8472_COMPLIANCE_REV12_0 = 0x08, ++}; ++ ++/* SFP Diagnostics */ ++enum { ++ /* Alarm and warnings stored MSB at lower address then LSB */ ++ SFP_TEMP_HIGH_ALARM = 0x00, ++ SFP_TEMP_LOW_ALARM = 0x02, ++ SFP_TEMP_HIGH_WARN = 0x04, ++ SFP_TEMP_LOW_WARN = 0x06, ++ SFP_VOLT_HIGH_ALARM = 0x08, ++ SFP_VOLT_LOW_ALARM = 0x0a, ++ SFP_VOLT_HIGH_WARN = 0x0c, ++ SFP_VOLT_LOW_WARN = 0x0e, ++ SFP_BIAS_HIGH_ALARM = 0x10, ++ SFP_BIAS_LOW_ALARM = 0x12, ++ SFP_BIAS_HIGH_WARN = 0x14, ++ SFP_BIAS_LOW_WARN = 0x16, ++ SFP_TXPWR_HIGH_ALARM = 0x18, ++ SFP_TXPWR_LOW_ALARM = 0x1a, ++ SFP_TXPWR_HIGH_WARN = 0x1c, ++ SFP_TXPWR_LOW_WARN = 0x1e, ++ SFP_RXPWR_HIGH_ALARM = 0x20, ++ SFP_RXPWR_LOW_ALARM = 0x22, ++ SFP_RXPWR_HIGH_WARN = 0x24, ++ SFP_RXPWR_LOW_WARN = 0x26, ++ SFP_LASER_TEMP_HIGH_ALARM = 0x28, ++ SFP_LASER_TEMP_LOW_ALARM = 0x2a, ++ SFP_LASER_TEMP_HIGH_WARN = 0x2c, ++ SFP_LASER_TEMP_LOW_WARN = 0x2e, ++ SFP_TEC_CUR_HIGH_ALARM = 0x30, ++ SFP_TEC_CUR_LOW_ALARM = 0x32, ++ SFP_TEC_CUR_HIGH_WARN = 0x34, ++ SFP_TEC_CUR_LOW_WARN = 0x36, ++ SFP_CAL_RXPWR4 = 0x38, ++ SFP_CAL_RXPWR3 = 0x3c, ++ SFP_CAL_RXPWR2 = 0x40, ++ SFP_CAL_RXPWR1 = 0x44, ++ SFP_CAL_RXPWR0 = 0x48, ++ SFP_CAL_TXI_SLOPE = 0x4c, ++ SFP_CAL_TXI_OFFSET = 0x4e, ++ SFP_CAL_TXPWR_SLOPE = 0x50, ++ SFP_CAL_TXPWR_OFFSET = 0x52, ++ SFP_CAL_T_SLOPE = 0x54, ++ SFP_CAL_T_OFFSET = 0x56, ++ SFP_CAL_V_SLOPE = 0x58, ++ SFP_CAL_V_OFFSET = 0x5a, ++ SFP_CHKSUM = 0x5f, ++ ++ SFP_TEMP = 0x60, ++ SFP_VCC = 0x62, ++ SFP_TX_BIAS = 0x64, ++ SFP_TX_POWER = 0x66, ++ SFP_RX_POWER = 0x68, ++ SFP_LASER_TEMP = 0x6a, ++ SFP_TEC_CUR = 0x6c, ++ ++ SFP_STATUS = 0x6e, ++ SFP_ALARM = 0x70, ++ ++ SFP_EXT_STATUS = 0x76, ++ SFP_VSL = 0x78, ++ SFP_PAGE = 0x7f, ++}; ++ ++#endif diff --git a/target/linux/mvebu/patches-4.4/133-sfp-display-SFP-module-information.patch b/target/linux/mvebu/patches-4.4/133-sfp-display-SFP-module-information.patch new file mode 100644 index 0000000..bc039ee --- /dev/null +++ b/target/linux/mvebu/patches-4.4/133-sfp-display-SFP-module-information.patch @@ -0,0 +1,283 @@ +From 66c248886538d7ee97ef2fe498061f857d4c906a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sun, 13 Sep 2015 01:06:31 +0100 +Subject: [PATCH 721/744] sfp: display SFP module information + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/sfp.c | 247 +++++++++++++++++++++++++++++++++++++++++++++++++- + 1 file changed, 246 insertions(+), 1 deletion(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -248,6 +248,182 @@ static unsigned int sfp_check(void *buf, + return check; + } + ++static const char *sfp_link_len(char *buf, size_t size, unsigned int length, ++ unsigned int multiplier) ++{ ++ if (length == 0) ++ return "unsupported/unspecified"; ++ ++ if (length == 255) { ++ *buf++ = '>'; ++ size -= 1; ++ length -= 1; ++ } ++ ++ length *= multiplier; ++ ++ if (length >= 1000) ++ snprintf(buf, size, "%u.%0*ukm", ++ length / 1000, ++ multiplier > 100 ? 1 : ++ multiplier > 10 ? 2 : 3, ++ length % 1000); ++ else ++ snprintf(buf, size, "%um", length); ++ ++ return buf; ++} ++ ++struct bitfield { ++ unsigned int mask; ++ unsigned int val; ++ const char *str; ++}; ++ ++static const struct bitfield sfp_options[] = { ++ { ++ .mask = SFP_OPTIONS_HIGH_POWER_LEVEL, ++ .val = SFP_OPTIONS_HIGH_POWER_LEVEL, ++ .str = "hpl", ++ }, { ++ .mask = SFP_OPTIONS_PAGING_A2, ++ .val = SFP_OPTIONS_PAGING_A2, ++ .str = "paginga2", ++ }, { ++ .mask = SFP_OPTIONS_RETIMER, ++ .val = SFP_OPTIONS_RETIMER, ++ .str = "retimer", ++ }, { ++ .mask = SFP_OPTIONS_COOLED_XCVR, ++ .val = SFP_OPTIONS_COOLED_XCVR, ++ .str = "cooled", ++ }, { ++ .mask = SFP_OPTIONS_POWER_DECL, ++ .val = SFP_OPTIONS_POWER_DECL, ++ .str = "powerdecl", ++ }, { ++ .mask = SFP_OPTIONS_RX_LINEAR_OUT, ++ .val = SFP_OPTIONS_RX_LINEAR_OUT, ++ .str = "rxlinear", ++ }, { ++ .mask = SFP_OPTIONS_RX_DECISION_THRESH, ++ .val = SFP_OPTIONS_RX_DECISION_THRESH, ++ .str = "rxthresh", ++ }, { ++ .mask = SFP_OPTIONS_TUNABLE_TX, ++ .val = SFP_OPTIONS_TUNABLE_TX, ++ .str = "tunabletx", ++ }, { ++ .mask = SFP_OPTIONS_RATE_SELECT, ++ .val = SFP_OPTIONS_RATE_SELECT, ++ .str = "ratesel", ++ }, { ++ .mask = SFP_OPTIONS_TX_DISABLE, ++ .val = SFP_OPTIONS_TX_DISABLE, ++ .str = "txdisable", ++ }, { ++ .mask = SFP_OPTIONS_TX_FAULT, ++ .val = SFP_OPTIONS_TX_FAULT, ++ .str = "txfault", ++ }, { ++ .mask = SFP_OPTIONS_LOS_INVERTED, ++ .val = SFP_OPTIONS_LOS_INVERTED, ++ .str = "los-", ++ }, { ++ .mask = SFP_OPTIONS_LOS_NORMAL, ++ .val = SFP_OPTIONS_LOS_NORMAL, ++ .str = "los+", ++ }, { } ++}; ++ ++static const struct bitfield diagmon[] = { ++ { ++ .mask = SFP_DIAGMON_DDM, ++ .val = SFP_DIAGMON_DDM, ++ .str = "ddm", ++ }, { ++ .mask = SFP_DIAGMON_INT_CAL, ++ .val = SFP_DIAGMON_INT_CAL, ++ .str = "intcal", ++ }, { ++ .mask = SFP_DIAGMON_EXT_CAL, ++ .val = SFP_DIAGMON_EXT_CAL, ++ .str = "extcal", ++ }, { ++ .mask = SFP_DIAGMON_RXPWR_AVG, ++ .val = SFP_DIAGMON_RXPWR_AVG, ++ .str = "rxpwravg", ++ }, { } ++}; ++ ++static const char *sfp_bitfield(char *out, size_t outsz, const struct bitfield *bits, unsigned int val) ++{ ++ char *p = out; ++ int n; ++ ++ *p = '\0'; ++ while (bits->mask) { ++ if ((val & bits->mask) == bits->val) { ++ n = snprintf(p, outsz, "%s%s", ++ out != p ? ", " : "", ++ bits->str); ++ if (n == outsz) ++ break; ++ p += n; ++ outsz -= n; ++ } ++ bits++; ++ } ++ ++ return out; ++} ++ ++static const char *sfp_connector(unsigned int connector) ++{ ++ switch (connector) { ++ case SFP_CONNECTOR_UNSPEC: ++ return "unknown/unspecified"; ++ case SFP_CONNECTOR_SC: ++ return "SC"; ++ case SFP_CONNECTOR_FIBERJACK: ++ return "Fiberjack"; ++ case SFP_CONNECTOR_LC: ++ return "LC"; ++ case SFP_CONNECTOR_MT_RJ: ++ return "MT-RJ"; ++ case SFP_CONNECTOR_MU: ++ return "MU"; ++ case SFP_CONNECTOR_SG: ++ return "SG"; ++ case SFP_CONNECTOR_OPTICAL_PIGTAIL: ++ return "Optical pigtail"; ++ case SFP_CONNECTOR_HSSDC_II: ++ return "HSSDC II"; ++ case SFP_CONNECTOR_COPPER_PIGTAIL: ++ return "Copper pigtail"; ++ default: ++ return "unknown"; ++ } ++} ++ ++static const char *sfp_encoding(unsigned int encoding) ++{ ++ switch (encoding) { ++ case SFP_ENCODING_UNSPEC: ++ return "unspecified"; ++ case SFP_ENCODING_8B10B: ++ return "8b10b"; ++ case SFP_ENCODING_4B5B: ++ return "4b5b"; ++ case SFP_ENCODING_NRZ: ++ return "NRZ"; ++ case SFP_ENCODING_MANCHESTER: ++ return "MANCHESTER"; ++ default: ++ return "unknown"; ++ } ++} ++ + /* Helpers */ + static void sfp_module_tx_disable(struct sfp *sfp) + { +@@ -426,6 +602,7 @@ static int sfp_sm_mod_probe(struct sfp * + char sn[17]; + char date[9]; + char rev[5]; ++ char options[80]; + u8 check; + int err; + +@@ -462,10 +639,78 @@ static int sfp_sm_mod_probe(struct sfp * + rev[4] = '\0'; + memcpy(sn, sfp->id.ext.vendor_sn, 16); + sn[16] = '\0'; +- memcpy(date, sfp->id.ext.datecode, 8); ++ date[0] = sfp->id.ext.datecode[4]; ++ date[1] = sfp->id.ext.datecode[5]; ++ date[2] = '-'; ++ date[3] = sfp->id.ext.datecode[2]; ++ date[4] = sfp->id.ext.datecode[3]; ++ date[5] = '-'; ++ date[6] = sfp->id.ext.datecode[0]; ++ date[7] = sfp->id.ext.datecode[1]; + date[8] = '\0'; + + dev_info(sfp->dev, "module %s %s rev %s sn %s dc %s\n", vendor, part, rev, sn, date); ++ dev_info(sfp->dev, " %s connector, encoding %s, nominal bitrate %u.%uGbps +%u%% -%u%%\n", ++ sfp_connector(sfp->id.base.connector), ++ sfp_encoding(sfp->id.base.encoding), ++ sfp->id.base.br_nominal / 10, ++ sfp->id.base.br_nominal % 10, ++ sfp->id.ext.br_max, sfp->id.ext.br_min); ++ dev_info(sfp->dev, " 1000BaseSX%c 1000BaseLX%c 1000BaseCX%c 1000BaseT%c 100BaseTLX%c 1000BaseFX%c BaseBX10%c BasePX%c\n", ++ sfp->id.base.e1000_base_sx ? '+' : '-', ++ sfp->id.base.e1000_base_lx ? '+' : '-', ++ sfp->id.base.e1000_base_cx ? '+' : '-', ++ sfp->id.base.e1000_base_t ? '+' : '-', ++ sfp->id.base.e100_base_lx ? '+' : '-', ++ sfp->id.base.e100_base_fx ? '+' : '-', ++ sfp->id.base.e_base_bx10 ? '+' : '-', ++ sfp->id.base.e_base_px ? '+' : '-'); ++ ++ if (!sfp->id.base.sfp_ct_passive && !sfp->id.base.sfp_ct_active && ++ !sfp->id.base.e1000_base_t) { ++ char len_9um[16], len_om[16]; ++ ++ dev_info(sfp->dev, " Wavelength %unm, fiber lengths:\n", ++ be16_to_cpup(&sfp->id.base.optical_wavelength)); ++ ++ if (sfp->id.base.link_len[0] == 255) ++ strcpy(len_9um, ">254km"); ++ else if (sfp->id.base.link_len[1] && sfp->id.base.link_len[1] != 255) ++ sprintf(len_9um, "%um", ++ sfp->id.base.link_len[1] * 100); ++ else if (sfp->id.base.link_len[0]) ++ sprintf(len_9um, "%ukm", sfp->id.base.link_len[0]); ++ else if (sfp->id.base.link_len[1] == 255) ++ strcpy(len_9um, ">25.4km"); ++ else ++ strcpy(len_9um, "unsupported"); ++ ++ dev_info(sfp->dev, " 9µm SM : %s\n", len_9um); ++ dev_info(sfp->dev, " 62.5µm MM OM1: %s\n", ++ sfp_link_len(len_om, sizeof(len_om), ++ sfp->id.base.link_len[3], 10)); ++ dev_info(sfp->dev, " 50µm MM OM2: %s\n", ++ sfp_link_len(len_om, sizeof(len_om), ++ sfp->id.base.link_len[2], 10)); ++ dev_info(sfp->dev, " 50µm MM OM3: %s\n", ++ sfp_link_len(len_om, sizeof(len_om), ++ sfp->id.base.link_len[5], 10)); ++ dev_info(sfp->dev, " 50µm MM OM4: %s\n", ++ sfp_link_len(len_om, sizeof(len_om), ++ sfp->id.base.link_len[4], 10)); ++ } else { ++ char len[16]; ++ dev_info(sfp->dev, " Copper length: %s\n", ++ sfp_link_len(len, sizeof(len), ++ sfp->id.base.link_len[4], 1)); ++ } ++ ++ dev_info(sfp->dev, " Options: %s\n", ++ sfp_bitfield(options, sizeof(options), sfp_options, ++ be16_to_cpu(sfp->id.ext.options))); ++ dev_info(sfp->dev, " Diagnostics: %s\n", ++ sfp_bitfield(options, sizeof(options), diagmon, ++ sfp->id.ext.diagmon)); + + /* We only support SFP modules, not the legacy GBIC modules. */ + if (sfp->id.base.phys_id != SFP_PHYS_ID_SFP || diff --git a/target/linux/mvebu/patches-4.4/134-net-mvneta-convert-to-phylink.patch b/target/linux/mvebu/patches-4.4/134-net-mvneta-convert-to-phylink.patch new file mode 100644 index 0000000..fac283f --- /dev/null +++ b/target/linux/mvebu/patches-4.4/134-net-mvneta-convert-to-phylink.patch @@ -0,0 +1,697 @@ +From e268be0ddc666f4a98db462cbed2a97637e82b5c Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Wed, 16 Sep 2015 21:27:10 +0100 +Subject: [PATCH 722/744] net: mvneta: convert to phylink + +Convert mvneta to use phylink, which models the MAC to PHY link in +a generic, reusable form. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/ethernet/marvell/Kconfig | 2 +- + drivers/net/ethernet/marvell/mvneta.c | 451 +++++++++++++++++----------------- + 2 files changed, 227 insertions(+), 226 deletions(-) + +--- a/drivers/net/ethernet/marvell/Kconfig ++++ b/drivers/net/ethernet/marvell/Kconfig +@@ -58,7 +58,7 @@ config MVNETA + tristate "Marvell Armada 370/38x/XP network interface support" + depends on PLAT_ORION + select MVMDIO +- select FIXED_PHY ++ select PHYLINK + ---help--- + This driver supports the network interface units in the + Marvell ARMADA XP, ARMADA 370 and ARMADA 38x SoC family. +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -28,6 +28,7 @@ + #include <linux/of_mdio.h> + #include <linux/of_net.h> + #include <linux/phy.h> ++#include <linux/phylink.h> + #include <linux/platform_device.h> + #include <linux/skbuff.h> + #include <net/hwbm.h> +@@ -188,6 +189,7 @@ + #define MVNETA_GMAC_CTRL_0 0x2c00 + #define MVNETA_GMAC_MAX_RX_SIZE_SHIFT 2 + #define MVNETA_GMAC_MAX_RX_SIZE_MASK 0x7ffc ++#define MVNETA_GMAC0_PORT_1000BASE_X BIT(1) + #define MVNETA_GMAC0_PORT_ENABLE BIT(0) + #define MVNETA_GMAC_CTRL_2 0x2c08 + #define MVNETA_GMAC2_INBAND_AN_ENABLE BIT(0) +@@ -203,13 +205,19 @@ + #define MVNETA_GMAC_TX_FLOW_CTRL_ENABLE BIT(5) + #define MVNETA_GMAC_RX_FLOW_CTRL_ACTIVE BIT(6) + #define MVNETA_GMAC_TX_FLOW_CTRL_ACTIVE BIT(7) ++#define MVNETA_GMAC_AN_COMPLETE BIT(11) ++#define MVNETA_GMAC_SYNC_OK BIT(14) + #define MVNETA_GMAC_AUTONEG_CONFIG 0x2c0c + #define MVNETA_GMAC_FORCE_LINK_DOWN BIT(0) + #define MVNETA_GMAC_FORCE_LINK_PASS BIT(1) + #define MVNETA_GMAC_INBAND_AN_ENABLE BIT(2) ++#define MVNETA_GMAC_AN_BYPASS_ENABLE BIT(3) ++#define MVNETA_GMAC_INBAND_RESTART_AN BIT(4) + #define MVNETA_GMAC_CONFIG_MII_SPEED BIT(5) + #define MVNETA_GMAC_CONFIG_GMII_SPEED BIT(6) + #define MVNETA_GMAC_AN_SPEED_EN BIT(7) ++#define MVNETA_GMAC_CONFIG_FLOW_CTRL BIT(8) ++#define MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL BIT(9) + #define MVNETA_GMAC_AN_FLOW_CTRL_EN BIT(11) + #define MVNETA_GMAC_CONFIG_FULL_DUPLEX BIT(12) + #define MVNETA_GMAC_AN_DUPLEX_EN BIT(13) +@@ -396,15 +404,9 @@ struct mvneta_port { + u16 tx_ring_size; + u16 rx_ring_size; + +- struct mii_bus *mii_bus; +- struct phy_device *phy_dev; +- phy_interface_t phy_interface; +- struct device_node *phy_node; +- unsigned int link; +- unsigned int duplex; +- unsigned int speed; ++ struct device_node *dn; + unsigned int tx_csum_limit; +- unsigned int use_inband_status:1; ++ struct phylink *phylink; + + struct mvneta_bm *bm_priv; + struct mvneta_bm_pool *pool_long; +@@ -1236,44 +1238,6 @@ static void mvneta_set_other_mcast_table + mvreg_write(pp, MVNETA_DA_FILT_OTH_MCAST + offset, val); + } + +-static void mvneta_set_autoneg(struct mvneta_port *pp, int enable) +-{ +- u32 val; +- +- if (enable) { +- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~(MVNETA_GMAC_FORCE_LINK_PASS | +- MVNETA_GMAC_FORCE_LINK_DOWN | +- MVNETA_GMAC_AN_FLOW_CTRL_EN); +- val |= MVNETA_GMAC_INBAND_AN_ENABLE | +- MVNETA_GMAC_AN_SPEED_EN | +- MVNETA_GMAC_AN_DUPLEX_EN; +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); +- val |= MVNETA_GMAC_1MS_CLOCK_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); +- val |= MVNETA_GMAC2_INBAND_AN_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); +- } else { +- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE | +- MVNETA_GMAC_AN_SPEED_EN | +- MVNETA_GMAC_AN_DUPLEX_EN); +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); +- val &= ~MVNETA_GMAC_1MS_CLOCK_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val); +- +- val = mvreg_read(pp, MVNETA_GMAC_CTRL_2); +- val &= ~MVNETA_GMAC2_INBAND_AN_ENABLE; +- mvreg_write(pp, MVNETA_GMAC_CTRL_2, val); +- } +-} +- + static void mvneta_percpu_unmask_interrupt(void *arg) + { + struct mvneta_port *pp = arg; +@@ -1421,7 +1385,6 @@ static void mvneta_defaults_set(struct m + val &= ~MVNETA_PHY_POLLING_ENABLE; + mvreg_write(pp, MVNETA_UNIT_CONTROL, val); + +- mvneta_set_autoneg(pp, pp->use_inband_status); + mvneta_set_ucast_table(pp, -1); + mvneta_set_special_mcast_table(pp, -1); + mvneta_set_other_mcast_table(pp, -1); +@@ -2614,26 +2577,11 @@ static irqreturn_t mvneta_isr(int irq, v + return IRQ_HANDLED; + } + +-static int mvneta_fixed_link_update(struct mvneta_port *pp, +- struct phy_device *phy) ++static void mvneta_link_change(struct mvneta_port *pp) + { +- struct fixed_phy_status status; +- struct fixed_phy_status changed = {}; + u32 gmac_stat = mvreg_read(pp, MVNETA_GMAC_STATUS); + +- status.link = !!(gmac_stat & MVNETA_GMAC_LINK_UP); +- if (gmac_stat & MVNETA_GMAC_SPEED_1000) +- status.speed = SPEED_1000; +- else if (gmac_stat & MVNETA_GMAC_SPEED_100) +- status.speed = SPEED_100; +- else +- status.speed = SPEED_10; +- status.duplex = !!(gmac_stat & MVNETA_GMAC_FULL_DUPLEX); +- changed.link = 1; +- changed.speed = 1; +- changed.duplex = 1; +- fixed_phy_update_state(phy, &status, &changed); +- return 0; ++ phylink_mac_change(pp->phylink, !!(gmac_stat & MVNETA_GMAC_LINK_UP)); + } + + /* NAPI handler +@@ -2662,12 +2610,11 @@ static int mvneta_poll(struct napi_struc + u32 cause_misc = mvreg_read(pp, MVNETA_INTR_MISC_CAUSE); + + mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0); +- if (pp->use_inband_status && (cause_misc & +- (MVNETA_CAUSE_PHY_STATUS_CHANGE | +- MVNETA_CAUSE_LINK_CHANGE | +- MVNETA_CAUSE_PSC_SYNC_CHANGE))) { +- mvneta_fixed_link_update(pp, pp->phy_dev); +- } ++ ++ if (cause_misc & (MVNETA_CAUSE_PHY_STATUS_CHANGE | ++ MVNETA_CAUSE_LINK_CHANGE | ++ MVNETA_CAUSE_PSC_SYNC_CHANGE)) ++ mvneta_link_change(pp); + } + + /* Release Tx descriptors */ +@@ -2983,7 +2930,7 @@ static void mvneta_start_dev(struct mvne + MVNETA_CAUSE_LINK_CHANGE | + MVNETA_CAUSE_PSC_SYNC_CHANGE); + +- phy_start(pp->phy_dev); ++ phylink_start(pp->phylink); + netif_tx_start_all_queues(pp->dev); + } + +@@ -2991,7 +2938,7 @@ static void mvneta_stop_dev(struct mvnet + { + unsigned int cpu; + +- phy_stop(pp->phy_dev); ++ phylink_stop(pp->phylink); + + for_each_online_cpu(cpu) { + struct mvneta_pcpu_port *port = per_cpu_ptr(pp->ports, cpu); +@@ -3161,99 +3108,219 @@ static int mvneta_set_mac_addr(struct ne + return 0; + } + +-static void mvneta_adjust_link(struct net_device *ndev) ++static int mvneta_mac_support(struct net_device *ndev, unsigned int mode, ++ struct phylink_link_state *state) ++{ ++ switch (mode) { ++ case MLO_AN_8023Z: ++ state->supported = SUPPORTED_1000baseT_Full | ++ SUPPORTED_Autoneg | SUPPORTED_Pause; ++ state->advertising = ADVERTISED_1000baseT_Full | ++ ADVERTISED_Autoneg | ADVERTISED_Pause; ++ state->an_enabled = 1; ++ break; ++ ++ case MLO_AN_FIXED: ++ break; ++ ++ default: ++ state->supported = PHY_10BT_FEATURES | ++ PHY_100BT_FEATURES | ++ SUPPORTED_1000baseT_Full | ++ SUPPORTED_Autoneg; ++ state->advertising = ADVERTISED_10baseT_Half | ++ ADVERTISED_10baseT_Full | ++ ADVERTISED_100baseT_Half | ++ ADVERTISED_100baseT_Full | ++ ADVERTISED_1000baseT_Full | ++ ADVERTISED_Autoneg; ++ state->an_enabled = 1; ++ break; ++ } ++ return 0; ++} ++ ++static int mvneta_mac_link_state(struct net_device *ndev, ++ struct phylink_link_state *state) + { + struct mvneta_port *pp = netdev_priv(ndev); +- struct phy_device *phydev = pp->phy_dev; +- int status_change = 0; ++ u32 gmac_stat; + +- if (phydev->link) { +- if ((pp->speed != phydev->speed) || +- (pp->duplex != phydev->duplex)) { +- u32 val; +- +- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED | +- MVNETA_GMAC_CONFIG_GMII_SPEED | +- MVNETA_GMAC_CONFIG_FULL_DUPLEX); +- +- if (phydev->duplex) +- val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX; +- +- if (phydev->speed == SPEED_1000) +- val |= MVNETA_GMAC_CONFIG_GMII_SPEED; +- else if (phydev->speed == SPEED_100) +- val |= MVNETA_GMAC_CONFIG_MII_SPEED; ++ gmac_stat = mvreg_read(pp, MVNETA_GMAC_STATUS); + +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ if (gmac_stat & MVNETA_GMAC_SPEED_1000) ++ state->speed = SPEED_1000; ++ else if (gmac_stat & MVNETA_GMAC_SPEED_100) ++ state->speed = SPEED_100; ++ else ++ state->speed = SPEED_10; + +- pp->duplex = phydev->duplex; +- pp->speed = phydev->speed; +- } ++ state->an_complete = !!(gmac_stat & MVNETA_GMAC_AN_COMPLETE); ++ state->sync = !!(gmac_stat & MVNETA_GMAC_SYNC_OK); ++ state->link = !!(gmac_stat & MVNETA_GMAC_LINK_UP); ++ state->duplex = !!(gmac_stat & MVNETA_GMAC_FULL_DUPLEX); ++ ++ state->pause = 0; ++ if (gmac_stat & MVNETA_GMAC_RX_FLOW_CTRL_ENABLE) ++ state->pause |= MLO_PAUSE_RX; ++ if (gmac_stat & MVNETA_GMAC_TX_FLOW_CTRL_ENABLE) ++ state->pause |= MLO_PAUSE_TX; ++ ++ return 1; ++} ++ ++static void mvneta_mac_an_restart(struct net_device *ndev, unsigned int mode) ++{ ++ struct mvneta_port *pp = netdev_priv(ndev); ++ ++ if (mode == MLO_AN_8023Z) { ++ u32 gmac_an = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, ++ gmac_an | MVNETA_GMAC_INBAND_RESTART_AN); ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, ++ gmac_an & ~MVNETA_GMAC_INBAND_RESTART_AN); + } ++} + +- if (phydev->link != pp->link) { +- if (!phydev->link) { +- pp->duplex = -1; +- pp->speed = 0; +- } ++static void mvneta_mac_config(struct net_device *ndev, unsigned int mode, ++ const struct phylink_link_state *state) ++{ ++ struct mvneta_port *pp = netdev_priv(ndev); ++ u32 new_ctrl0, gmac_ctrl0 = mvreg_read(pp, MVNETA_GMAC_CTRL_0); ++ u32 new_ctrl2, gmac_ctrl2 = mvreg_read(pp, MVNETA_GMAC_CTRL_2); ++ u32 new_clk, gmac_clk = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER); ++ u32 new_an, gmac_an = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ ++ new_ctrl0 = gmac_ctrl0 & ~MVNETA_GMAC0_PORT_1000BASE_X; ++ new_ctrl2 = gmac_ctrl2 & ~MVNETA_GMAC2_INBAND_AN_ENABLE; ++ new_clk = gmac_clk & ~MVNETA_GMAC_1MS_CLOCK_ENABLE; ++ new_an = gmac_an & ~(MVNETA_GMAC_INBAND_AN_ENABLE | ++ MVNETA_GMAC_INBAND_RESTART_AN | ++ MVNETA_GMAC_CONFIG_MII_SPEED | ++ MVNETA_GMAC_CONFIG_GMII_SPEED | ++ MVNETA_GMAC_AN_SPEED_EN | ++ MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL | ++ MVNETA_GMAC_CONFIG_FLOW_CTRL | ++ MVNETA_GMAC_AN_FLOW_CTRL_EN | ++ MVNETA_GMAC_CONFIG_FULL_DUPLEX | ++ MVNETA_GMAC_AN_DUPLEX_EN); ++ ++ if (state->advertising & ADVERTISED_Pause) ++ new_an |= MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL; ++ ++ switch (mode) { ++ case MLO_AN_SGMII: ++ /* SGMII mode receives the state from the PHY */ ++ new_ctrl2 |= MVNETA_GMAC2_INBAND_AN_ENABLE; ++ new_clk |= MVNETA_GMAC_1MS_CLOCK_ENABLE; ++ new_an = (new_an & ~(MVNETA_GMAC_FORCE_LINK_DOWN | ++ MVNETA_GMAC_FORCE_LINK_PASS)) | ++ MVNETA_GMAC_INBAND_AN_ENABLE | ++ MVNETA_GMAC_AN_SPEED_EN | ++ MVNETA_GMAC_AN_DUPLEX_EN; ++ break; ++ ++ case MLO_AN_8023Z: ++ /* 802.3z negotiation - only 1000base-X */ ++ new_ctrl0 |= MVNETA_GMAC0_PORT_1000BASE_X; ++ new_clk |= MVNETA_GMAC_1MS_CLOCK_ENABLE; ++ new_an = (new_an & ~(MVNETA_GMAC_FORCE_LINK_DOWN | ++ MVNETA_GMAC_FORCE_LINK_PASS)) | ++ MVNETA_GMAC_INBAND_AN_ENABLE | ++ MVNETA_GMAC_CONFIG_GMII_SPEED | ++ /* The MAC only supports FD mode */ ++ MVNETA_GMAC_CONFIG_FULL_DUPLEX; ++ ++ if (state->an_enabled) ++ new_an |= MVNETA_GMAC_AN_FLOW_CTRL_EN; ++ break; + +- pp->link = phydev->link; +- status_change = 1; ++ default: ++ /* Phy or fixed speed */ ++ if (state->duplex) ++ new_an |= MVNETA_GMAC_CONFIG_FULL_DUPLEX; ++ ++ if (state->speed == SPEED_1000) ++ new_an |= MVNETA_GMAC_CONFIG_GMII_SPEED; ++ else if (state->speed == SPEED_100) ++ new_an |= MVNETA_GMAC_CONFIG_MII_SPEED; ++ break; + } + +- if (status_change) { +- if (phydev->link) { +- if (!pp->use_inband_status) { +- u32 val = mvreg_read(pp, +- MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~MVNETA_GMAC_FORCE_LINK_DOWN; +- val |= MVNETA_GMAC_FORCE_LINK_PASS; +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, +- val); +- } +- mvneta_port_up(pp); +- } else { +- if (!pp->use_inband_status) { +- u32 val = mvreg_read(pp, +- MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~MVNETA_GMAC_FORCE_LINK_PASS; +- val |= MVNETA_GMAC_FORCE_LINK_DOWN; +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, +- val); +- } +- mvneta_port_down(pp); +- } +- phy_print_status(phydev); ++ /* Armada 370 documentation says we can only change the port mode ++ * and in-band enable when the link is down, so force it down ++ * while making these changes. We also do this for GMAC_CTRL2 */ ++ if ((new_ctrl0 ^ gmac_ctrl0) & MVNETA_GMAC0_PORT_1000BASE_X || ++ (new_ctrl2 ^ gmac_ctrl2) & MVNETA_GMAC2_INBAND_AN_ENABLE || ++ (new_an ^ gmac_an) & MVNETA_GMAC_INBAND_AN_ENABLE) { ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, ++ (gmac_an & ~MVNETA_GMAC_FORCE_LINK_PASS) | ++ MVNETA_GMAC_FORCE_LINK_DOWN); ++ } ++ ++ if (new_ctrl0 != gmac_ctrl0) ++ mvreg_write(pp, MVNETA_GMAC_CTRL_0, new_ctrl0); ++ if (new_ctrl2 != gmac_ctrl2) ++ mvreg_write(pp, MVNETA_GMAC_CTRL_2, new_ctrl2); ++ if (new_clk != gmac_clk) ++ mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, new_clk); ++ if (new_an != gmac_an) ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, new_an); ++} ++ ++static void mvneta_mac_link_down(struct net_device *ndev, unsigned int mode) ++{ ++ struct mvneta_port *pp = netdev_priv(ndev); ++ u32 val; ++ ++ mvneta_port_down(pp); ++ ++ if (mode == MLO_AN_PHY || mode == MLO_AN_FIXED) { ++ val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ val &= ~MVNETA_GMAC_FORCE_LINK_PASS; ++ val |= MVNETA_GMAC_FORCE_LINK_DOWN; ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); + } + } + +-static int mvneta_mdio_probe(struct mvneta_port *pp) ++static void mvneta_mac_link_up(struct net_device *ndev, unsigned int mode, ++ struct phy_device *phy) + { +- struct phy_device *phy_dev; ++ struct mvneta_port *pp = netdev_priv(ndev); ++ u32 val; ++ ++ if (mode == MLO_AN_PHY || mode == MLO_AN_FIXED) { ++ val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); ++ val &= ~MVNETA_GMAC_FORCE_LINK_DOWN; ++ val |= MVNETA_GMAC_FORCE_LINK_PASS; ++ mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); ++ } + +- phy_dev = of_phy_connect(pp->dev, pp->phy_node, mvneta_adjust_link, 0, +- pp->phy_interface); +- if (!phy_dev) { +- netdev_err(pp->dev, "could not find the PHY\n"); +- return -ENODEV; +- } +- +- phy_dev->supported &= PHY_GBIT_FEATURES; +- phy_dev->advertising = phy_dev->supported; +- +- pp->phy_dev = phy_dev; +- pp->link = 0; +- pp->duplex = 0; +- pp->speed = 0; ++ mvneta_port_up(pp); ++} + +- return 0; ++static const struct phylink_mac_ops mvneta_phylink_ops = { ++ .mac_get_support = mvneta_mac_support, ++ .mac_link_state = mvneta_mac_link_state, ++ .mac_an_restart = mvneta_mac_an_restart, ++ .mac_config = mvneta_mac_config, ++ .mac_link_down = mvneta_mac_link_down, ++ .mac_link_up = mvneta_mac_link_up, ++}; ++ ++static int mvneta_mdio_probe(struct mvneta_port *pp) ++{ ++ int err = phylink_of_phy_connect(pp->phylink, pp->dn); ++ if (err) ++ netdev_err(pp->dev, "could not attach PHY\n"); ++ ++ return err; + } + + static void mvneta_mdio_remove(struct mvneta_port *pp) + { +- phy_disconnect(pp->phy_dev); +- pp->phy_dev = NULL; ++ phylink_disconnect_phy(pp->phylink); + } + + /* Electing a CPU must be done in an atomic way: it should be done +@@ -3501,10 +3568,7 @@ static int mvneta_ioctl(struct net_devic + { + struct mvneta_port *pp = netdev_priv(dev); + +- if (!pp->phy_dev) +- return -ENOTSUPP; +- +- return phy_mii_ioctl(pp->phy_dev, ifr, cmd); ++ return phylink_mii_ioctl(pp->phylink, ifr, cmd); + } + + /* Ethtool methods */ +@@ -3514,54 +3578,15 @@ int mvneta_ethtool_get_settings(struct n + { + struct mvneta_port *pp = netdev_priv(dev); + +- if (!pp->phy_dev) +- return -ENODEV; +- +- return phy_ethtool_gset(pp->phy_dev, cmd); ++ return phylink_ethtool_get_settings(pp->phylink, cmd); + } + + /* Set settings (phy address, speed) for ethtools */ + int mvneta_ethtool_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) + { + struct mvneta_port *pp = netdev_priv(dev); +- struct phy_device *phydev = pp->phy_dev; +- +- if (!phydev) +- return -ENODEV; + +- if ((cmd->autoneg == AUTONEG_ENABLE) != pp->use_inband_status) { +- u32 val; +- +- mvneta_set_autoneg(pp, cmd->autoneg == AUTONEG_ENABLE); +- +- if (cmd->autoneg == AUTONEG_DISABLE) { +- val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG); +- val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED | +- MVNETA_GMAC_CONFIG_GMII_SPEED | +- MVNETA_GMAC_CONFIG_FULL_DUPLEX); +- +- if (phydev->duplex) +- val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX; +- +- if (phydev->speed == SPEED_1000) +- val |= MVNETA_GMAC_CONFIG_GMII_SPEED; +- else if (phydev->speed == SPEED_100) +- val |= MVNETA_GMAC_CONFIG_MII_SPEED; +- +- mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); +- } +- +- pp->use_inband_status = (cmd->autoneg == AUTONEG_ENABLE); +- netdev_info(pp->dev, "autoneg status set to %i\n", +- pp->use_inband_status); +- +- if (netif_running(dev)) { +- mvneta_port_down(pp); +- mvneta_port_up(pp); +- } +- } +- +- return phy_ethtool_sset(pp->phy_dev, cmd); ++ return phylink_ethtool_set_settings(pp->phylink, cmd); + } + + /* Set interrupt coalescing for ethtools */ +@@ -3669,7 +3694,8 @@ static void mvneta_ethtool_update_stats( + { + const struct mvneta_statistic *s; + void __iomem *base = pp->base; +- u32 high, low, val; ++ u32 high, low; ++ u64 val; + u64 val64; + int i; + +@@ -3964,14 +3990,13 @@ static int mvneta_probe(struct platform_ + const struct mbus_dram_target_info *dram_target_info; + struct resource *res; + struct device_node *dn = pdev->dev.of_node; +- struct device_node *phy_node; + struct device_node *bm_node; + struct mvneta_port *pp; + struct net_device *dev; ++ struct phylink *phylink; + const char *dt_mac_addr; + char hw_mac_addr[ETH_ALEN]; + const char *mac_from; +- const char *managed; + int tx_csum_limit; + int phy_mode; + int err; +@@ -3987,31 +4012,11 @@ static int mvneta_probe(struct platform_ + goto err_free_netdev; + } + +- phy_node = of_parse_phandle(dn, "phy", 0); +- if (!phy_node) { +- if (!of_phy_is_fixed_link(dn)) { +- dev_err(&pdev->dev, "no PHY specified\n"); +- err = -ENODEV; +- goto err_free_irq; +- } +- +- err = of_phy_register_fixed_link(dn); +- if (err < 0) { +- dev_err(&pdev->dev, "cannot register fixed PHY\n"); +- goto err_free_irq; +- } +- +- /* In the case of a fixed PHY, the DT node associated +- * to the PHY is the Ethernet MAC DT node. +- */ +- phy_node = of_node_get(dn); +- } +- + phy_mode = of_get_phy_mode(dn); + if (phy_mode < 0) { + dev_err(&pdev->dev, "incorrect phy-mode\n"); + err = -EINVAL; +- goto err_put_phy_node; ++ goto err_free_irq; + } + + dev->tx_queue_len = MVNETA_MAX_TXD; +@@ -4022,12 +4027,7 @@ static int mvneta_probe(struct platform_ + + pp = netdev_priv(dev); + spin_lock_init(&pp->lock); +- pp->phy_node = phy_node; +- pp->phy_interface = phy_mode; +- +- err = of_property_read_string(dn, "managed", &managed); +- pp->use_inband_status = (err == 0 && +- strcmp(managed, "in-band-status") == 0); ++ pp->dn = dn; + pp->cpu_notifier.notifier_call = mvneta_percpu_notifier; + + pp->rxq_def = rxq_def; +@@ -4037,7 +4037,7 @@ static int mvneta_probe(struct platform_ + pp->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pp->clk)) { + err = PTR_ERR(pp->clk); +- goto err_put_phy_node; ++ goto err_free_irq; + } + + clk_prepare_enable(pp->clk); +@@ -4140,6 +4140,14 @@ static int mvneta_probe(struct platform_ + dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; + dev->gso_max_segs = MVNETA_MAX_TSO_SEGS; + ++ phylink = phylink_create(dev, dn, phy_mode, &mvneta_phylink_ops); ++ if (IS_ERR(phylink)) { ++ err = PTR_ERR(phylink); ++ goto err_free_stats; ++ } ++ ++ pp->phylink = phylink; ++ + err = register_netdev(dev); + if (err < 0) { + dev_err(&pdev->dev, "failed to register\n"); +@@ -4151,13 +4159,6 @@ static int mvneta_probe(struct platform_ + + platform_set_drvdata(pdev, pp->dev); + +- if (pp->use_inband_status) { +- struct phy_device *phy = of_phy_find_device(dn); +- +- mvneta_fixed_link_update(pp, phy); +- +- put_device(&phy->dev); +- } + + return 0; + +@@ -4169,13 +4170,13 @@ err_netdev: + 1 << pp->id); + } + err_free_stats: ++ if (pp->phylink) ++ phylink_destroy(pp->phylink); + free_percpu(pp->stats); + err_free_ports: + free_percpu(pp->ports); + err_clk: + clk_disable_unprepare(pp->clk); +-err_put_phy_node: +- of_node_put(phy_node); + err_free_irq: + irq_dispose_mapping(dev->irq); + err_free_netdev: +@@ -4194,7 +4195,7 @@ static int mvneta_remove(struct platform + free_percpu(pp->ports); + free_percpu(pp->stats); + irq_dispose_mapping(dev->irq); +- of_node_put(pp->phy_node); ++ phylink_destroy(pp->phylink); + free_netdev(dev); + + if (pp->bm_priv) { diff --git a/target/linux/mvebu/patches-4.4/135-phy-fixed-phy-remove-fixed_phy_update_state.patch b/target/linux/mvebu/patches-4.4/135-phy-fixed-phy-remove-fixed_phy_update_state.patch new file mode 100644 index 0000000..58c9aab --- /dev/null +++ b/target/linux/mvebu/patches-4.4/135-phy-fixed-phy-remove-fixed_phy_update_state.patch @@ -0,0 +1,80 @@ +From 9be436bdb67c1f4aa9f33f2477f94e1f58a0ff02 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Fri, 2 Oct 2015 22:46:54 +0100 +Subject: [PATCH 723/744] phy: fixed-phy: remove fixed_phy_update_state() + +mvneta is the only user of fixed_phy_update_state(), which has been +converted to use phylink instead. Remove fixed_phy_update_state(). + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/fixed_phy.c | 31 ------------------------------- + include/linux/phy_fixed.h | 9 --------- + 2 files changed, 40 deletions(-) + +--- a/drivers/net/phy/fixed_phy.c ++++ b/drivers/net/phy/fixed_phy.c +@@ -115,37 +115,6 @@ int fixed_phy_set_link_update(struct phy + } + EXPORT_SYMBOL_GPL(fixed_phy_set_link_update); + +-int fixed_phy_update_state(struct phy_device *phydev, +- const struct fixed_phy_status *status, +- const struct fixed_phy_status *changed) +-{ +- struct fixed_mdio_bus *fmb = &platform_fmb; +- struct fixed_phy *fp; +- +- if (!phydev || phydev->bus != fmb->mii_bus) +- return -EINVAL; +- +- list_for_each_entry(fp, &fmb->phys, node) { +- if (fp->addr == phydev->addr) { +- write_seqcount_begin(&fp->seqcount); +-#define _UPD(x) if (changed->x) \ +- fp->status.x = status->x +- _UPD(link); +- _UPD(speed); +- _UPD(duplex); +- _UPD(pause); +- _UPD(asym_pause); +-#undef _UPD +- fixed_phy_update(fp); +- write_seqcount_end(&fp->seqcount); +- return 0; +- } +- } +- +- return -ENOENT; +-} +-EXPORT_SYMBOL(fixed_phy_update_state); +- + int fixed_phy_add(unsigned int irq, int phy_addr, + struct fixed_phy_status *status, + int link_gpio) +--- a/include/linux/phy_fixed.h ++++ b/include/linux/phy_fixed.h +@@ -23,9 +23,6 @@ extern void fixed_phy_del(int phy_addr); + extern int fixed_phy_set_link_update(struct phy_device *phydev, + int (*link_update)(struct net_device *, + struct fixed_phy_status *)); +-extern int fixed_phy_update_state(struct phy_device *phydev, +- const struct fixed_phy_status *status, +- const struct fixed_phy_status *changed); + #else + static inline int fixed_phy_add(unsigned int irq, int phy_id, + struct fixed_phy_status *status, +@@ -50,12 +47,6 @@ static inline int fixed_phy_set_link_upd + { + return -ENODEV; + } +-static inline int fixed_phy_update_state(struct phy_device *phydev, +- const struct fixed_phy_status *status, +- const struct fixed_phy_status *changed) +-{ +- return -ENODEV; +-} + #endif /* CONFIG_FIXED_PHY */ + + #endif /* __PHY_FIXED_H */ diff --git a/target/linux/mvebu/patches-4.4/136-phylink-add-ethtool-nway_reset-support.patch b/target/linux/mvebu/patches-4.4/136-phylink-add-ethtool-nway_reset-support.patch new file mode 100644 index 0000000..ade904e --- /dev/null +++ b/target/linux/mvebu/patches-4.4/136-phylink-add-ethtool-nway_reset-support.patch @@ -0,0 +1,48 @@ +From d6bd25b692378ec17bdb1023d398c03c45829947 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 20:27:19 +0100 +Subject: [PATCH 724/744] phylink: add ethtool nway_reset support + +Add ethtool nway_reset support to phylink, to allow userspace to +request a re-negotiation of the link. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phylink.c | 14 ++++++++++++++ + include/linux/phylink.h | 1 + + 2 files changed, 15 insertions(+) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -687,6 +687,20 @@ int phylink_ethtool_set_settings(struct + } + EXPORT_SYMBOL_GPL(phylink_ethtool_set_settings); + ++int phylink_ethtool_nway_reset(struct phylink *pl) ++{ ++ int ret = 0; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->phydev) ++ ret = genphy_restart_aneg(pl->phydev); ++ phylink_mac_an_restart(pl); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset); ++ + /* This emulates MII registers for a fixed-mode phy operating as per the + * passed in state. "aneg" defines if we report negotiation is possible. + * +--- a/include/linux/phylink.h ++++ b/include/linux/phylink.h +@@ -65,6 +65,7 @@ void phylink_stop(struct phylink *); + + int phylink_ethtool_get_settings(struct phylink *, struct ethtool_cmd *); + int phylink_ethtool_set_settings(struct phylink *, struct ethtool_cmd *); ++int phylink_ethtool_nway_reset(struct phylink *); + int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); + + void phylink_set_link_port(struct phylink *pl, u32 support, u8 port); diff --git a/target/linux/mvebu/patches-4.4/137-net-mvneta-add-nway_reset-support.patch b/target/linux/mvebu/patches-4.4/137-net-mvneta-add-nway_reset-support.patch new file mode 100644 index 0000000..034b596 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/137-net-mvneta-add-nway_reset-support.patch @@ -0,0 +1,38 @@ +From 244bee2889d08f876c64c335765a8ea6de0f5381 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 19:40:31 +0100 +Subject: [PATCH 725/744] net: mvneta: add nway_reset support + +Add ethtool nway_reset support to mvneta via phylink, so that userspace +can request the link in whatever mode to be renegotiated via +ethtool -r ethX. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/ethernet/marvell/mvneta.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3589,6 +3589,13 @@ int mvneta_ethtool_set_settings(struct n + return phylink_ethtool_set_settings(pp->phylink, cmd); + } + ++static int mvneta_ethtool_nway_reset(struct net_device *dev) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ ++ return phylink_ethtool_nway_reset(pp->phylink); ++} ++ + /* Set interrupt coalescing for ethtools */ + static int mvneta_ethtool_set_coalesce(struct net_device *dev, + struct ethtool_coalesce *c) +@@ -3853,6 +3860,7 @@ const struct ethtool_ops mvneta_eth_tool + .get_link = ethtool_op_get_link, + .get_settings = mvneta_ethtool_get_settings, + .set_settings = mvneta_ethtool_set_settings, ++ .nway_reset = mvneta_ethtool_nway_reset, + .set_coalesce = mvneta_ethtool_set_coalesce, + .get_coalesce = mvneta_ethtool_get_coalesce, + .get_drvinfo = mvneta_ethtool_get_drvinfo, diff --git a/target/linux/mvebu/patches-4.4/138-phylink-add-flow-control-support.patch b/target/linux/mvebu/patches-4.4/138-phylink-add-flow-control-support.patch new file mode 100644 index 0000000..95b8a81 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/138-phylink-add-flow-control-support.patch @@ -0,0 +1,262 @@ +From f566177aa6661e646b83526f24391a568ffd1a75 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 20:32:07 +0100 +Subject: [PATCH 726/744] phylink: add flow control support + +Add flow control support, including ethtool support, to phylink. We +add support to allow ethtool to get and set the current flow control +settings, and the 802.3 specified resolution for the local and remote +link partner abilities. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phylink.c | 145 +++++++++++++++++++++++++++++++++++++++++----- + include/linux/phylink.h | 8 +++ + 2 files changed, 139 insertions(+), 14 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -91,10 +91,12 @@ static int phylink_parse_fixedlink(struc + pl->link_config.an_complete = 1; + pl->link_config.speed = speed; + pl->link_config.duplex = DUPLEX_HALF; +- pl->link_config.pause = MLO_PAUSE_NONE; + + if (of_property_read_bool(fixed_node, "full-duplex")) + pl->link_config.duplex = DUPLEX_FULL; ++ ++ /* We treat the "pause" and "asym-pause" terminology as ++ * defining the link partner's ability. */ + if (of_property_read_bool(fixed_node, "pause")) + pl->link_config.pause |= MLO_PAUSE_SYM; + if (of_property_read_bool(fixed_node, "asym-pause")) +@@ -118,7 +120,6 @@ static int phylink_parse_fixedlink(struc + pl->link_config.duplex = be32_to_cpu(fixed_prop[1]) ? + DUPLEX_FULL : DUPLEX_HALF; + pl->link_config.speed = be32_to_cpu(fixed_prop[2]); +- pl->link_config.pause = MLO_PAUSE_NONE; + if (be32_to_cpu(fixed_prop[3])) + pl->link_config.pause |= MLO_PAUSE_SYM; + if (be32_to_cpu(fixed_prop[4])) +@@ -130,16 +131,6 @@ static int phylink_parse_fixedlink(struc + } + + if (pl->link_an_mode == MLO_AN_FIXED) { +- /* Generate the supported/advertising masks */ +- if (pl->link_config.pause & MLO_PAUSE_SYM) { +- pl->link_config.supported |= SUPPORTED_Pause; +- pl->link_config.advertising |= ADVERTISED_Pause; +- } +- if (pl->link_config.pause & MLO_PAUSE_ASYM) { +- pl->link_config.supported |= SUPPORTED_Asym_Pause; +- pl->link_config.advertising |= ADVERTISED_Asym_Pause; +- } +- + if (pl->link_config.speed > SPEED_1000 && + pl->link_config.duplex != DUPLEX_FULL) + netdev_warn(pl->netdev, "fixed link specifies half duplex for %dMbps link?\n", +@@ -242,6 +233,56 @@ static void phylink_get_fixed_state(stru + state->link = !!gpiod_get_value(pl->link_gpio); + } + ++/* Flow control is resolved according to our and the link partners ++ * advertisments using the following drawn from the 802.3 specs: ++ * Local device Link partner ++ * Pause AsymDir Pause AsymDir Result ++ * 1 X 1 X TX+RX ++ * 0 1 1 1 RX ++ * 1 1 0 1 TX ++ */ ++static void phylink_resolve_flow(struct phylink *pl, ++ struct phylink_link_state *state) ++{ ++ int new_pause = 0; ++ ++ if (pl->link_config.pause & MLO_PAUSE_AN) { ++ int pause = 0; ++ ++ if (pl->link_config.advertising & ADVERTISED_Pause) ++ pause |= MLO_PAUSE_SYM; ++ if (pl->link_config.advertising & ADVERTISED_Asym_Pause) ++ pause |= MLO_PAUSE_ASYM; ++ ++ pause &= state->pause; ++ ++ if (pause & MLO_PAUSE_SYM) ++ new_pause = MLO_PAUSE_TX | MLO_PAUSE_RX; ++ else if (pause & MLO_PAUSE_ASYM) ++ new_pause = state->pause & MLO_PAUSE_SYM ? ++ MLO_PAUSE_RX : MLO_PAUSE_TX; ++ } else { ++ new_pause = pl->link_config.pause & MLO_PAUSE_TXRX_MASK; ++ } ++ ++ state->pause &= ~MLO_PAUSE_TXRX_MASK; ++ state->pause |= new_pause; ++} ++ ++static const char *phylink_pause_to_str(int pause) ++{ ++ switch (pause & MLO_PAUSE_TXRX_MASK) { ++ case MLO_PAUSE_TX | MLO_PAUSE_RX: ++ return "rx/tx"; ++ case MLO_PAUSE_TX: ++ return "tx"; ++ case MLO_PAUSE_RX: ++ return "rx"; ++ default: ++ return "off"; ++ } ++} ++ + extern const char *phy_speed_to_str(int speed); + + static void phylink_resolve(struct work_struct *w) +@@ -257,6 +298,7 @@ static void phylink_resolve(struct work_ + switch (pl->link_an_mode) { + case MLO_AN_PHY: + link_state = pl->phy_state; ++ phylink_resolve_flow(pl, &link_state); + break; + + case MLO_AN_FIXED: +@@ -265,9 +307,12 @@ static void phylink_resolve(struct work_ + + case MLO_AN_SGMII: + phylink_get_mac_state(pl, &link_state); +- if (pl->phydev) ++ if (pl->phydev) { + link_state.link = link_state.link && + pl->phy_state.link; ++ link_state.pause |= pl->phy_state.pause; ++ phylink_resolve_flow(pl, &link_state); ++ } + break; + + case MLO_AN_8023Z: +@@ -297,7 +342,7 @@ static void phylink_resolve(struct work_ + "Link is Up - %s/%s - flow control %s\n", + phy_speed_to_str(link_state.speed), + link_state.duplex ? "Full" : "Half", +- link_state.pause ? "rx/tx" : "off"); ++ phylink_pause_to_str(link_state.pause)); + } + } + mutex_unlock(&pl->state_mutex); +@@ -326,6 +371,7 @@ struct phylink *phylink_create(struct ne + pl->link_interface = iface; + pl->link_port_support = SUPPORTED_MII; + pl->link_port = PORT_MII; ++ pl->link_config.pause = MLO_PAUSE_AN; + pl->ops = ops; + __set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); + +@@ -507,6 +553,7 @@ void phylink_start(struct phylink *pl) + * a fixed-link to start with the correct parameters, and also + * ensures that we set the appropriate advertisment for Serdes links. + */ ++ phylink_resolve_flow(pl, &pl->link_config); + phylink_mac_config(pl, &pl->link_config); + + clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); +@@ -701,6 +748,76 @@ int phylink_ethtool_nway_reset(struct ph + } + EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset); + ++void phylink_ethtool_get_pauseparam(struct phylink *pl, ++ struct ethtool_pauseparam *pause) ++{ ++ mutex_lock(&pl->config_mutex); ++ ++ pause->autoneg = !!(pl->link_config.pause & MLO_PAUSE_AN); ++ pause->rx_pause = !!(pl->link_config.pause & MLO_PAUSE_RX); ++ pause->tx_pause = !!(pl->link_config.pause & MLO_PAUSE_TX); ++ ++ mutex_unlock(&pl->config_mutex); ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_get_pauseparam); ++ ++static int __phylink_ethtool_set_pauseparam(struct phylink *pl, ++ struct ethtool_pauseparam *pause) ++{ ++ struct phylink_link_state *config = &pl->link_config; ++ ++ if (!(config->supported & (SUPPORTED_Pause | SUPPORTED_Asym_Pause))) ++ return -EOPNOTSUPP; ++ ++ if (!(config->supported & SUPPORTED_Asym_Pause) && ++ !pause->autoneg && pause->rx_pause != pause->tx_pause) ++ return -EINVAL; ++ ++ config->pause &= ~(MLO_PAUSE_AN | MLO_PAUSE_TXRX_MASK); ++ ++ if (pause->autoneg) ++ config->pause |= MLO_PAUSE_AN; ++ if (pause->rx_pause) ++ config->pause |= MLO_PAUSE_RX; ++ if (pause->tx_pause) ++ config->pause |= MLO_PAUSE_TX; ++ ++ 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); ++ phylink_mac_config(pl, config); ++ break; ++ ++ case MLO_AN_SGMII: ++ case MLO_AN_8023Z: ++ phylink_mac_config(pl, config); ++ phylink_mac_an_restart(pl); ++ break; ++ } ++ ++ return 0; ++} ++ ++int phylink_ethtool_set_pauseparam(struct phylink *pl, ++ struct ethtool_pauseparam *pause) ++{ ++ int ret; ++ ++ mutex_lock(&pl->config_mutex); ++ ret = __phylink_ethtool_set_pauseparam(pl, pause); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam); ++ + /* This emulates MII registers for a fixed-mode phy operating as per the + * passed in state. "aneg" defines if we report negotiation is possible. + * +--- a/include/linux/phylink.h ++++ b/include/linux/phylink.h +@@ -13,6 +13,10 @@ enum { + MLO_PAUSE_NONE, + MLO_PAUSE_ASYM = BIT(0), + MLO_PAUSE_SYM = BIT(1), ++ MLO_PAUSE_RX = BIT(2), ++ MLO_PAUSE_TX = BIT(3), ++ MLO_PAUSE_TXRX_MASK = MLO_PAUSE_TX | MLO_PAUSE_RX, ++ MLO_PAUSE_AN = BIT(4), + + MLO_AN_PHY = 0, + MLO_AN_FIXED, +@@ -66,6 +70,10 @@ void phylink_stop(struct phylink *); + int phylink_ethtool_get_settings(struct phylink *, struct ethtool_cmd *); + int phylink_ethtool_set_settings(struct phylink *, struct ethtool_cmd *); + int phylink_ethtool_nway_reset(struct phylink *); ++void phylink_ethtool_get_pauseparam(struct phylink *, ++ struct ethtool_pauseparam *); ++int phylink_ethtool_set_pauseparam(struct phylink *, ++ struct ethtool_pauseparam *); + int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); + + void phylink_set_link_port(struct phylink *pl, u32 support, u8 port); diff --git a/target/linux/mvebu/patches-4.4/139-net-mvneta-add-flow-control-support-via-phylink.patch b/target/linux/mvebu/patches-4.4/139-net-mvneta-add-flow-control-support-via-phylink.patch new file mode 100644 index 0000000..75cd46e --- /dev/null +++ b/target/linux/mvebu/patches-4.4/139-net-mvneta-add-flow-control-support-via-phylink.patch @@ -0,0 +1,66 @@ +From 7bd34822b9922beb22a6384d9190646105d259d8 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 17:41:44 +0100 +Subject: [PATCH 727/744] net: mvneta: add flow control support via phylink + +Add flow control support to mvneta, including the ethtool hooks. This +uses the phylink code to calculate the result of autonegotiation where +a phy is attached, and to handle the ethtool settings. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/ethernet/marvell/mvneta.c | 22 +++++++++++++++++++++- + 1 file changed, 21 insertions(+), 1 deletion(-) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3208,6 +3208,8 @@ static void mvneta_mac_config(struct net + + if (state->advertising & ADVERTISED_Pause) + new_an |= MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL; ++ if (state->pause & MLO_PAUSE_TXRX_MASK) ++ new_an |= MVNETA_GMAC_CONFIG_FLOW_CTRL; + + switch (mode) { + case MLO_AN_SGMII: +@@ -3232,7 +3234,7 @@ static void mvneta_mac_config(struct net + /* The MAC only supports FD mode */ + MVNETA_GMAC_CONFIG_FULL_DUPLEX; + +- if (state->an_enabled) ++ if (state->pause & MLO_PAUSE_AN && state->an_enabled) + new_an |= MVNETA_GMAC_AN_FLOW_CTRL_EN; + break; + +@@ -3685,6 +3687,22 @@ static int mvneta_ethtool_set_ringparam( + return 0; + } + ++static void mvneta_ethtool_get_pauseparam(struct net_device *dev, ++ struct ethtool_pauseparam *pause) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ ++ phylink_ethtool_get_pauseparam(pp->phylink, pause); ++} ++ ++static int mvneta_ethtool_set_pauseparam(struct net_device *dev, ++ struct ethtool_pauseparam *pause) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ ++ return phylink_ethtool_set_pauseparam(pp->phylink, pause); ++} ++ + static void mvneta_ethtool_get_strings(struct net_device *netdev, u32 sset, + u8 *data) + { +@@ -3866,6 +3884,8 @@ const struct ethtool_ops mvneta_eth_tool + .get_drvinfo = mvneta_ethtool_get_drvinfo, + .get_ringparam = mvneta_ethtool_get_ringparam, + .set_ringparam = mvneta_ethtool_set_ringparam, ++ .get_pauseparam = mvneta_ethtool_get_pauseparam, ++ .set_pauseparam = mvneta_ethtool_set_pauseparam, + .get_strings = mvneta_ethtool_get_strings, + .get_ethtool_stats = mvneta_ethtool_get_stats, + .get_sset_count = mvneta_ethtool_get_sset_count, diff --git a/target/linux/mvebu/patches-4.4/140-net-mvneta-enable-flow-control-for-PHY-connections.patch b/target/linux/mvebu/patches-4.4/140-net-mvneta-enable-flow-control-for-PHY-connections.patch new file mode 100644 index 0000000..e10574c --- /dev/null +++ b/target/linux/mvebu/patches-4.4/140-net-mvneta-enable-flow-control-for-PHY-connections.patch @@ -0,0 +1,32 @@ +From 62f8a12044265df11531750a240e516a5f1ff433 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 00:34:08 +0100 +Subject: [PATCH 728/744] net: mvneta: enable flow control for PHY connections + +Enable flow control support for PHY connections by indicating our +support via the ethtool capabilities. phylink takes care of the +appropriate handling. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/ethernet/marvell/mvneta.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3127,12 +3127,14 @@ static int mvneta_mac_support(struct net + state->supported = PHY_10BT_FEATURES | + PHY_100BT_FEATURES | + SUPPORTED_1000baseT_Full | ++ SUPPORTED_Pause | + SUPPORTED_Autoneg; + state->advertising = ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full | + ADVERTISED_1000baseT_Full | ++ ADVERTISED_Pause | + ADVERTISED_Autoneg; + state->an_enabled = 1; + break; diff --git a/target/linux/mvebu/patches-4.4/141-net-mvneta-enable-flow-control-for-fixed-connections.patch b/target/linux/mvebu/patches-4.4/141-net-mvneta-enable-flow-control-for-fixed-connections.patch new file mode 100644 index 0000000..16ffab3 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/141-net-mvneta-enable-flow-control-for-fixed-connections.patch @@ -0,0 +1,53 @@ +From 4c3e2dc08a11fb1273ca62467f1d06e59866bad3 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 12 Jul 2016 00:04:13 +0100 +Subject: [PATCH 729/744] net: mvneta: enable flow control for fixed + connections + +Allow symetric flow control to be enabled for fixed link connections as +well as other types of connections by setting the supported and +advertised capability bits. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/ethernet/marvell/mvneta.c | 11 +++++++---- + 1 file changed, 7 insertions(+), 4 deletions(-) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3114,9 +3114,9 @@ static int mvneta_mac_support(struct net + switch (mode) { + case MLO_AN_8023Z: + state->supported = SUPPORTED_1000baseT_Full | +- SUPPORTED_Autoneg | SUPPORTED_Pause; ++ SUPPORTED_Autoneg; + state->advertising = ADVERTISED_1000baseT_Full | +- ADVERTISED_Autoneg | ADVERTISED_Pause; ++ ADVERTISED_Autoneg; + state->an_enabled = 1; + break; + +@@ -3127,18 +3127,21 @@ static int mvneta_mac_support(struct net + state->supported = PHY_10BT_FEATURES | + PHY_100BT_FEATURES | + SUPPORTED_1000baseT_Full | +- SUPPORTED_Pause | + SUPPORTED_Autoneg; + state->advertising = ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full | + ADVERTISED_1000baseT_Full | +- ADVERTISED_Pause | + ADVERTISED_Autoneg; + state->an_enabled = 1; + break; + } ++ ++ /* All modes support flow control */ ++ state->supported |= SUPPORTED_Pause; ++ state->advertising |= ADVERTISED_Pause; ++ + return 0; + } + diff --git a/target/linux/mvebu/patches-4.4/142-phylink-add-EEE-support.patch b/target/linux/mvebu/patches-4.4/142-phylink-add-EEE-support.patch new file mode 100644 index 0000000..b06ec76 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/142-phylink-add-EEE-support.patch @@ -0,0 +1,111 @@ +From ffba226d73a2be262fff12d30aecf76d107b2ace Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 21:19:53 +0100 +Subject: [PATCH 730/744] phylink: add EEE support + +Add EEE hooks to phylink to allow the phylib EEE functions for the +connected phy to be safely accessed. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phylink.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++- + include/linux/phylink.h | 7 +++++- + 2 files changed, 63 insertions(+), 2 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -334,7 +334,8 @@ static void phylink_resolve(struct work_ + if (pl->phydev) + phylink_mac_config(pl, &link_state); + +- pl->ops->mac_link_up(ndev, pl->link_an_mode); ++ pl->ops->mac_link_up(ndev, pl->link_an_mode, ++ pl->phydev); + + netif_carrier_on(ndev); + +@@ -818,6 +819,61 @@ int phylink_ethtool_set_pauseparam(struc + } + EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam); + ++int phylink_init_eee(struct phylink *pl, bool clk_stop_enable) ++{ ++ int ret = -EPROTONOSUPPORT; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->phydev) ++ ret = phy_init_eee(pl->phydev, clk_stop_enable); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_init_eee); ++ ++int phylink_get_eee_err(struct phylink *pl) ++{ ++ int ret = 0; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->phydev) ++ ret = phy_get_eee_err(pl->phydev); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_get_eee_err); ++ ++int phylink_ethtool_get_eee(struct phylink *pl, struct ethtool_eee *eee) ++{ ++ int ret = -EOPNOTSUPP; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->phydev) ++ ret = phy_ethtool_get_eee(pl->phydev, eee); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_get_eee); ++ ++int phylink_ethtool_set_eee(struct phylink *pl, struct ethtool_eee *eee) ++{ ++ int ret = -EOPNOTSUPP; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->phydev) { ++ ret = phy_ethtool_set_eee(pl->phydev, eee); ++ if (ret == 0 && eee->eee_enabled) ++ phy_start_aneg(pl->phydev); ++ } ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_set_eee); ++ + /* This emulates MII registers for a fixed-mode phy operating as per the + * passed in state. "aneg" defines if we report negotiation is possible. + * +--- a/include/linux/phylink.h ++++ b/include/linux/phylink.h +@@ -51,7 +51,8 @@ struct phylink_mac_ops { + void (*mac_an_restart)(struct net_device *, unsigned int mode); + + void (*mac_link_down)(struct net_device *, unsigned int mode); +- void (*mac_link_up)(struct net_device *, unsigned int mode); ++ void (*mac_link_up)(struct net_device *, unsigned int mode, ++ struct phy_device *); + }; + + struct phylink *phylink_create(struct net_device *, struct device_node *, +@@ -74,6 +75,10 @@ void phylink_ethtool_get_pauseparam(stru + struct ethtool_pauseparam *); + int phylink_ethtool_set_pauseparam(struct phylink *, + struct ethtool_pauseparam *); ++int phylink_init_eee(struct phylink *, bool); ++int phylink_get_eee_err(struct phylink *); ++int phylink_ethtool_get_eee(struct phylink *, struct ethtool_eee *); ++int phylink_ethtool_set_eee(struct phylink *, struct ethtool_eee *); + int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); + + void phylink_set_link_port(struct phylink *pl, u32 support, u8 port); diff --git a/target/linux/mvebu/patches-4.4/143-net-mvneta-add-EEE-support.patch b/target/linux/mvebu/patches-4.4/143-net-mvneta-add-EEE-support.patch new file mode 100644 index 0000000..b904356 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/143-net-mvneta-add-EEE-support.patch @@ -0,0 +1,182 @@ +From b7dacf514e41d6efff0ccc170f660cc6dc2aeae2 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Tue, 29 Sep 2015 15:17:39 +0100 +Subject: [PATCH 731/744] net: mvneta: add EEE support + +Add EEE support to mvneta. This allows us to enable the low power idle +support at MAC level if there is a PHY attached through phylink which +supports LPI. The appropriate ethtool support is provided to allow the +feature to be controlled, including ethtool statistics for EEE wakeup +errors. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/ethernet/marvell/mvneta.c | 87 +++++++++++++++++++++++++++++++++++ + 1 file changed, 87 insertions(+) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -243,6 +243,12 @@ + #define MVNETA_TXQ_TOKEN_SIZE_REG(q) (0x3e40 + ((q) << 2)) + #define MVNETA_TXQ_TOKEN_SIZE_MAX 0x7fffffff + ++#define MVNETA_LPI_CTRL_0 0x2cc0 ++#define MVNETA_LPI_CTRL_1 0x2cc4 ++#define MVNETA_LPI_REQUEST_ENABLE BIT(0) ++#define MVNETA_LPI_CTRL_2 0x2cc8 ++#define MVNETA_LPI_STATUS 0x2ccc ++ + #define MVNETA_CAUSE_TXQ_SENT_DESC_ALL_MASK 0xff + + /* Descriptor ring Macros */ +@@ -316,6 +322,11 @@ + #define MVNETA_RX_GET_BM_POOL_ID(rxd) \ + (((rxd)->status & MVNETA_RXD_BM_POOL_MASK) >> MVNETA_RXD_BM_POOL_SHIFT) + ++enum { ++ ETHTOOL_STAT_EEE_WAKEUP, ++ ETHTOOL_MAX_STATS, ++}; ++ + struct mvneta_statistic { + unsigned short offset; + unsigned short type; +@@ -324,6 +335,7 @@ struct mvneta_statistic { + + #define T_REG_32 32 + #define T_REG_64 64 ++#define T_SW 1 + + static const struct mvneta_statistic mvneta_statistics[] = { + { 0x3000, T_REG_64, "good_octets_received", }, +@@ -358,6 +370,7 @@ static const struct mvneta_statistic mvn + { 0x304c, T_REG_32, "broadcast_frames_sent", }, + { 0x3054, T_REG_32, "fc_sent", }, + { 0x300c, T_REG_32, "internal_mac_transmit_err", }, ++ { ETHTOOL_STAT_EEE_WAKEUP, T_SW, "eee_wakeup_errors", }, + }; + + struct mvneta_pcpu_stats { +@@ -413,6 +426,10 @@ struct mvneta_port { + struct mvneta_bm_pool *pool_short; + int bm_win_id; + ++ bool eee_enabled; ++ bool eee_active; ++ bool tx_lpi_enabled; ++ + u64 ethtool_stats[ARRAY_SIZE(mvneta_statistics)]; + + u32 indir[MVNETA_RSS_LU_TABLE_SIZE]; +@@ -3276,6 +3293,18 @@ static void mvneta_mac_config(struct net + mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, new_an); + } + ++static void mvneta_set_eee(struct mvneta_port *pp, bool enable) ++{ ++ u32 lpi_ctl1; ++ ++ lpi_ctl1 = mvreg_read(pp, MVNETA_LPI_CTRL_1); ++ if (enable) ++ lpi_ctl1 |= MVNETA_LPI_REQUEST_ENABLE; ++ else ++ lpi_ctl1 &= ~MVNETA_LPI_REQUEST_ENABLE; ++ mvreg_write(pp, MVNETA_LPI_CTRL_1, lpi_ctl1); ++} ++ + static void mvneta_mac_link_down(struct net_device *ndev, unsigned int mode) + { + struct mvneta_port *pp = netdev_priv(ndev); +@@ -3289,6 +3318,9 @@ static void mvneta_mac_link_down(struct + val |= MVNETA_GMAC_FORCE_LINK_DOWN; + mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val); + } ++ ++ pp->eee_active = false; ++ mvneta_set_eee(pp, false); + } + + static void mvneta_mac_link_up(struct net_device *ndev, unsigned int mode, +@@ -3305,6 +3337,11 @@ static void mvneta_mac_link_up(struct ne + } + + mvneta_port_up(pp); ++ ++ if (phy && pp->eee_enabled) { ++ pp->eee_active = phy_init_eee(phy, 0) >= 0; ++ mvneta_set_eee(pp, pp->eee_active && pp->tx_lpi_enabled); ++ } + } + + static const struct phylink_mac_ops mvneta_phylink_ops = { +@@ -3744,6 +3781,13 @@ static void mvneta_ethtool_update_stats( + val64 = (u64)high << 32 | low; + pp->ethtool_stats[i] += val64; + break; ++ case T_SW: ++ switch (s->offset) { ++ case ETHTOOL_STAT_EEE_WAKEUP: ++ val = phylink_get_eee_err(pp->phylink); ++ break; ++ } ++ break; + } + } + } +@@ -3867,6 +3911,47 @@ static int mvneta_ethtool_get_rxfh(struc + return 0; + } + ++static int mvneta_ethtool_get_eee(struct net_device *dev, ++ struct ethtool_eee *eee) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ u32 lpi_ctl0; ++ ++ lpi_ctl0 = mvreg_read(pp, MVNETA_LPI_CTRL_0); ++ ++ eee->eee_enabled = pp->eee_enabled; ++ eee->eee_active = pp->eee_active; ++ eee->tx_lpi_enabled = pp->tx_lpi_enabled; ++ eee->tx_lpi_timer = (lpi_ctl0) >> 8; // * scale; ++ ++ return phylink_ethtool_get_eee(pp->phylink, eee); ++} ++ ++static int mvneta_ethtool_set_eee(struct net_device *dev, ++ struct ethtool_eee *eee) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ u32 lpi_ctl0; ++ ++ /* The Armada 37x documents do not give limits for this other than ++ * it being an 8-bit register. */ ++ if (eee->tx_lpi_enabled && ++ (eee->tx_lpi_timer < 0 || eee->tx_lpi_timer > 255)) ++ return -EINVAL; ++ ++ lpi_ctl0 = mvreg_read(pp, MVNETA_LPI_CTRL_0); ++ lpi_ctl0 &= ~(0xff << 8); ++ lpi_ctl0 |= eee->tx_lpi_timer << 8; ++ mvreg_write(pp, MVNETA_LPI_CTRL_0, lpi_ctl0); ++ ++ pp->eee_enabled = eee->eee_enabled; ++ pp->tx_lpi_enabled = eee->tx_lpi_enabled; ++ ++ mvneta_set_eee(pp, eee->tx_lpi_enabled && eee->eee_enabled); ++ ++ return phylink_ethtool_set_eee(pp->phylink, eee); ++} ++ + static const struct net_device_ops mvneta_netdev_ops = { + .ndo_open = mvneta_open, + .ndo_stop = mvneta_stop, +@@ -3898,6 +3983,8 @@ const struct ethtool_ops mvneta_eth_tool + .get_rxnfc = mvneta_ethtool_get_rxnfc, + .get_rxfh = mvneta_ethtool_get_rxfh, + .set_rxfh = mvneta_ethtool_set_rxfh, ++ .get_eee = mvneta_ethtool_get_eee, ++ .set_eee = mvneta_ethtool_set_eee, + }; + + /* Initialize hw */ diff --git a/target/linux/mvebu/patches-4.4/144-phylink-add-module-EEPROM-support.patch b/target/linux/mvebu/patches-4.4/144-phylink-add-module-EEPROM-support.patch new file mode 100644 index 0000000..f57f70d --- /dev/null +++ b/target/linux/mvebu/patches-4.4/144-phylink-add-module-EEPROM-support.patch @@ -0,0 +1,137 @@ +From 5419ccb638aa5c353ea88815e98953d9fc02e6ca Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 23:10:05 +0100 +Subject: [PATCH 732/744] phylink: add module EEPROM support + +Add support for reading module EEPROMs through phylink. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/phylink.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++ + include/linux/phylink.h | 12 +++++++++ + 2 files changed, 78 insertions(+) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -60,6 +60,9 @@ struct phylink { + struct work_struct resolve; + + bool mac_link_up; ++ ++ const struct phylink_module_ops *module_ops; ++ void *module_data; + }; + + static const char *phylink_an_mode_str(unsigned int mode) +@@ -819,6 +822,36 @@ int phylink_ethtool_set_pauseparam(struc + } + EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam); + ++int phylink_ethtool_get_module_info(struct phylink *pl, ++ struct ethtool_modinfo *modinfo) ++{ ++ int ret = -EOPNOTSUPP; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->module_ops) ++ ret = pl->module_ops->get_module_info(pl->module_data, ++ modinfo); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_get_module_info); ++ ++int phylink_ethtool_get_module_eeprom(struct phylink *pl, ++ struct ethtool_eeprom *ee, u8 *buf) ++{ ++ int ret = -EOPNOTSUPP; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->module_ops) ++ ret = pl->module_ops->get_module_eeprom(pl->module_data, ee, ++ buf); ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_ethtool_get_module_eeprom); ++ + int phylink_init_eee(struct phylink *pl, bool clk_stop_enable) + { + int ret = -EPROTONOSUPPORT; +@@ -1016,6 +1049,39 @@ EXPORT_SYMBOL_GPL(phylink_mii_ioctl); + + + ++int phylink_register_module(struct phylink *pl, void *data, ++ const struct phylink_module_ops *ops) ++{ ++ int ret = -EBUSY; ++ ++ mutex_lock(&pl->config_mutex); ++ if (!pl->module_ops) { ++ pl->module_ops = ops; ++ pl->module_data = data; ++ ret = 0; ++ } ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_register_module); ++ ++int phylink_unregister_module(struct phylink *pl, void *data) ++{ ++ int ret = -EINVAL; ++ ++ mutex_lock(&pl->config_mutex); ++ if (pl->module_data == data) { ++ pl->module_ops = NULL; ++ pl->module_data = NULL; ++ ret = 0; ++ } ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_unregister_module); ++ + void phylink_disable(struct phylink *pl) + { + set_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); +--- a/include/linux/phylink.h ++++ b/include/linux/phylink.h +@@ -55,6 +55,11 @@ struct phylink_mac_ops { + struct phy_device *); + }; + ++struct phylink_module_ops { ++ int (*get_module_info)(void *, struct ethtool_modinfo *); ++ int (*get_module_eeprom)(void *, struct ethtool_eeprom *, u8 *); ++}; ++ + struct phylink *phylink_create(struct net_device *, struct device_node *, + phy_interface_t iface, const struct phylink_mac_ops *ops); + void phylink_destroy(struct phylink *); +@@ -75,12 +80,19 @@ void phylink_ethtool_get_pauseparam(stru + struct ethtool_pauseparam *); + int phylink_ethtool_set_pauseparam(struct phylink *, + struct ethtool_pauseparam *); ++int phylink_ethtool_get_module_info(struct phylink *, struct ethtool_modinfo *); ++int phylink_ethtool_get_module_eeprom(struct phylink *, ++ struct ethtool_eeprom *, u8 *); + int phylink_init_eee(struct phylink *, bool); + int phylink_get_eee_err(struct phylink *); + int phylink_ethtool_get_eee(struct phylink *, struct ethtool_eee *); + int phylink_ethtool_set_eee(struct phylink *, struct ethtool_eee *); + int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); + ++int phylink_register_module(struct phylink *, void *, ++ const struct phylink_module_ops *); ++int phylink_unregister_module(struct phylink *, void *); ++ + void phylink_set_link_port(struct phylink *pl, u32 support, u8 port); + int phylink_set_link_an_mode(struct phylink *pl, unsigned int mode); + void phylink_disable(struct phylink *pl); diff --git a/target/linux/mvebu/patches-4.4/145-net-mvneta-add-module-EEPROM-reading-support.patch b/target/linux/mvebu/patches-4.4/145-net-mvneta-add-module-EEPROM-reading-support.patch new file mode 100644 index 0000000..b3f9039 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/145-net-mvneta-add-module-EEPROM-reading-support.patch @@ -0,0 +1,44 @@ +From 665e1fe77dedcfc6b5669214ebfd252c803290d4 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 1 Oct 2015 23:32:39 +0100 +Subject: [PATCH 733/744] net: mvneta: add module EEPROM reading support + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/ethernet/marvell/mvneta.c | 18 ++++++++++++++++++ + 1 file changed, 18 insertions(+) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3911,6 +3911,22 @@ static int mvneta_ethtool_get_rxfh(struc + return 0; + } + ++static int mvneta_ethtool_get_module_info(struct net_device *dev, ++ struct ethtool_modinfo *modinfo) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ ++ return phylink_ethtool_get_module_info(pp->phylink, modinfo); ++} ++ ++static int mvneta_ethtool_get_module_eeprom(struct net_device *dev, ++ struct ethtool_eeprom *ee, u8 *buf) ++{ ++ struct mvneta_port *pp = netdev_priv(dev); ++ ++ return phylink_ethtool_get_module_eeprom(pp->phylink, ee, buf); ++} ++ + static int mvneta_ethtool_get_eee(struct net_device *dev, + struct ethtool_eee *eee) + { +@@ -3983,6 +3999,8 @@ const struct ethtool_ops mvneta_eth_tool + .get_rxnfc = mvneta_ethtool_get_rxnfc, + .get_rxfh = mvneta_ethtool_get_rxfh, + .set_rxfh = mvneta_ethtool_set_rxfh, ++ .get_module_info = mvneta_ethtool_get_module_info, ++ .get_module_eeprom = mvneta_ethtool_get_module_eeprom, + .get_eee = mvneta_ethtool_get_eee, + .set_eee = mvneta_ethtool_set_eee, + }; diff --git a/target/linux/mvebu/patches-4.4/146-sfp-phylink-hook-up-eeprom-functions.patch b/target/linux/mvebu/patches-4.4/146-sfp-phylink-hook-up-eeprom-functions.patch new file mode 100644 index 0000000..f37e652 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/146-sfp-phylink-hook-up-eeprom-functions.patch @@ -0,0 +1,68 @@ +From a7091ef24223ed39b39c6b73b77c55c8a607f34a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 8 Oct 2015 23:49:47 +0100 +Subject: [PATCH 734/744] sfp/phylink: hook up eeprom functions + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + drivers/net/phy/sfp.c | 19 +++++++++++-------- + 1 file changed, 11 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -901,11 +901,9 @@ static void sfp_sm_event(struct sfp *sfp + mutex_unlock(&sfp->sm_mutex); + } + +-#if 0 +-static int sfp_phy_module_info(struct phy_device *phy, +- struct ethtool_modinfo *modinfo) ++static int sfp_module_info(void *priv, struct ethtool_modinfo *modinfo) + { +- struct sfp *sfp = phy->priv; ++ struct sfp *sfp = priv; + + /* locking... and check module is present */ + +@@ -919,10 +917,9 @@ static int sfp_phy_module_info(struct ph + return 0; + } + +-static int sfp_phy_module_eeprom(struct phy_device *phy, +- struct ethtool_eeprom *ee, u8 *data) ++static int sfp_module_eeprom(void *priv, struct ethtool_eeprom *ee, u8 *data) + { +- struct sfp *sfp = phy->priv; ++ struct sfp *sfp = priv; + unsigned int first, last, len; + int ret; + +@@ -953,7 +950,11 @@ static int sfp_phy_module_eeprom(struct + } + return 0; + } +-#endif ++ ++static const struct phylink_module_ops sfp_module_ops = { ++ .get_module_info = sfp_module_info, ++ .get_module_eeprom = sfp_module_eeprom, ++}; + + static void sfp_timeout(struct work_struct *work) + { +@@ -1029,6 +1030,7 @@ static int sfp_netdev_notify(struct noti + case NETDEV_UNREGISTER: + if (sfp->mod_phy && sfp->phylink) + phylink_disconnect_phy(sfp->phylink); ++ phylink_unregister_module(sfp->phylink, sfp); + sfp->phylink = NULL; + dev_put(sfp->ndev); + sfp->ndev = NULL; +@@ -1145,6 +1147,7 @@ static int sfp_probe(struct platform_dev + } + + phylink_disable(sfp->phylink); ++ phylink_register_module(sfp->phylink, sfp, &sfp_module_ops); + } + + sfp->state = sfp_get_state(sfp); diff --git a/target/linux/mvebu/patches-4.4/210-ARM-dts-armada388-clearfog-add-SFP-module-support.patch b/target/linux/mvebu/patches-4.4/210-ARM-dts-armada388-clearfog-add-SFP-module-support.patch new file mode 100644 index 0000000..9efcff9 --- /dev/null +++ b/target/linux/mvebu/patches-4.4/210-ARM-dts-armada388-clearfog-add-SFP-module-support.patch @@ -0,0 +1,84 @@ +From 63ff73593c2f5d3fc1cba479321d192caaca48aa Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Sat, 12 Sep 2015 18:43:39 +0100 +Subject: [PATCH 738/744] ARM: dts: armada388-clearfog: add SFP module support + +Add SFP module support for Clearfog using the SFP phylink support. + +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> +--- + arch/arm/boot/dts/armada-388-clearfog.dts | 44 ++++++++----------------------- + 1 file changed, 11 insertions(+), 33 deletions(-) + +--- a/arch/arm/boot/dts/armada-388-clearfog.dts ++++ b/arch/arm/boot/dts/armada-388-clearfog.dts +@@ -90,16 +90,12 @@ + }; + + ethernet@34000 { ++ managed = "in-band-status"; + phy-mode = "sgmii"; + buffer-manager = <&bm>; + bm,pool-long = <3>; + bm,pool-short = <1>; + status = "okay"; +- +- fixed-link { +- speed = <1000>; +- full-duplex; +- }; + }; + + i2c@11000 { +@@ -183,34 +179,6 @@ + output-low; + line-name = "m.2 devslp"; + }; +- sfp_los { +- /* SFP loss of signal */ +- gpio-hog; +- gpios = <12 GPIO_ACTIVE_HIGH>; +- input; +- line-name = "sfp-los"; +- }; +- sfp_tx_fault { +- /* SFP laser fault */ +- gpio-hog; +- gpios = <13 GPIO_ACTIVE_HIGH>; +- input; +- line-name = "sfp-tx-fault"; +- }; +- sfp_tx_disable { +- /* SFP transmit disable */ +- gpio-hog; +- gpios = <14 GPIO_ACTIVE_HIGH>; +- output-low; +- line-name = "sfp-tx-disable"; +- }; +- sfp_mod_def0 { +- /* SFP module present */ +- gpio-hog; +- gpios = <15 GPIO_ACTIVE_LOW>; +- input; +- line-name = "sfp-mod-def0"; +- }; + }; + + /* The MCP3021 is 100kHz clock only */ +@@ -374,6 +342,16 @@ + }; + }; + ++ sfp: sfp { ++ compatible = "sff,sfp"; ++ i2c-bus = <&i2c1>; ++ los-gpio = <&expander0 12 GPIO_ACTIVE_HIGH>; ++ moddef0-gpio = <&expander0 15 GPIO_ACTIVE_LOW>; ++ sfp,ethernet = <ð2>; ++ tx-disable-gpio = <&expander0 14 GPIO_ACTIVE_HIGH>; ++ tx-fault-gpio = <&expander0 13 GPIO_ACTIVE_HIGH>; ++ }; ++ + dsa@0 { + compatible = "marvell,dsa"; + dsa,ethernet = <ð1>; diff --git a/target/linux/mvebu/patches-4.4/300-reprobe_sfp_phy.patch b/target/linux/mvebu/patches-4.4/300-reprobe_sfp_phy.patch new file mode 100644 index 0000000..42614ef --- /dev/null +++ b/target/linux/mvebu/patches-4.4/300-reprobe_sfp_phy.patch @@ -0,0 +1,96 @@ +From 28baa5e2635285b178326b301f534ed95c65dd01 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Thu, 29 Sep 2016 11:44:39 +0200 +Subject: [PATCH] sfp: retry phy probe if unsuccessful + +Some phys seem to take longer than 50 ms to come out of reset, so retry +until we find a phy. + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +--- + drivers/net/phy/sfp.c | 38 +++++++++++++++++++++++++------------- + 1 file changed, 25 insertions(+), 13 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -488,7 +488,7 @@ static void sfp_sm_phy_detach(struct sfp + sfp->mod_phy = NULL; + } + +-static void sfp_sm_probe_phy(struct sfp *sfp) ++static int sfp_sm_probe_phy(struct sfp *sfp) + { + struct phy_device *phy; + int err; +@@ -498,11 +498,11 @@ static void sfp_sm_probe_phy(struct sfp + phy = mdiobus_scan(sfp->i2c_mii, SFP_PHY_ADDR); + if (IS_ERR(phy)) { + dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy)); +- return; ++ return PTR_ERR(phy); + } + if (!phy) { +- dev_info(sfp->dev, "no PHY detected\n"); +- return; ++ dev_dbg(sfp->dev, "no PHY detected\n"); ++ return -EAGAIN; + } + + err = phylink_connect_phy(sfp->phylink, phy); +@@ -510,11 +510,13 @@ static void sfp_sm_probe_phy(struct sfp + phy_device_remove(phy); + phy_device_free(phy); + dev_err(sfp->dev, "phylink_connect_phy failed: %d\n", err); +- return; ++ return err; + } + + sfp->mod_phy = phy; + phy_start(phy); ++ ++ return 0; + } + + static void sfp_sm_link_up(struct sfp *sfp) +@@ -565,13 +567,6 @@ static void sfp_sm_mod_init(struct 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; +- + if (sfp->phylink) { + /* Setting the serdes link mode is guesswork: there's no + * field in the EEPROM which indicates what mode should +@@ -587,9 +582,26 @@ static void sfp_sm_mod_init(struct sfp * + !sfp->id.base.e100_base_fx) { + phylink_set_link_an_mode(sfp->phylink, MLO_AN_8023Z); + } else { ++ int ret; ++ + phylink_set_link_an_mode(sfp->phylink, MLO_AN_SGMII); +- sfp_sm_probe_phy(sfp); ++ ++ ret = sfp_sm_probe_phy(sfp); ++ if (ret) { ++ if (ret == -EAGAIN) ++ sfp_sm_set_timer(sfp, T_PROBE_RETRY); ++ else ++ sfp_sm_next(sfp, SFP_S_TX_DISABLE, 0); ++ return; ++ } + } ++ ++ /* 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; + } + } + |