CONFIG_MANGLE_BOOTARGS=y
CONFIG_MARVELL_PHY=y
CONFIG_MDIO_BOARDINFO=y
+CONFIG_MDIO_I2C=y
CONFIG_MEMORY=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PHYLIB=y
+CONFIG_PHYLINK=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_ARMADA_370=y
CONFIG_PINCTRL_ARMADA_38X=y
CONFIG_SENSORS_TMP421=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_8250_FSL=y
+CONFIG_SFP=y
CONFIG_SMP=y
CONFIG_SMP_ON_UP=y
CONFIG_SOC_BUS=y
CONFIG_SRCU=y
CONFIG_SWCONFIG=y
CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
CONFIG_SWP_EMULATE=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_THERMAL=y
--- /dev/null
+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
--- /dev/null
+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;
--- /dev/null
+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
--- /dev/null
+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
--- /dev/null
+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;
--- /dev/null
+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)
--- /dev/null
+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,
--- /dev/null
+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
--- /dev/null
+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);
--- /dev/null
+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
--- /dev/null
+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
--- /dev/null
+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
--- /dev/null
+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
--- /dev/null
+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 ||
--- /dev/null
+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) {
--- /dev/null
+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 */
--- /dev/null
+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);
--- /dev/null
+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,
--- /dev/null
+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);
--- /dev/null
+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,
--- /dev/null
+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;
--- /dev/null
+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;
+ }
+
--- /dev/null
+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);
--- /dev/null
+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 */
--- /dev/null
+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);
--- /dev/null
+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,
+ };
--- /dev/null
+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);
--- /dev/null
+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>;
--- /dev/null
+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;
+ }
+ }
+
projects / openwrt / staging / blogic.git / commitdiff