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openwrt/target/linux/layerscape/patches-4.14/709-mdio-phy-support-layers...

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From c24cbb648c5bde8312dbd5498a4b8c12b2692205 Mon Sep 17 00:00:00 2001
From: Biwen Li <biwen.li@nxp.com>
Date: Wed, 17 Apr 2019 18:58:45 +0800
Subject: [PATCH] mdio-phy: support layerscape
This is an integrated patch of mdio-phy for layerscape
Signed-off-by: Bhaskar Upadhaya <Bhaskar.Upadhaya@nxp.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Constantin Tudor <constantin.tudor@nxp.com>
Signed-off-by: costi <constantin.tudor@freescale.com>
Signed-off-by: Florin Chiculita <florinlaurentiu.chiculita@nxp.com>
Signed-off-by: Florinel Iordache <florinel.iordache@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Valentin Catalin Neacsu <valentin-catalin.neacsu@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
drivers/net/phy/Kconfig | 33 +
drivers/net/phy/Makefile | 5 +
drivers/net/phy/aquantia.c | 286 ++++-
drivers/net/phy/at803x.c | 21 +
drivers/net/phy/fsl_backplane.c | 1780 ++++++++++++++++++++++++++++
drivers/net/phy/fsl_backplane.h | 41 +
drivers/net/phy/fsl_backplane_serdes_10g.c | 281 +++++
drivers/net/phy/fsl_backplane_serdes_28g.c | 336 ++++++
drivers/net/phy/inphi.c | 594 ++++++++++
drivers/net/phy/mdio-mux-multiplexer.c | 122 ++
drivers/net/phy/swphy.c | 1 +
include/linux/phy.h | 3 +
12 files changed, 3484 insertions(+), 19 deletions(-)
create mode 100644 drivers/net/phy/fsl_backplane.c
create mode 100644 drivers/net/phy/fsl_backplane.h
create mode 100644 drivers/net/phy/fsl_backplane_serdes_10g.c
create mode 100644 drivers/net/phy/fsl_backplane_serdes_28g.c
create mode 100644 drivers/net/phy/inphi.c
create mode 100644 drivers/net/phy/mdio-mux-multiplexer.c
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -87,9 +87,27 @@ config MDIO_BUS_MUX_MMIOREG
Currently, only 8/16/32 bits registers are supported.
+config MDIO_BUS_MUX_MULTIPLEXER
+ tristate "MDIO bus multiplexer using kernel multiplexer subsystem"
+ depends on OF
+ select MULTIPLEXER
+ select MDIO_BUS_MUX
+ help
+ This module provides a driver for MDIO bus multiplexer
+ that is controlled via the kernel multiplexer subsystem. The
+ bus multiplexer connects one of several child MDIO busses to
+ a parent bus. Child bus selection is under the control of
+ the kernel multiplexer subsystem.
+
config MDIO_CAVIUM
tristate
+config MDIO_FSL_BACKPLANE
+ tristate "Support for backplane on Freescale XFI interface"
+ depends on OF_MDIO
+ help
+ This module provides a driver for Freescale XFI's backplane.
+
config MDIO_GPIO
tristate "GPIO lib-based bitbanged MDIO buses"
depends on MDIO_BITBANG && GPIOLIB
@@ -303,6 +321,16 @@ config AT803X_PHY
---help---
Currently supports the AT8030 and AT8035 model
+config AT803X_PHY_SMART_EEE
+ depends on AT803X_PHY
+ default n
+ tristate "SmartEEE feature for AT803X PHYs"
+ ---help---
+ Enables the Atheros SmartEEE feature (not IEEE 802.3az). When 2 PHYs
+ which support this feature are connected back-to-back, they may
+ negotiate a low-power sleep mode autonomously, without the Ethernet
+ controller's knowledge. May cause packet loss.
+
config BCM63XX_PHY
tristate "Broadcom 63xx SOCs internal PHY"
depends on BCM63XX
@@ -385,6 +413,11 @@ config ICPLUS_PHY
---help---
Currently supports the IP175C and IP1001 PHYs.
+config INPHI_PHY
+ tristate "Inphi CDR 10G/25G Ethernet PHY"
+ ---help---
+ Currently supports the IN112525_S03 part @ 25G
+
config INTEL_XWAY_PHY
tristate "Intel XWAY PHYs"
---help---
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -44,7 +44,11 @@ obj-$(CONFIG_MDIO_BUS_MUX) += mdio-mux.o
obj-$(CONFIG_MDIO_BUS_MUX_BCM_IPROC) += mdio-mux-bcm-iproc.o
obj-$(CONFIG_MDIO_BUS_MUX_GPIO) += mdio-mux-gpio.o
obj-$(CONFIG_MDIO_BUS_MUX_MMIOREG) += mdio-mux-mmioreg.o
+obj-$(CONFIG_MDIO_BUS_MUX_MULTIPLEXER) += mdio-mux-multiplexer.o
obj-$(CONFIG_MDIO_CAVIUM) += mdio-cavium.o
+obj-$(CONFIG_MDIO_FSL_BACKPLANE) += fsl_backplane.o
+obj-$(CONFIG_MDIO_FSL_BACKPLANE) += fsl_backplane_serdes_10g.o
+obj-$(CONFIG_MDIO_FSL_BACKPLANE) += fsl_backplane_serdes_28g.o
obj-$(CONFIG_MDIO_GPIO) += mdio-gpio.o
obj-$(CONFIG_MDIO_HISI_FEMAC) += mdio-hisi-femac.o
obj-$(CONFIG_MDIO_I2C) += mdio-i2c.o
@@ -75,6 +79,7 @@ obj-$(CONFIG_DP83848_PHY) += dp83848.o
obj-$(CONFIG_DP83867_PHY) += dp83867.o
obj-$(CONFIG_FIXED_PHY) += fixed_phy.o
obj-$(CONFIG_ICPLUS_PHY) += icplus.o
+obj-$(CONFIG_INPHI_PHY) += inphi.o
obj-$(CONFIG_INTEL_XWAY_PHY) += intel-xway.o
obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
obj-$(CONFIG_LXT_PHY) += lxt.o
--- a/drivers/net/phy/aquantia.c
+++ b/drivers/net/phy/aquantia.c
@@ -4,6 +4,7 @@
* Author: Shaohui Xie <Shaohui.Xie@freescale.com>
*
* Copyright 2015 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
@@ -27,15 +28,174 @@
#define PHY_AQUANTIA_FEATURES (SUPPORTED_10000baseT_Full | \
SUPPORTED_1000baseT_Full | \
+ SUPPORTED_2500baseX_Full | \
SUPPORTED_100baseT_Full | \
PHY_DEFAULT_FEATURES)
+#define MDIO_PMA_CTRL1_AQ_SPEED10 0
+#define MDIO_PMA_CTRL1_AQ_SPEED2500 0x2058
+#define MDIO_PMA_CTRL1_AQ_SPEED5000 0x205c
+#define MDIO_PMA_CTRL2_AQ_2500BT 0x30
+#define MDIO_PMA_CTRL2_AQ_5000BT 0x31
+#define MDIO_PMA_CTRL2_AQ_TYPE_MASK 0x3F
+
+#define MDIO_AN_VENDOR_PROV_CTRL 0xc400
+#define MDIO_AN_RECV_LP_STATUS 0xe820
+
+static int aquantia_write_reg(struct phy_device *phydev, int devad,
+ u32 regnum, u16 val)
+{
+ u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
+
+ return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, addr, val);
+}
+
+static int aquantia_read_reg(struct phy_device *phydev, int devad, u32 regnum)
+{
+ u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
+
+ return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, addr);
+}
+
+static int aquantia_pma_setup_forced(struct phy_device *phydev)
+{
+ int ctrl1, ctrl2, ret;
+
+ /* Half duplex is not supported */
+ if (phydev->duplex != DUPLEX_FULL)
+ return -EINVAL;
+
+ ctrl1 = aquantia_read_reg(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1);
+ if (ctrl1 < 0)
+ return ctrl1;
+
+ ctrl2 = aquantia_read_reg(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL2);
+ if (ctrl2 < 0)
+ return ctrl2;
+
+ ctrl1 &= ~MDIO_CTRL1_SPEEDSEL;
+ ctrl2 &= ~(MDIO_PMA_CTRL2_AQ_TYPE_MASK);
+
+ switch (phydev->speed) {
+ case SPEED_10:
+ ctrl2 |= MDIO_PMA_CTRL2_10BT;
+ break;
+ case SPEED_100:
+ ctrl1 |= MDIO_PMA_CTRL1_SPEED100;
+ ctrl2 |= MDIO_PMA_CTRL2_100BTX;
+ break;
+ case SPEED_1000:
+ ctrl1 |= MDIO_PMA_CTRL1_SPEED1000;
+ /* Assume 1000base-T */
+ ctrl2 |= MDIO_PMA_CTRL2_1000BT;
+ break;
+ case SPEED_10000:
+ ctrl1 |= MDIO_CTRL1_SPEED10G;
+ /* Assume 10Gbase-T */
+ ctrl2 |= MDIO_PMA_CTRL2_10GBT;
+ break;
+ case SPEED_2500:
+ ctrl1 |= MDIO_PMA_CTRL1_AQ_SPEED2500;
+ ctrl2 |= MDIO_PMA_CTRL2_AQ_2500BT;
+ break;
+ case SPEED_5000:
+ ctrl1 |= MDIO_PMA_CTRL1_AQ_SPEED5000;
+ ctrl2 |= MDIO_PMA_CTRL2_AQ_5000BT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = aquantia_write_reg(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1, ctrl1);
+ if (ret < 0)
+ return ret;
+
+ return aquantia_write_reg(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL2, ctrl2);
+}
+
+static int aquantia_aneg(struct phy_device *phydev, bool control)
+{
+ int reg = aquantia_read_reg(phydev, MDIO_MMD_AN, MDIO_CTRL1);
+
+ if (reg < 0)
+ return reg;
+
+ if (control)
+ reg |= MDIO_AN_CTRL1_ENABLE | MDIO_AN_CTRL1_RESTART;
+ else
+ reg &= ~(MDIO_AN_CTRL1_ENABLE | MDIO_AN_CTRL1_RESTART);
+
+ return aquantia_write_reg(phydev, MDIO_MMD_AN, MDIO_CTRL1, reg);
+}
+
+static int aquantia_config_advert(struct phy_device *phydev)
+{
+ u32 advertise;
+ int oldadv, adv, oldadv1, adv1;
+ int err, changed = 0;
+
+ /* Only allow advertising what this PHY supports */
+ phydev->advertising &= phydev->supported;
+ advertise = phydev->advertising;
+
+ /* Setup standard advertisement */
+ oldadv = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_10GBT_CTRL);
+ if (oldadv < 0)
+ return oldadv;
+
+ /* Aquantia vendor specific advertisments */
+ oldadv1 = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_VENDOR_PROV_CTRL);
+ if (oldadv1 < 0)
+ return oldadv1;
+
+ adv = 0;
+ adv1 = 0;
+
+ /*100BaseT_full is supported by default*/
+
+ if (advertise & ADVERTISED_1000baseT_Full)
+ adv1 |= 0x8000;
+ if (advertise & ADVERTISED_10000baseT_Full)
+ adv |= 0x1000;
+ if (advertise & ADVERTISED_2500baseX_Full)
+ adv1 |= 0x400;
+
+ if (adv != oldadv) {
+ err = aquantia_write_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_10GBT_CTRL, adv);
+ if (err < 0)
+ return err;
+ changed = 1;
+ }
+ if (adv1 != oldadv1) {
+ err = aquantia_write_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_VENDOR_PROV_CTRL, adv1);
+ if (err < 0)
+ return err;
+ changed = 1;
+ }
+
+ return changed;
+}
+
static int aquantia_config_aneg(struct phy_device *phydev)
{
+ int ret = 0;
+
phydev->supported = PHY_AQUANTIA_FEATURES;
- phydev->advertising = phydev->supported;
+ if (phydev->autoneg == AUTONEG_DISABLE) {
+ aquantia_pma_setup_forced(phydev);
+ return aquantia_aneg(phydev, false);
+ }
- return 0;
+ ret = aquantia_config_advert(phydev);
+ if (ret > 0)
+ /* restart autoneg */
+ return aquantia_aneg(phydev, true);
+
+ return ret;
}
static int aquantia_aneg_done(struct phy_device *phydev)
@@ -51,25 +211,26 @@ static int aquantia_config_intr(struct p
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
- err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 1);
+ err = aquantia_write_reg(phydev, MDIO_MMD_AN, 0xd401, 1);
if (err < 0)
return err;
- err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 1);
+ err = aquantia_write_reg(phydev, MDIO_MMD_VEND1, 0xff00, 1);
if (err < 0)
return err;
- err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0x1001);
+ err = aquantia_write_reg(phydev, MDIO_MMD_VEND1,
+ 0xff01, 0x1001);
} else {
- err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 0);
+ err = aquantia_write_reg(phydev, MDIO_MMD_AN, 0xd401, 0);
if (err < 0)
return err;
- err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 0);
+ err = aquantia_write_reg(phydev, MDIO_MMD_VEND1, 0xff00, 0);
if (err < 0)
return err;
- err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0);
+ err = aquantia_write_reg(phydev, MDIO_MMD_VEND1, 0xff01, 0);
}
return err;
@@ -79,42 +240,129 @@ static int aquantia_ack_interrupt(struct
{
int reg;
- reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xcc01);
+ reg = aquantia_read_reg(phydev, MDIO_MMD_AN, 0xcc01);
return (reg < 0) ? reg : 0;
}
+static int aquantia_read_advert(struct phy_device *phydev)
+{
+ int adv, adv1;
+
+ /* Setup standard advertisement */
+ adv = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_10GBT_CTRL);
+
+ /* Aquantia vendor specific advertisments */
+ adv1 = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_VENDOR_PROV_CTRL);
+
+ /*100BaseT_full is supported by default*/
+ phydev->advertising |= ADVERTISED_100baseT_Full;
+
+ if (adv & 0x1000)
+ phydev->advertising |= ADVERTISED_10000baseT_Full;
+ else
+ phydev->advertising &= ~ADVERTISED_10000baseT_Full;
+ if (adv1 & 0x8000)
+ phydev->advertising |= ADVERTISED_1000baseT_Full;
+ else
+ phydev->advertising &= ~ADVERTISED_1000baseT_Full;
+ if (adv1 & 0x400)
+ phydev->advertising |= ADVERTISED_2500baseX_Full;
+ else
+ phydev->advertising &= ~ADVERTISED_2500baseX_Full;
+ return 0;
+}
+
+static int aquantia_read_lp_advert(struct phy_device *phydev)
+{
+ int adv, adv1;
+
+ /* Read standard link partner advertisement */
+ adv = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_STAT1);
+
+ if (adv & 0x1)
+ phydev->lp_advertising |= ADVERTISED_Autoneg |
+ ADVERTISED_100baseT_Full;
+ else
+ phydev->lp_advertising &= ~(ADVERTISED_Autoneg |
+ ADVERTISED_100baseT_Full);
+
+ /* Read standard link partner advertisement */
+ adv = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_10GBT_STAT);
+
+ /* Aquantia link partner advertisments */
+ adv1 = aquantia_read_reg(phydev, MDIO_MMD_AN,
+ MDIO_AN_RECV_LP_STATUS);
+
+ if (adv & 0x800)
+ phydev->lp_advertising |= ADVERTISED_10000baseT_Full;
+ else
+ phydev->lp_advertising &= ~ADVERTISED_10000baseT_Full;
+ if (adv1 & 0x8000)
+ phydev->lp_advertising |= ADVERTISED_1000baseT_Full;
+ else
+ phydev->lp_advertising &= ~ADVERTISED_1000baseT_Full;
+ if (adv1 & 0x400)
+ phydev->lp_advertising |= ADVERTISED_2500baseX_Full;
+ else
+ phydev->lp_advertising &= ~ADVERTISED_2500baseX_Full;
+
+ return 0;
+}
+
static int aquantia_read_status(struct phy_device *phydev)
{
int reg;
- reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
- reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
+ /* Read the link status twice; the bit is latching low */
+ reg = aquantia_read_reg(phydev, MDIO_MMD_AN, MDIO_STAT1);
+ reg = aquantia_read_reg(phydev, MDIO_MMD_AN, MDIO_STAT1);
+
if (reg & MDIO_STAT1_LSTATUS)
phydev->link = 1;
else
phydev->link = 0;
- reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
mdelay(10);
- reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
+ reg = aquantia_read_reg(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1);
+
+ if ((reg & MDIO_CTRL1_SPEEDSELEXT) == MDIO_CTRL1_SPEEDSELEXT)
+ reg &= MDIO_CTRL1_SPEEDSEL;
+ else
+ reg &= MDIO_CTRL1_SPEEDSELEXT;
switch (reg) {
- case 0x9:
+ case MDIO_PMA_CTRL1_AQ_SPEED5000:
+ phydev->speed = SPEED_5000;
+ break;
+ case MDIO_PMA_CTRL1_AQ_SPEED2500:
phydev->speed = SPEED_2500;
break;
- case 0x5:
- phydev->speed = SPEED_1000;
+ case MDIO_PMA_CTRL1_AQ_SPEED10:
+ phydev->speed = SPEED_10;
break;
- case 0x3:
+ case MDIO_PMA_CTRL1_SPEED100:
phydev->speed = SPEED_100;
break;
- case 0x7:
- default:
+ case MDIO_PMA_CTRL1_SPEED1000:
+ phydev->speed = SPEED_1000;
+ break;
+ case MDIO_CTRL1_SPEED10G:
phydev->speed = SPEED_10000;
break;
+ default:
+ phydev->speed = SPEED_UNKNOWN;
+ break;
}
+
phydev->duplex = DUPLEX_FULL;
+ aquantia_read_advert(phydev);
+ aquantia_read_lp_advert(phydev);
+
return 0;
}
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -68,6 +68,8 @@
#define AT803X_DEBUG_REG_5 0x05
#define AT803X_DEBUG_TX_CLK_DLY_EN BIT(8)
+#define AT803X_LPI_EN BIT(8)
+
#define ATH8030_PHY_ID 0x004dd076
#define ATH8031_PHY_ID 0x004dd074
#define ATH8032_PHY_ID 0x004dd023
@@ -290,6 +292,19 @@ static void at803x_disable_smarteee(stru
phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
}
+static void at803x_enable_smart_eee(struct phy_device *phydev, int on)
+{
+ int value;
+
+ /* 5.1.11 Smart_eee control3 */
+ value = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x805D);
+ if (on)
+ value |= AT803X_LPI_EN;
+ else
+ value &= ~AT803X_LPI_EN;
+ phy_write_mmd(phydev, MDIO_MMD_PCS, 0x805D, value);
+}
+
static int at803x_config_init(struct phy_device *phydev)
{
struct at803x_platform_data *pdata;
@@ -320,6 +335,12 @@ static int at803x_config_init(struct phy
if (ret < 0)
return ret;
+#ifdef CONFIG_AT803X_PHY_SMART_EEE
+ at803x_enable_smart_eee(phydev, 1);
+#else
+ at803x_enable_smart_eee(phydev, 0);
+#endif
+
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
ret = at803x_enable_rx_delay(phydev);
--- /dev/null
+++ b/drivers/net/phy/fsl_backplane.c
@@ -0,0 +1,1780 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DPAA backplane driver.
+ * Author: Shaohui Xie <Shaohui.Xie@freescale.com>
+ * Florinel Iordache <florinel.iordache@nxp.com>
+ *
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/mdio.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_net.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/netdevice.h>
+
+#include "fsl_backplane.h"
+
+
+/* PCS Device Identifier */
+#define PCS_PHY_DEVICE_ID 0x0083e400
+#define PCS_PHY_DEVICE_ID_MASK 0xffffffff
+
+/* 10G Long cables setup: 1 m to 2 m cables */
+#define RATIO_PREQ_10G 0x3
+#define RATIO_PST1Q_10G 0xd
+#define RATIO_EQ_10G 0x20
+
+/* 10G Short cables setup: up to 30 cm cable */
+//#define RATIO_PREQ_10G 0x3
+//#define RATIO_PST1Q_10G 0xa
+//#define RATIO_EQ_10G 0x29
+
+/* 40G Long cables setup: 1 m to 2 m cables */
+#define RATIO_PREQ_40G 0x2
+#define RATIO_PST1Q_40G 0xd
+#define RATIO_EQ_40G 0x20
+
+/* 40G Short cables setup: up to 30 cm cable */
+//#define RATIO_PREQ_40G 0x1
+//#define RATIO_PST1Q_40G 0x3
+//#define RATIO_EQ_40G 0x29
+
+/* LX2 2x40G default RCW setup */
+//#define RATIO_PREQ_40G 0x0
+//#define RATIO_PST1Q_40G 0x3
+//#define RATIO_EQ_40G 0x30
+
+/* Max/Min coefficient values */
+#define PRE_COE_MAX 0x0
+#define PRE_COE_MIN 0x8
+#define POST_COE_MAX 0x0
+#define POST_COE_MIN 0x10
+#define ZERO_COE_MAX 0x30
+#define ZERO_COE_MIN 0x0
+
+/* KR PMD defines */
+#define PMD_RESET 0x1
+#define PMD_STATUS_SUP_STAT 0x4
+#define PMD_STATUS_FRAME_LOCK 0x2
+#define TRAIN_EN 0x3
+#define TRAIN_DISABLE 0x1
+#define RX_STAT 0x1
+
+/* PCS Link up */
+#define XFI_PCS_SR1 0x20
+#define KR_RX_LINK_STAT_MASK 0x1000
+
+/* KX PCS mode register */
+#define KX_PCS_IF_MODE 0x8014
+
+/* KX PCS mode register init value */
+#define KX_IF_MODE_INIT 0x8
+
+/* KX/KR AN registers */
+#define AN_CTRL_INIT 0x1200
+#define KX_AN_AD1_INIT 0x25
+#define KR_AN_AD1_INIT_10G 0x85
+#define KR_AN_AD1_INIT_40G 0x105
+#define AN_LNK_UP_MASK 0x4
+#define KR_AN_MASK_10G 0x8
+#define KR_AN_MASK_40G 0x20
+#define TRAIN_FAIL 0x8
+#define KR_AN_40G_MDIO_OFFSET 4
+
+/* XGKR Timeouts */
+#define XGKR_TIMEOUT 1050
+#define XGKR_DENY_RT_INTERVAL 3000
+#define XGKR_AN_WAIT_ITERATIONS 5
+
+/* XGKR Increment/Decrement Requests */
+#define INCREMENT 1
+#define DECREMENT 2
+#define TIMEOUT_LONG 3
+#define TIMEOUT_M1 3
+
+/* XGKR Masks */
+#define RX_READY_MASK 0x8000
+#define PRESET_MASK 0x2000
+#define INIT_MASK 0x1000
+#define COP1_MASK 0x30
+#define COP1_SHIFT 4
+#define COZ_MASK 0xc
+#define COZ_SHIFT 2
+#define COM1_MASK 0x3
+#define COM1_SHIFT 0
+#define REQUEST_MASK 0x3f
+#define LD_ALL_MASK (PRESET_MASK | INIT_MASK | \
+ COP1_MASK | COZ_MASK | COM1_MASK)
+
+/* Lanes definitions */
+#define MASTER_LANE 0
+#define SINGLE_LANE 0
+#define MAX_PHY_LANES_NO 4
+
+/* Invalid value */
+#define VAL_INVALID 0xff
+
+/* New XGKR Training Algorithm */
+#define NEW_ALGORITHM_TRAIN_TX
+
+#ifdef NEW_ALGORITHM_TRAIN_TX
+#define FORCE_INC_COP1_NUMBER 0
+#define FORCE_INC_COM1_NUMBER 1
+#endif
+
+/* Link_Training_Registers offsets */
+static int lt_MDIO_MMD = 0;
+static u32 lt_KR_PMD_CTRL = 0;
+static u32 lt_KR_PMD_STATUS = 0;
+static u32 lt_KR_LP_CU = 0;
+static u32 lt_KR_LP_STATUS = 0;
+static u32 lt_KR_LD_CU = 0;
+static u32 lt_KR_LD_STATUS = 0;
+
+/* KX/KR AN registers offsets */
+static u32 g_an_AD1 = 0;
+static u32 g_an_BP_STAT = 0;
+
+static const u32 preq_table[] = {0x0, 0x1, 0x3, 0x5,
+ 0x7, 0x9, 0xb, 0xc, VAL_INVALID};
+static const u32 pst1q_table[] = {0x0, 0x1, 0x3, 0x5, 0x7,
+ 0x9, 0xb, 0xd, 0xf, 0x10, VAL_INVALID};
+
+enum backplane_mode {
+ PHY_BACKPLANE_1000BASE_KX,
+ PHY_BACKPLANE_10GBASE_KR,
+ PHY_BACKPLANE_40GBASE_KR,
+ PHY_BACKPLANE_INVAL
+};
+
+enum serdes_type {
+ SERDES_10G,
+ SERDES_28G,
+ SERDES_INVAL
+};
+
+enum coe_filed {
+ COE_COP1,
+ COE_COZ,
+ COE_COM
+};
+
+enum coe_update {
+ COE_NOTUPDATED,
+ COE_UPDATED,
+ COE_MIN,
+ COE_MAX,
+ COE_INV
+};
+
+enum train_state {
+ DETECTING_LP,
+ TRAINED,
+};
+
+struct tx_condition {
+ bool bin_m1_late_early;
+ bool bin_long_late_early;
+ bool bin_m1_stop;
+ bool bin_long_stop;
+ bool tx_complete;
+ bool sent_init;
+ int m1_min_max_cnt;
+ int long_min_max_cnt;
+#ifdef NEW_ALGORITHM_TRAIN_TX
+ int pre_inc;
+ int post_inc;
+#endif
+};
+
+struct xgkr_params {
+ void *reg_base; /* lane memory map: registers base address */
+ int idx; /* lane relative index inside a multi-lane PHY */
+ struct phy_device *phydev;
+ struct serdes_access *srds;
+ struct tx_condition tx_c;
+ struct delayed_work xgkr_wk;
+ enum train_state state;
+ int an_wait_count;
+ unsigned long rt_time;
+ u32 ld_update;
+ u32 ld_status;
+ u32 ratio_preq;
+ u32 ratio_pst1q;
+ u32 adpt_eq;
+ u32 tuned_ratio_preq;
+ u32 tuned_ratio_pst1q;
+ u32 tuned_adpt_eq;
+};
+
+struct xgkr_phy_data {
+ int bp_mode;
+ u32 phy_lanes;
+ struct mutex phy_lock;
+ bool aneg_done;
+ struct xgkr_params xgkr[MAX_PHY_LANES_NO];
+};
+
+static void setup_an_lt_ls(void)
+{
+ /* KR PMD registers */
+ lt_MDIO_MMD = MDIO_MMD_PMAPMD;
+ lt_KR_PMD_CTRL = 0x96;
+ lt_KR_PMD_STATUS = 0x97;
+ lt_KR_LP_CU = 0x98;
+ lt_KR_LP_STATUS = 0x99;
+ lt_KR_LD_CU = 0x9a;
+ lt_KR_LD_STATUS = 0x9b;
+
+ /* KX/KR AN registers */
+ g_an_AD1 = 0x11;
+ g_an_BP_STAT = 0x30;
+}
+
+static void setup_an_lt_lx(void)
+{
+ /* Auto-Negotiation and Link Training Core Registers page 1: 256 = 0x100 */
+ lt_MDIO_MMD = MDIO_MMD_AN;
+ lt_KR_PMD_CTRL = 0x100;
+ lt_KR_PMD_STATUS = 0x101;
+ lt_KR_LP_CU = 0x102;
+ lt_KR_LP_STATUS = 0x103;
+ lt_KR_LD_CU = 0x104;
+ lt_KR_LD_STATUS = 0x105;
+
+ /* KX/KR AN registers */
+ g_an_AD1 = 0x03;
+ g_an_BP_STAT = 0x0F;
+}
+
+static u32 le_ioread32(u32 *reg)
+{
+ return ioread32(reg);
+}
+
+static void le_iowrite32(u32 value, u32 *reg)
+{
+ iowrite32(value, reg);
+}
+
+static u32 be_ioread32(u32 *reg)
+{
+ return ioread32be(reg);
+}
+
+static void be_iowrite32(u32 value, u32 *reg)
+{
+ iowrite32be(value, reg);
+}
+
+/**
+ * xgkr_phy_write_mmd - Wrapper function for phy_write_mmd
+ * for writing a register on an MMD on a given PHY.
+ *
+ * Same rules as for phy_write_mmd();
+ */
+static int xgkr_phy_write_mmd(struct xgkr_params *xgkr, int devad, u32 regnum, u16 val)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int mdio_addr = phydev->mdio.addr;
+ int err;
+
+ mutex_lock(&xgkr_inst->phy_lock);
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR && devad == MDIO_MMD_AN) {
+ //40G AN: prepare mdio address for writing phydev AN registers for 40G on respective lane
+ phydev->mdio.addr = KR_AN_40G_MDIO_OFFSET + xgkr->idx;
+ }
+
+ err = phy_write_mmd(phydev, devad, regnum, val);
+ if (err)
+ dev_err(&phydev->mdio.dev, "Writing PHY (%p) MMD = 0x%02x register = 0x%02x failed with error code: 0x%08x \n", phydev, devad, regnum, err);
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR && devad == MDIO_MMD_AN) {
+ //40G AN: restore mdio address
+ phydev->mdio.addr = mdio_addr;
+ }
+
+ mutex_unlock(&xgkr_inst->phy_lock);
+
+ return err;
+}
+
+/**
+ * xgkr_phy_read_mmd - Wrapper function for phy_read_mmd
+ * for reading a register from an MMD on a given PHY.
+ *
+ * Same rules as for phy_read_mmd();
+ */
+static int xgkr_phy_read_mmd(struct xgkr_params *xgkr, int devad, u32 regnum)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int mdio_addr = phydev->mdio.addr;
+ int ret;
+
+ mutex_lock(&xgkr_inst->phy_lock);
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR && devad == MDIO_MMD_AN) {
+ //40G AN: prepare mdio address for reading phydev AN registers for 40G on respective lane
+ phydev->mdio.addr = KR_AN_40G_MDIO_OFFSET + xgkr->idx;
+ }
+
+ ret = phy_read_mmd(phydev, devad, regnum);
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR && devad == MDIO_MMD_AN) {
+ //40G AN: restore mdio address
+ phydev->mdio.addr = mdio_addr;
+ }
+
+ mutex_unlock(&xgkr_inst->phy_lock);
+
+ return ret;
+}
+
+static void tx_condition_init(struct tx_condition *tx_c)
+{
+ tx_c->bin_m1_late_early = true;
+ tx_c->bin_long_late_early = false;
+ tx_c->bin_m1_stop = false;
+ tx_c->bin_long_stop = false;
+ tx_c->tx_complete = false;
+ tx_c->sent_init = false;
+ tx_c->m1_min_max_cnt = 0;
+ tx_c->long_min_max_cnt = 0;
+#ifdef NEW_ALGORITHM_TRAIN_TX
+ tx_c->pre_inc = FORCE_INC_COM1_NUMBER;
+ tx_c->post_inc = FORCE_INC_COP1_NUMBER;
+#endif
+}
+
+void tune_tecr(struct xgkr_params *xgkr)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ bool reset = false;
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR) {
+ /* Reset only the Master Lane */
+ reset = (xgkr->idx == MASTER_LANE);
+ } else {
+ reset = true;
+ }
+
+ xgkr->srds->tune_tecr(xgkr->reg_base, xgkr->ratio_preq, xgkr->ratio_pst1q, xgkr->adpt_eq, reset);
+
+ xgkr->tuned_ratio_preq = xgkr->ratio_preq;
+ xgkr->tuned_ratio_pst1q = xgkr->ratio_pst1q;
+ xgkr->tuned_adpt_eq = xgkr->adpt_eq;
+}
+
+static void start_lt(struct xgkr_params *xgkr)
+{
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_PMD_CTRL, TRAIN_EN);
+}
+
+static void stop_lt(struct xgkr_params *xgkr)
+{
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_PMD_CTRL, TRAIN_DISABLE);
+}
+
+static void reset_lt(struct xgkr_params *xgkr)
+{
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, MDIO_CTRL1, PMD_RESET);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_PMD_CTRL, TRAIN_DISABLE);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_LD_CU, 0);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_LD_STATUS, 0);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_PMD_STATUS, 0);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_LP_CU, 0);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD, lt_KR_LP_STATUS, 0);
+
+}
+
+static void ld_coe_status(struct xgkr_params *xgkr)
+{
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD,
+ lt_KR_LD_STATUS, xgkr->ld_status);
+}
+
+static void ld_coe_update(struct xgkr_params *xgkr)
+{
+ dev_dbg(&xgkr->phydev->mdio.dev, "sending request: %x\n", xgkr->ld_update);
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD,
+ lt_KR_LD_CU, xgkr->ld_update);
+}
+
+static void start_xgkr_state_machine(struct delayed_work *work)
+{
+ queue_delayed_work(system_power_efficient_wq, work,
+ msecs_to_jiffies(XGKR_TIMEOUT));
+}
+
+static void start_xgkr_an(struct xgkr_params *xgkr)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int i;
+ int err;
+
+ switch (xgkr_inst->bp_mode)
+ {
+ case PHY_BACKPLANE_1000BASE_KX:
+ dev_err(&phydev->mdio.dev, "Wrong call path for 1000Base-KX \n");
+ break;
+
+ case PHY_BACKPLANE_10GBASE_KR:
+ err = xgkr_phy_write_mmd(xgkr, MDIO_MMD_AN, g_an_AD1, KR_AN_AD1_INIT_10G);
+ if (err)
+ dev_err(&phydev->mdio.dev, "Setting AN register 0x%02x failed with error code: 0x%08x \n", g_an_AD1, err);
+ udelay(1);
+ err = xgkr_phy_write_mmd(xgkr, MDIO_MMD_AN, MDIO_CTRL1, AN_CTRL_INIT);
+ if (err)
+ dev_err(&phydev->mdio.dev, "Setting AN register 0x%02x failed with error code: 0x%08x \n", MDIO_CTRL1, err);
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ if (xgkr->idx == MASTER_LANE) {
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ err = xgkr_phy_write_mmd(&xgkr_inst->xgkr[i], MDIO_MMD_AN, g_an_AD1, KR_AN_AD1_INIT_40G);
+ if (err)
+ dev_err(&phydev->mdio.dev, "Setting AN register 0x%02x on lane %d failed with error code: 0x%08x \n", g_an_AD1, xgkr_inst->xgkr[i].idx, err);
+ }
+ udelay(1);
+ err = xgkr_phy_write_mmd(xgkr, MDIO_MMD_AN, MDIO_CTRL1, AN_CTRL_INIT);
+ if (err)
+ dev_err(&phydev->mdio.dev, "Setting AN register 0x%02x on Master Lane failed with error code: 0x%08x \n", MDIO_CTRL1, err);
+ }
+ break;
+ }
+}
+
+static void start_1gkx_an(struct phy_device *phydev)
+{
+ phy_write_mmd(phydev, MDIO_MMD_PCS, KX_PCS_IF_MODE, KX_IF_MODE_INIT);
+ phy_write_mmd(phydev, MDIO_MMD_AN, g_an_AD1, KX_AN_AD1_INIT);
+ phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
+ phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1, AN_CTRL_INIT);
+}
+
+static void reset_tecr(struct xgkr_params *xgkr)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+
+ switch (xgkr_inst->bp_mode)
+ {
+ case PHY_BACKPLANE_1000BASE_KX:
+ dev_err(&phydev->mdio.dev, "Wrong call path for 1000Base-KX \n");
+ break;
+
+ case PHY_BACKPLANE_10GBASE_KR:
+ xgkr->ratio_preq = RATIO_PREQ_10G;
+ xgkr->ratio_pst1q = RATIO_PST1Q_10G;
+ xgkr->adpt_eq = RATIO_EQ_10G;
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ xgkr->ratio_preq = RATIO_PREQ_40G;
+ xgkr->ratio_pst1q = RATIO_PST1Q_40G;
+ xgkr->adpt_eq = RATIO_EQ_40G;
+ break;
+ }
+
+ tune_tecr(xgkr);
+}
+
+static void init_xgkr(struct xgkr_params *xgkr, int reset)
+{
+ if (reset)
+ reset_tecr(xgkr);
+
+ tx_condition_init(&xgkr->tx_c);
+ xgkr->state = DETECTING_LP;
+
+ xgkr->ld_status &= RX_READY_MASK;
+ ld_coe_status(xgkr);
+ xgkr->ld_update = 0;
+ xgkr->ld_status &= ~RX_READY_MASK;
+ ld_coe_status(xgkr);
+
+}
+
+static void initialize(struct xgkr_params *xgkr)
+{
+ reset_tecr(xgkr);
+
+ xgkr->ld_status &= ~(COP1_MASK | COZ_MASK | COM1_MASK);
+ xgkr->ld_status |= COE_UPDATED << COP1_SHIFT |
+ COE_UPDATED << COZ_SHIFT |
+ COE_UPDATED << COM1_SHIFT;
+ ld_coe_status(xgkr);
+}
+
+static void train_remote_tx(struct xgkr_params *xgkr)
+{
+ struct tx_condition *tx_c = &xgkr->tx_c;
+ bool bin_m1_early, bin_long_early;
+ u32 lp_status, old_ld_update;
+ u32 status_cop1, status_coz, status_com1;
+ u32 req_cop1, req_coz, req_com1, req_preset, req_init;
+ u32 temp;
+#ifdef NEW_ALGORITHM_TRAIN_TX
+ u32 median_gaink2;
+#endif
+
+recheck:
+ if (tx_c->bin_long_stop && tx_c->bin_m1_stop) {
+ tx_c->tx_complete = true;
+ xgkr->ld_status |= RX_READY_MASK;
+ ld_coe_status(xgkr);
+
+ /* tell LP we are ready */
+ xgkr_phy_write_mmd(xgkr, lt_MDIO_MMD,
+ lt_KR_PMD_STATUS, RX_STAT);
+
+ return;
+ }
+
+ /* We start by checking the current LP status. If we got any responses,
+ * we can clear up the appropriate update request so that the
+ * subsequent code may easily issue new update requests if needed.
+ */
+ lp_status = xgkr_phy_read_mmd(xgkr, lt_MDIO_MMD, lt_KR_LP_STATUS) &
+ REQUEST_MASK;
+
+ status_cop1 = (lp_status & COP1_MASK) >> COP1_SHIFT;
+ status_coz = (lp_status & COZ_MASK) >> COZ_SHIFT;
+ status_com1 = (lp_status & COM1_MASK) >> COM1_SHIFT;
+
+ old_ld_update = xgkr->ld_update;
+ req_cop1 = (old_ld_update & COP1_MASK) >> COP1_SHIFT;
+ req_coz = (old_ld_update & COZ_MASK) >> COZ_SHIFT;
+ req_com1 = (old_ld_update & COM1_MASK) >> COM1_SHIFT;
+ req_preset = old_ld_update & PRESET_MASK;
+ req_init = old_ld_update & INIT_MASK;
+
+ /* IEEE802.3-2008, 72.6.10.2.3.1
+ * We may clear PRESET when all coefficients show UPDATED or MAX.
+ */
+ if (req_preset) {
+ if ((status_cop1 == COE_UPDATED || status_cop1 == COE_MAX) &&
+ (status_coz == COE_UPDATED || status_coz == COE_MAX) &&
+ (status_com1 == COE_UPDATED || status_com1 == COE_MAX)) {
+ xgkr->ld_update &= ~PRESET_MASK;
+ }
+ }
+
+ /* IEEE802.3-2008, 72.6.10.2.3.2
+ * We may clear INITIALIZE when no coefficients show NOT UPDATED.
+ */
+ if (req_init) {
+ if (status_cop1 != COE_NOTUPDATED &&
+ status_coz != COE_NOTUPDATED &&
+ status_com1 != COE_NOTUPDATED) {
+ xgkr->ld_update &= ~INIT_MASK;
+ }
+ }
+
+ /* IEEE802.3-2008, 72.6.10.2.3.2
+ * we send initialize to the other side to ensure default settings
+ * for the LP. Naturally, we should do this only once.
+ */
+ if (!tx_c->sent_init) {
+ if (!lp_status && !(old_ld_update & (LD_ALL_MASK))) {
+ xgkr->ld_update = INIT_MASK;
+ tx_c->sent_init = true;
+ }
+ }
+
+ /* IEEE802.3-2008, 72.6.10.2.3.3
+ * We set coefficient requests to HOLD when we get the information
+ * about any updates On clearing our prior response, we also update
+ * our internal status.
+ */
+ if (status_cop1 != COE_NOTUPDATED) {
+ if (req_cop1) {
+ xgkr->ld_update &= ~COP1_MASK;
+#ifdef NEW_ALGORITHM_TRAIN_TX
+ if (tx_c->post_inc) {
+ if (req_cop1 == INCREMENT &&
+ status_cop1 == COE_MAX) {
+ tx_c->post_inc = 0;
+ tx_c->bin_long_stop = true;
+ tx_c->bin_m1_stop = true;
+ } else {
+ tx_c->post_inc -= 1;
+ }
+
+ ld_coe_update(xgkr);
+ goto recheck;
+ }
+#endif
+ if ((req_cop1 == DECREMENT && status_cop1 == COE_MIN) ||
+ (req_cop1 == INCREMENT && status_cop1 == COE_MAX)) {
+ dev_dbg(&xgkr->phydev->mdio.dev, "COP1 hit limit %s",
+ (status_cop1 == COE_MIN) ?
+ "DEC MIN" : "INC MAX");
+ tx_c->long_min_max_cnt++;
+ if (tx_c->long_min_max_cnt >= TIMEOUT_LONG) {
+ tx_c->bin_long_stop = true;
+ ld_coe_update(xgkr);
+ goto recheck;
+ }
+ }
+ }
+ }
+
+ if (status_coz != COE_NOTUPDATED) {
+ if (req_coz)
+ xgkr->ld_update &= ~COZ_MASK;
+ }
+
+ if (status_com1 != COE_NOTUPDATED) {
+ if (req_com1) {
+ xgkr->ld_update &= ~COM1_MASK;
+#ifdef NEW_ALGORITHM_TRAIN_TX
+ if (tx_c->pre_inc) {
+ if (req_com1 == INCREMENT &&
+ status_com1 == COE_MAX)
+ tx_c->pre_inc = 0;
+ else
+ tx_c->pre_inc -= 1;
+
+ ld_coe_update(xgkr);
+ goto recheck;
+ }
+#endif
+ /* Stop If we have reached the limit for a parameter. */
+ if ((req_com1 == DECREMENT && status_com1 == COE_MIN) ||
+ (req_com1 == INCREMENT && status_com1 == COE_MAX)) {
+ dev_dbg(&xgkr->phydev->mdio.dev, "COM1 hit limit %s",
+ (status_com1 == COE_MIN) ?
+ "DEC MIN" : "INC MAX");
+ tx_c->m1_min_max_cnt++;
+ if (tx_c->m1_min_max_cnt >= TIMEOUT_M1) {
+ tx_c->bin_m1_stop = true;
+ ld_coe_update(xgkr);
+ goto recheck;
+ }
+ }
+ }
+ }
+
+ if (old_ld_update != xgkr->ld_update) {
+ ld_coe_update(xgkr);
+ /* Redo these status checks and updates until we have no more
+ * changes, to speed up the overall process.
+ */
+ goto recheck;
+ }
+
+ /* Do nothing if we have pending request. */
+ if ((req_coz || req_com1 || req_cop1))
+ return;
+ else if (lp_status)
+ /* No pending request but LP status was not reverted to
+ * not updated.
+ */
+ return;
+
+#ifdef NEW_ALGORITHM_TRAIN_TX
+ if (!(xgkr->ld_update & (PRESET_MASK | INIT_MASK))) {
+ if (tx_c->pre_inc) {
+ xgkr->ld_update = INCREMENT << COM1_SHIFT;
+ ld_coe_update(xgkr);
+ return;
+ }
+
+ if (status_cop1 != COE_MAX) {
+ median_gaink2 = xgkr->srds->get_median_gaink2(xgkr->reg_base);
+ if (median_gaink2 == 0xf) {
+ tx_c->post_inc = 1;
+ } else {
+ /* Gaink2 median lower than "F" */
+ tx_c->bin_m1_stop = true;
+ tx_c->bin_long_stop = true;
+ goto recheck;
+ }
+ } else {
+ /* C1 MAX */
+ tx_c->bin_m1_stop = true;
+ tx_c->bin_long_stop = true;
+ goto recheck;
+ }
+
+ if (tx_c->post_inc) {
+ xgkr->ld_update = INCREMENT << COP1_SHIFT;
+ ld_coe_update(xgkr);
+ return;
+ }
+ }
+#endif
+
+ /* snapshot and select bin */
+ bin_m1_early = xgkr->srds->is_bin_early(BIN_M1, xgkr->reg_base);
+ bin_long_early = xgkr->srds->is_bin_early(BIN_LONG, xgkr->reg_base);
+
+ if (!tx_c->bin_m1_stop && !tx_c->bin_m1_late_early && bin_m1_early) {
+ tx_c->bin_m1_stop = true;
+ goto recheck;
+ }
+
+ if (!tx_c->bin_long_stop &&
+ tx_c->bin_long_late_early && !bin_long_early) {
+ tx_c->bin_long_stop = true;
+ goto recheck;
+ }
+
+ /* IEEE802.3-2008, 72.6.10.2.3.3
+ * We only request coefficient updates when no PRESET/INITIALIZE is
+ * pending. We also only request coefficient updates when the
+ * corresponding status is NOT UPDATED and nothing is pending.
+ */
+ if (!(xgkr->ld_update & (PRESET_MASK | INIT_MASK))) {
+ if (!tx_c->bin_long_stop) {
+ /* BinM1 correction means changing COM1 */
+ if (!status_com1 && !(xgkr->ld_update & COM1_MASK)) {
+ /* Avoid BinM1Late by requesting an
+ * immediate decrement.
+ */
+ if (!bin_m1_early) {
+ /* request decrement c(-1) */
+ temp = DECREMENT << COM1_SHIFT;
+ xgkr->ld_update = temp;
+ ld_coe_update(xgkr);
+ tx_c->bin_m1_late_early = bin_m1_early;
+ return;
+ }
+ }
+
+ /* BinLong correction means changing COP1 */
+ if (!status_cop1 && !(xgkr->ld_update & COP1_MASK)) {
+ /* Locate BinLong transition point (if any)
+ * while avoiding BinM1Late.
+ */
+ if (bin_long_early) {
+ /* request increment c(1) */
+ temp = INCREMENT << COP1_SHIFT;
+ xgkr->ld_update = temp;
+ } else {
+ /* request decrement c(1) */
+ temp = DECREMENT << COP1_SHIFT;
+ xgkr->ld_update = temp;
+ }
+
+ ld_coe_update(xgkr);
+ tx_c->bin_long_late_early = bin_long_early;
+ }
+ /* We try to finish BinLong before we do BinM1 */
+ return;
+ }
+
+ if (!tx_c->bin_m1_stop) {
+ /* BinM1 correction means changing COM1 */
+ if (!status_com1 && !(xgkr->ld_update & COM1_MASK)) {
+ /* Locate BinM1 transition point (if any) */
+ if (bin_m1_early) {
+ /* request increment c(-1) */
+ temp = INCREMENT << COM1_SHIFT;
+ xgkr->ld_update = temp;
+ } else {
+ /* request decrement c(-1) */
+ temp = DECREMENT << COM1_SHIFT;
+ xgkr->ld_update = temp;
+ }
+
+ ld_coe_update(xgkr);
+ tx_c->bin_m1_late_early = bin_m1_early;
+ }
+ }
+ }
+}
+
+static int is_link_up(struct phy_device *phydev)
+{
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int val = 0;
+
+ mutex_lock(&xgkr_inst->phy_lock);
+
+ val = phy_read_mmd(phydev, MDIO_MMD_PCS, XFI_PCS_SR1);
+
+ mutex_unlock(&xgkr_inst->phy_lock);
+
+ return (val & KR_RX_LINK_STAT_MASK) ? 1 : 0;
+}
+
+static int is_link_training_fail(struct xgkr_params *xgkr)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ int val;
+ int timeout = 100;
+
+ val = xgkr_phy_read_mmd(xgkr, lt_MDIO_MMD, lt_KR_PMD_STATUS);
+
+ if (!(val & TRAIN_FAIL) && (val & RX_STAT)) {
+ /* check LNK_STAT for sure */
+ while (timeout--) {
+ if (is_link_up(phydev))
+ return 0;
+
+ usleep_range(100, 500);
+ }
+ }
+
+ return 1;
+}
+
+static int check_rx(struct xgkr_params *xgkr)
+{
+ return xgkr_phy_read_mmd(xgkr, lt_MDIO_MMD, lt_KR_LP_STATUS) &
+ RX_READY_MASK;
+}
+
+/* Coefficient values have hardware restrictions */
+static int is_ld_valid(struct xgkr_params *xgkr)
+{
+ u32 ratio_pst1q = xgkr->ratio_pst1q;
+ u32 adpt_eq = xgkr->adpt_eq;
+ u32 ratio_preq = xgkr->ratio_preq;
+
+ if ((ratio_pst1q + adpt_eq + ratio_preq) > 48)
+ return 0;
+
+ if (((ratio_pst1q + adpt_eq + ratio_preq) * 4) >=
+ ((adpt_eq - ratio_pst1q - ratio_preq) * 17))
+ return 0;
+
+ if (ratio_preq > ratio_pst1q)
+ return 0;
+
+ if (ratio_preq > 8)
+ return 0;
+
+ if (adpt_eq < 26)
+ return 0;
+
+ if (ratio_pst1q > 16)
+ return 0;
+
+ return 1;
+}
+
+static int is_value_allowed(const u32 *val_table, u32 val)
+{
+ int i;
+
+ for (i = 0;; i++) {
+ if (*(val_table + i) == VAL_INVALID)
+ return 0;
+ if (*(val_table + i) == val)
+ return 1;
+ }
+}
+
+static enum coe_update inc_dec(struct xgkr_params *xgkr, int field, int request)
+{
+ u32 ld_limit[3], ld_coe[3], step[3];
+
+ ld_coe[0] = xgkr->ratio_pst1q;
+ ld_coe[1] = xgkr->adpt_eq;
+ ld_coe[2] = xgkr->ratio_preq;
+
+ /* Information specific to the SerDes for 10GBase-KR:
+ * Incrementing C(+1) means *decrementing* RATIO_PST1Q
+ * Incrementing C(0) means incrementing ADPT_EQ
+ * Incrementing C(-1) means *decrementing* RATIO_PREQ
+ */
+ step[0] = -1;
+ step[1] = 1;
+ step[2] = -1;
+
+ switch (request) {
+ case INCREMENT:
+ ld_limit[0] = POST_COE_MAX;
+ ld_limit[1] = ZERO_COE_MAX;
+ ld_limit[2] = PRE_COE_MAX;
+ if (ld_coe[field] != ld_limit[field])
+ ld_coe[field] += step[field];
+ else
+ /* MAX */
+ return COE_MAX;
+ break;
+ case DECREMENT:
+ ld_limit[0] = POST_COE_MIN;
+ ld_limit[1] = ZERO_COE_MIN;
+ ld_limit[2] = PRE_COE_MIN;
+ if (ld_coe[field] != ld_limit[field])
+ ld_coe[field] -= step[field];
+ else
+ /* MIN */
+ return COE_MIN;
+ break;
+ default:
+ break;
+ }
+
+ if (is_ld_valid(xgkr)) {
+ /* accept new ld */
+ xgkr->ratio_pst1q = ld_coe[0];
+ xgkr->adpt_eq = ld_coe[1];
+ xgkr->ratio_preq = ld_coe[2];
+ /* only some values for preq and pst1q can be used.
+ * for preq: 0x0, 0x1, 0x3, 0x5, 0x7, 0x9, 0xb, 0xc.
+ * for pst1q: 0x0, 0x1, 0x3, 0x5, 0x7, 0x9, 0xb, 0xd, 0xf, 0x10.
+ */
+ if (!is_value_allowed((const u32 *)&preq_table, ld_coe[2])) {
+ dev_dbg(&xgkr->phydev->mdio.dev,
+ "preq skipped value: %d\n", ld_coe[2]);
+ /* NOT UPDATED */
+ return COE_NOTUPDATED;
+ }
+
+ if (!is_value_allowed((const u32 *)&pst1q_table, ld_coe[0])) {
+ dev_dbg(&xgkr->phydev->mdio.dev,
+ "pst1q skipped value: %d\n", ld_coe[0]);
+ /* NOT UPDATED */
+ return COE_NOTUPDATED;
+ }
+
+ tune_tecr(xgkr);
+ } else {
+ if (request == DECREMENT)
+ /* MIN */
+ return COE_MIN;
+ if (request == INCREMENT)
+ /* MAX */
+ return COE_MAX;
+ }
+
+ /* UPDATED */
+ return COE_UPDATED;
+}
+
+static void min_max_updated(struct xgkr_params *xgkr, int field, enum coe_update cs)
+{
+ u32 mask, val;
+ u32 ld_cs = cs;
+
+ if (cs == COE_INV)
+ return;
+
+ switch (field) {
+ case COE_COP1:
+ mask = COP1_MASK;
+ val = ld_cs << COP1_SHIFT;
+ break;
+ case COE_COZ:
+ mask = COZ_MASK;
+ val = ld_cs << COZ_SHIFT;
+ break;
+ case COE_COM:
+ mask = COM1_MASK;
+ val = ld_cs << COM1_SHIFT;
+ break;
+ default:
+ return;
+ }
+
+ xgkr->ld_status &= ~mask;
+ xgkr->ld_status |= val;
+}
+
+static void check_request(struct xgkr_params *xgkr, int request)
+{
+ int cop1_req, coz_req, com_req;
+ int old_status;
+ enum coe_update cu;
+
+ cop1_req = (request & COP1_MASK) >> COP1_SHIFT;
+ coz_req = (request & COZ_MASK) >> COZ_SHIFT;
+ com_req = (request & COM1_MASK) >> COM1_SHIFT;
+
+ /* IEEE802.3-2008, 72.6.10.2.5
+ * Ensure we only act on INCREMENT/DECREMENT when we are in NOT UPDATED
+ */
+ old_status = xgkr->ld_status;
+
+ if (cop1_req && !(xgkr->ld_status & COP1_MASK)) {
+ cu = inc_dec(xgkr, COE_COP1, cop1_req);
+ min_max_updated(xgkr, COE_COP1, cu);
+ }
+
+ if (coz_req && !(xgkr->ld_status & COZ_MASK)) {
+ cu = inc_dec(xgkr, COE_COZ, coz_req);
+ min_max_updated(xgkr, COE_COZ, cu);
+ }
+
+ if (com_req && !(xgkr->ld_status & COM1_MASK)) {
+ cu = inc_dec(xgkr, COE_COM, com_req);
+ min_max_updated(xgkr, COE_COM, cu);
+ }
+
+ if (old_status != xgkr->ld_status)
+ ld_coe_status(xgkr);
+}
+
+static void preset(struct xgkr_params *xgkr)
+{
+ /* These are all MAX values from the IEEE802.3 perspective. */
+ xgkr->ratio_pst1q = POST_COE_MAX;
+ xgkr->adpt_eq = ZERO_COE_MAX;
+ xgkr->ratio_preq = PRE_COE_MAX;
+
+ tune_tecr(xgkr);
+ xgkr->ld_status &= ~(COP1_MASK | COZ_MASK | COM1_MASK);
+ xgkr->ld_status |= COE_MAX << COP1_SHIFT |
+ COE_MAX << COZ_SHIFT |
+ COE_MAX << COM1_SHIFT;
+ ld_coe_status(xgkr);
+}
+
+static void train_local_tx(struct xgkr_params *xgkr)
+{
+ int request, old_ld_status;
+
+ /* get request from LP */
+ request = xgkr_phy_read_mmd(xgkr, lt_MDIO_MMD, lt_KR_LP_CU) &
+ (LD_ALL_MASK);
+
+ old_ld_status = xgkr->ld_status;
+
+ /* IEEE802.3-2008, 72.6.10.2.5
+ * Ensure we always go to NOT UDPATED for status reporting in
+ * response to HOLD requests.
+ * IEEE802.3-2008, 72.6.10.2.3.1/2
+ * ... but only if PRESET/INITIALIZE are not active to ensure
+ * we keep status until they are released.
+ */
+ if (!(request & (PRESET_MASK | INIT_MASK))) {
+ if (!(request & COP1_MASK))
+ xgkr->ld_status &= ~COP1_MASK;
+
+ if (!(request & COZ_MASK))
+ xgkr->ld_status &= ~COZ_MASK;
+
+ if (!(request & COM1_MASK))
+ xgkr->ld_status &= ~COM1_MASK;
+
+ if (old_ld_status != xgkr->ld_status)
+ ld_coe_status(xgkr);
+ }
+
+ /* As soon as the LP shows ready, no need to do any more updates. */
+ if (check_rx(xgkr)) {
+ /* LP receiver is ready */
+ if (xgkr->ld_status & (COP1_MASK | COZ_MASK | COM1_MASK)) {
+ xgkr->ld_status &= ~(COP1_MASK | COZ_MASK | COM1_MASK);
+ ld_coe_status(xgkr);
+ }
+ } else {
+ /* IEEE802.3-2008, 72.6.10.2.3.1/2
+ * only act on PRESET/INITIALIZE if all status is NOT UPDATED.
+ */
+ if (request & (PRESET_MASK | INIT_MASK)) {
+ if (!(xgkr->ld_status &
+ (COP1_MASK | COZ_MASK | COM1_MASK))) {
+ if (request & PRESET_MASK)
+ preset(xgkr);
+
+ if (request & INIT_MASK)
+ initialize(xgkr);
+ }
+ }
+
+ /* LP Coefficient are not in HOLD */
+ if (request & REQUEST_MASK)
+ check_request(xgkr, request & REQUEST_MASK);
+ }
+}
+
+static void xgkr_start_train(struct xgkr_params *xgkr)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ struct tx_condition *tx_c = &xgkr->tx_c;
+ int val = 0, i, j;
+ int lt_state;
+ unsigned long dead_line;
+ int lp_rx_ready, tx_training_complete;
+ u32 lt_timeout = 500;
+
+ init_xgkr(xgkr, 0);
+
+ start_lt(xgkr);
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR) {
+ lt_timeout = 2000;
+ }
+
+ for (i = 0; i < 2;) {
+
+ dead_line = jiffies + msecs_to_jiffies(lt_timeout);
+
+ while (time_before(jiffies, dead_line)) {
+
+ val = xgkr_phy_read_mmd(xgkr, lt_MDIO_MMD,
+ lt_KR_PMD_STATUS);
+
+ if (val & TRAIN_FAIL) {
+ /* LT failed already, reset lane to avoid
+ * it run into hanging, then start LT again.
+ */
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR) {
+ /* Reset only the Master Lane */
+ if (xgkr->idx == MASTER_LANE)
+ xgkr->srds->reset_lane(xgkr->reg_base);
+ } else {
+ xgkr->srds->reset_lane(xgkr->reg_base);
+ }
+
+ start_lt(xgkr);
+ } else if ((val & PMD_STATUS_SUP_STAT) &&
+ (val & PMD_STATUS_FRAME_LOCK))
+ break;
+ usleep_range(100, 500);
+ }
+
+ if (!((val & PMD_STATUS_FRAME_LOCK) &&
+ (val & PMD_STATUS_SUP_STAT))) {
+ i++;
+ continue;
+ }
+
+ /* init process */
+ lp_rx_ready = false;
+ tx_training_complete = false;
+ /* the LT should be finished in 500ms, failed or OK. */
+ dead_line = jiffies + msecs_to_jiffies(lt_timeout);
+
+ while (time_before(jiffies, dead_line)) {
+ /* check if the LT is already failed */
+
+ lt_state = xgkr_phy_read_mmd(xgkr, lt_MDIO_MMD,
+ lt_KR_PMD_STATUS);
+
+ if (lt_state & TRAIN_FAIL) {
+
+ if (xgkr_inst->bp_mode == PHY_BACKPLANE_40GBASE_KR) {
+ /* Reset only the Master Lane */
+ if (xgkr->idx == MASTER_LANE)
+ xgkr->srds->reset_lane(xgkr->reg_base);
+ } else {
+ xgkr->srds->reset_lane(xgkr->reg_base);
+ }
+
+ break;
+ }
+
+ lp_rx_ready = check_rx(xgkr);
+ tx_training_complete = tx_c->tx_complete;
+
+ if (lp_rx_ready && tx_training_complete)
+ break;
+
+ if (!lp_rx_ready)
+ train_local_tx(xgkr);
+
+ if (!tx_training_complete)
+ train_remote_tx(xgkr);
+
+ usleep_range(100, 500);
+ }
+
+ i++;
+ /* check LT result */
+ if (is_link_training_fail(xgkr)) {
+ init_xgkr(xgkr, 0);
+ continue;
+ } else {
+ stop_lt(xgkr);
+ xgkr->state = TRAINED;
+
+ switch (xgkr_inst->bp_mode)
+ {
+ case PHY_BACKPLANE_10GBASE_KR:
+ if (phydev->attached_dev == NULL)
+ dev_info(&phydev->mdio.dev, "10GBase-KR link trained (Tx equalization: RATIO_PREQ = 0x%x, RATIO_PST1Q = 0x%x, ADPT_EQ = 0x%x)\n",
+ xgkr->tuned_ratio_preq, xgkr->tuned_ratio_pst1q, xgkr->tuned_adpt_eq);
+ else
+ dev_info(&phydev->mdio.dev, "%s %s: 10GBase-KR link trained (Tx equalization: RATIO_PREQ = 0x%x, RATIO_PST1Q = 0x%x, ADPT_EQ = 0x%x)\n",
+ dev_driver_string(phydev->attached_dev->dev.parent),
+ dev_name(phydev->attached_dev->dev.parent),
+ xgkr->tuned_ratio_preq, xgkr->tuned_ratio_pst1q, xgkr->tuned_adpt_eq);
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ if (xgkr->idx == xgkr_inst->phy_lanes - 1) {
+ if (phydev->attached_dev == NULL)
+ dev_info(&phydev->mdio.dev, "40GBase-KR link trained at lanes Tx equalization:\n");
+ else
+ dev_info(&phydev->mdio.dev, "%s %s: 40GBase-KR link trained at lanes Tx equalization:\n",
+ dev_driver_string(phydev->attached_dev->dev.parent),
+ dev_name(phydev->attached_dev->dev.parent));
+
+ for (j = 0; j < xgkr_inst->phy_lanes; j++) {
+ if (phydev->attached_dev == NULL)
+ dev_info(&phydev->mdio.dev, "40GBase-KR Lane %d: RATIO_PREQ = 0x%x, RATIO_PST1Q = 0x%x, ADPT_EQ = 0x%x\n",
+ j, xgkr_inst->xgkr[j].tuned_ratio_preq, xgkr_inst->xgkr[j].tuned_ratio_pst1q, xgkr_inst->xgkr[j].tuned_adpt_eq);
+ else
+ dev_info(&phydev->mdio.dev, "%s %s: 40GBase-KR Lane %d: RATIO_PREQ = 0x%x, RATIO_PST1Q = 0x%x, ADPT_EQ = 0x%x\n",
+ dev_driver_string(phydev->attached_dev->dev.parent),
+ dev_name(phydev->attached_dev->dev.parent),
+ j, xgkr_inst->xgkr[j].tuned_ratio_preq, xgkr_inst->xgkr[j].tuned_ratio_pst1q, xgkr_inst->xgkr[j].tuned_adpt_eq);
+ }
+ }
+ break;
+ }
+
+ break;
+ }
+ }
+}
+
+static void xgkr_request_restart_an(struct xgkr_params *xgkr)
+{
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int i;
+
+ if (time_before(jiffies, xgkr->rt_time))
+ return;
+
+ switch (xgkr_inst->bp_mode)
+ {
+ case PHY_BACKPLANE_1000BASE_KX:
+ dev_err(&phydev->mdio.dev, "Wrong call path for 1000Base-KX \n");
+ break;
+
+ case PHY_BACKPLANE_10GBASE_KR:
+ init_xgkr(xgkr, 0);
+ reset_lt(xgkr);
+ xgkr->state = DETECTING_LP;
+ start_xgkr_an(xgkr);
+ start_xgkr_state_machine(&xgkr->xgkr_wk);
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ init_xgkr(&xgkr_inst->xgkr[i], 0);
+ reset_lt(&xgkr_inst->xgkr[i]);
+ xgkr_inst->xgkr[i].state = DETECTING_LP;
+ }
+ //Start AN only for Master Lane
+ start_xgkr_an(&xgkr_inst->xgkr[MASTER_LANE]);
+ //start state machine
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ start_xgkr_state_machine(&xgkr_inst->xgkr[i].xgkr_wk);
+ }
+ break;
+ }
+
+ xgkr->rt_time = jiffies + msecs_to_jiffies(XGKR_DENY_RT_INTERVAL);
+}
+
+static void xgkr_state_machine(struct work_struct *work)
+{
+ struct delayed_work *dwork = to_delayed_work(work);
+ struct xgkr_params *xgkr = container_of(dwork,
+ struct xgkr_params, xgkr_wk);
+ struct phy_device *phydev = xgkr->phydev;
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int an_state;
+ bool start_train = false;
+ bool all_lanes_trained = false;
+ int i;
+
+ if (!xgkr_inst->aneg_done) {
+ start_xgkr_state_machine(&xgkr->xgkr_wk);
+ return;
+ }
+
+ mutex_lock(&phydev->lock);
+
+ switch (xgkr->state) {
+ case DETECTING_LP:
+
+ switch (xgkr_inst->bp_mode)
+ {
+ case PHY_BACKPLANE_1000BASE_KX:
+ dev_err(&phydev->mdio.dev, "Wrong call path for 1000Base-KX \n");
+ break;
+
+ case PHY_BACKPLANE_10GBASE_KR:
+ an_state = xgkr_phy_read_mmd(xgkr, MDIO_MMD_AN, g_an_BP_STAT);
+ if (an_state & KR_AN_MASK_10G) {
+ //AN acquired: Train the lane
+ xgkr->an_wait_count = 0;
+ start_train = true;
+ } else {
+ //AN lost or not yet acquired
+ if (!is_link_up(phydev)) {
+ //Link is down: restart training
+ xgkr->an_wait_count = 0;
+ xgkr_request_restart_an(xgkr);
+ } else {
+ //Link is up: wait few iterations for AN to be acquired
+ if (xgkr->an_wait_count >= XGKR_AN_WAIT_ITERATIONS) {
+ xgkr->an_wait_count = 0;
+ xgkr_request_restart_an(xgkr);
+ } else {
+ xgkr->an_wait_count++;
+ }
+ }
+ }
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ //Check AN state only on Master Lane
+ an_state = xgkr_phy_read_mmd(&xgkr_inst->xgkr[MASTER_LANE], MDIO_MMD_AN, g_an_BP_STAT);
+ if (an_state & KR_AN_MASK_40G) {
+ //AN acquired: Train all lanes in order starting with Master Lane
+ xgkr->an_wait_count = 0;
+ if (xgkr->idx == MASTER_LANE) {
+ start_train = true;
+ }
+ else if (xgkr_inst->xgkr[xgkr->idx - 1].state == TRAINED) {
+ start_train = true;
+ }
+ } else {
+ //AN lost or not yet acquired
+ if (!is_link_up(phydev)) {
+ //Link is down: restart training
+ xgkr->an_wait_count = 0;
+ xgkr_request_restart_an(xgkr);
+ } else {
+ //Link is up: wait few iterations for AN to be acquired
+ if (xgkr->an_wait_count >= XGKR_AN_WAIT_ITERATIONS) {
+ xgkr->an_wait_count = 0;
+ xgkr_request_restart_an(xgkr);
+ } else {
+ xgkr->an_wait_count++;
+ }
+ }
+ }
+ break;
+ }
+ break;
+
+ case TRAINED:
+ if (!is_link_up(phydev)) {
+ switch (xgkr_inst->bp_mode)
+ {
+ case PHY_BACKPLANE_1000BASE_KX:
+ dev_err(&phydev->mdio.dev, "Wrong call path for 1000Base-KX \n");
+ break;
+
+ case PHY_BACKPLANE_10GBASE_KR:
+ dev_info(&phydev->mdio.dev, "Detect hotplug, restart training\n");
+ xgkr_request_restart_an(xgkr);
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ if (xgkr->idx == MASTER_LANE) {
+ //check if all lanes are trained only on Master Lane
+ all_lanes_trained = true;
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ if (xgkr_inst->xgkr[i].state != TRAINED) {
+ all_lanes_trained = false;
+ break;
+ }
+ }
+ if (all_lanes_trained) {
+ dev_info(&phydev->mdio.dev, "Detect hotplug, restart training\n");
+ xgkr_request_restart_an(xgkr);
+ }
+ }
+ break;
+ }
+ }
+ break;
+ }
+
+ if (start_train) {
+ xgkr_start_train(xgkr);
+ }
+
+ mutex_unlock(&phydev->lock);
+ start_xgkr_state_machine(&xgkr->xgkr_wk);
+}
+
+static int fsl_backplane_probe(struct phy_device *phydev)
+{
+ struct xgkr_phy_data *xgkr_inst;
+ struct device_node *phy_node, *lane_node;
+ struct resource res_lane;
+ struct serdes_access *srds = NULL;
+ int serdes_type;
+ const char *st;
+ const char *bm;
+ int ret, i, phy_lanes;
+ int bp_mode;
+ u32 lane_base_addr[MAX_PHY_LANES_NO], lane_memmap_size;
+
+ phy_node = phydev->mdio.dev.of_node;
+ if (!phy_node) {
+ dev_err(&phydev->mdio.dev, "No associated device tree node\n");
+ return -EINVAL;
+ }
+
+ bp_mode = of_property_read_string(phy_node, "backplane-mode", &bm);
+ if (bp_mode < 0)
+ return -EINVAL;
+
+ phy_lanes = 1;
+ if (!strcasecmp(bm, "1000base-kx")) {
+ bp_mode = PHY_BACKPLANE_1000BASE_KX;
+ } else if (!strcasecmp(bm, "10gbase-kr")) {
+ bp_mode = PHY_BACKPLANE_10GBASE_KR;
+ } else if (!strcasecmp(bm, "40gbase-kr")) {
+ bp_mode = PHY_BACKPLANE_40GBASE_KR;
+ phy_lanes = 4;
+ } else {
+ dev_err(&phydev->mdio.dev, "Unknown backplane-mode\n");
+ return -EINVAL;
+ }
+
+ lane_node = of_parse_phandle(phy_node, "fsl,lane-handle", 0);
+ if (!lane_node) {
+ dev_err(&phydev->mdio.dev, "parse fsl,lane-handle failed\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_string(lane_node, "compatible", &st);
+ if (ret < 0) {
+ //assume SERDES-10G if compatible property is not specified
+ serdes_type = SERDES_10G;
+ }
+ else if (!strcasecmp(st, "fsl,serdes-10g")) {
+ serdes_type = SERDES_10G;
+ } else if (!strcasecmp(st, "fsl,serdes-28g")) {
+ serdes_type = SERDES_28G;
+ } else {
+ dev_err(&phydev->mdio.dev, "Unknown serdes-type\n");
+ return -EINVAL;
+ }
+
+ ret = of_address_to_resource(lane_node, 0, &res_lane);
+ if (ret) {
+ dev_err(&phydev->mdio.dev, "could not obtain memory map\n");
+ return ret;
+ }
+
+ of_node_put(lane_node);
+ ret = of_property_read_u32_array(phy_node, "fsl,lane-reg",
+ (u32 *)lane_base_addr, phy_lanes);
+ if (ret) {
+ dev_err(&phydev->mdio.dev, "could not get fsl,lane-reg\n");
+ return -EINVAL;
+ }
+
+ switch (serdes_type)
+ {
+ case SERDES_10G:
+ setup_an_lt_ls();
+ srds = setup_serdes_access_10g();
+ break;
+
+ case SERDES_28G:
+ setup_an_lt_lx();
+ srds = setup_serdes_access_28g();
+ break;
+
+ default:
+ dev_err(&phydev->mdio.dev, "Unsupported serdes-type\n");
+ return -EINVAL;
+ }
+
+ if (!srds) {
+ dev_err(&phydev->mdio.dev, "Unsupported serdes-type\n");
+ return -EINVAL;
+ }
+
+ srds->serdes_type = serdes_type;
+ srds->is_little_endian = of_property_read_bool(lane_node, "little-endian");
+
+ if (srds->is_little_endian) {
+ srds->ioread32 = le_ioread32;
+ srds->iowrite32 = le_iowrite32;
+ } else {
+ srds->ioread32 = be_ioread32;
+ srds->iowrite32 = be_iowrite32;
+ }
+
+ xgkr_inst = devm_kzalloc(&phydev->mdio.dev,
+ sizeof(*xgkr_inst), GFP_KERNEL);
+ if (!xgkr_inst)
+ return -ENOMEM;
+
+ xgkr_inst->phy_lanes = phy_lanes;
+ xgkr_inst->bp_mode = bp_mode;
+ mutex_init(&xgkr_inst->phy_lock);
+
+ lane_memmap_size = srds->get_lane_memmap_size();
+
+ for (i = 0; i < phy_lanes; i++) {
+ xgkr_inst->xgkr[i].idx = i;
+ xgkr_inst->xgkr[i].phydev = phydev;
+ xgkr_inst->xgkr[i].srds = srds;
+ xgkr_inst->xgkr[i].reg_base = devm_ioremap_nocache(&phydev->mdio.dev,
+ res_lane.start + lane_base_addr[i],
+ lane_memmap_size);
+ if (!xgkr_inst->xgkr[i].reg_base) {
+ dev_err(&phydev->mdio.dev, "ioremap_nocache failed\n");
+ return -ENOMEM;
+ }
+ xgkr_inst->xgkr[i].rt_time = jiffies + msecs_to_jiffies(XGKR_DENY_RT_INTERVAL);
+ }
+
+ phydev->priv = xgkr_inst;
+
+ switch (bp_mode)
+ {
+ case PHY_BACKPLANE_1000BASE_KX:
+ phydev->speed = SPEED_1000;
+ /* configure the lane for 1000BASE-KX */
+ srds->lane_set_1gkx(xgkr_inst->xgkr[SINGLE_LANE].reg_base);
+ break;
+
+ case PHY_BACKPLANE_10GBASE_KR:
+ phydev->speed = SPEED_10000;
+ INIT_DELAYED_WORK(&xgkr_inst->xgkr[SINGLE_LANE].xgkr_wk, xgkr_state_machine);
+ break;
+
+ case PHY_BACKPLANE_40GBASE_KR:
+ phydev->speed = SPEED_40000;
+ for (i = 0; i < phy_lanes; i++)
+ INIT_DELAYED_WORK(&xgkr_inst->xgkr[i].xgkr_wk, xgkr_state_machine);
+ break;
+ }
+
+ return 0;
+}
+
+static int fsl_backplane_aneg_done(struct phy_device *phydev)
+{
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+
+ if (!phydev->mdio.dev.of_node) {
+ dev_err(&phydev->mdio.dev, "No associated device tree node\n");
+ return -EINVAL;
+ }
+
+ xgkr_inst->aneg_done = true;
+
+ return 1;
+}
+
+static int fsl_backplane_config_aneg(struct phy_device *phydev)
+{
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int i;
+
+ if (!phydev->mdio.dev.of_node) {
+ dev_err(&phydev->mdio.dev, "No associated device tree node\n");
+ return -EINVAL;
+ }
+
+ switch (phydev->speed)
+ {
+ case SPEED_1000:
+ phydev->supported |= SUPPORTED_1000baseKX_Full;
+ start_1gkx_an(phydev);
+ break;
+
+ case SPEED_10000:
+ phydev->supported |= SUPPORTED_10000baseKR_Full;
+ reset_lt(&xgkr_inst->xgkr[SINGLE_LANE]);
+ start_xgkr_an(&xgkr_inst->xgkr[SINGLE_LANE]);
+ /* start state machine*/
+ start_xgkr_state_machine(&xgkr_inst->xgkr[SINGLE_LANE].xgkr_wk);
+ break;
+
+ case SPEED_40000:
+ phydev->supported |= SUPPORTED_40000baseKR4_Full;
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ reset_lt(&xgkr_inst->xgkr[i]);
+ }
+ //Start AN only for Master Lane
+ start_xgkr_an(&xgkr_inst->xgkr[MASTER_LANE]);
+ /* start state machine*/
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ start_xgkr_state_machine(&xgkr_inst->xgkr[i].xgkr_wk);
+ }
+
+ break;
+ }
+
+ phydev->advertising = phydev->supported;
+ phydev->duplex = 1;
+
+ return 0;
+}
+
+static int fsl_backplane_suspend(struct phy_device *phydev)
+{
+ int i;
+
+ if (!phydev->mdio.dev.of_node) {
+ dev_err(&phydev->mdio.dev, "No associated device tree node\n");
+ return -EINVAL;
+ }
+
+ if (phydev->speed == SPEED_10000 || phydev->speed == SPEED_40000) {
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+
+ for (i = 0; i < xgkr_inst->phy_lanes; i++)
+ cancel_delayed_work_sync(&xgkr_inst->xgkr[i].xgkr_wk);
+ }
+ return 0;
+}
+
+static int fsl_backplane_resume(struct phy_device *phydev)
+{
+ struct xgkr_phy_data *xgkr_inst = phydev->priv;
+ int i;
+
+ if (!phydev->mdio.dev.of_node) {
+ dev_err(&phydev->mdio.dev, "No associated device tree node\n");
+ return -EINVAL;
+ }
+
+ if (phydev->speed == SPEED_10000 || phydev->speed == SPEED_40000) {
+ for (i = 0; i < xgkr_inst->phy_lanes; i++) {
+ init_xgkr(&xgkr_inst->xgkr[i], 1);
+ start_xgkr_state_machine(&xgkr_inst->xgkr[i].xgkr_wk);
+ }
+ }
+ return 0;
+}
+
+static int fsl_backplane_read_status(struct phy_device *phydev)
+{
+ if (!phydev->mdio.dev.of_node) {
+ dev_err(&phydev->mdio.dev, "No associated device tree node\n");
+ return -EINVAL;
+ }
+
+ if (is_link_up(phydev))
+ phydev->link = 1;
+ else
+ phydev->link = 0;
+
+ return 0;
+}
+
+static int fsl_backplane_match_phy_device(struct phy_device *phydev)
+{
+ struct device_node *phy_node, *lane_node;
+ const char *st;
+ int serdes_type, i, ret;
+ const int num_ids = ARRAY_SIZE(phydev->c45_ids.device_ids);
+
+ if (!phydev->mdio.dev.of_node) {
+ return 0;
+ }
+
+ // WORKAROUND:
+ // Required for LX2 devices
+ // where PHY ID cannot be verified in PCS
+ // because PCS Device Identifier Upper and Lower registers are hidden
+ // and always return 0 when they are read:
+ // 2 02 Device_ID0 RO Bits 15:0 0
+ // val = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x2);
+ // 3 03 Device_ID1 RO Bits 31:16 0
+ // val = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x3);
+ //
+ // To be removed: After the issue will be fixed on LX2 devices
+
+ if (!phydev->is_c45)
+ return 0;
+
+ phy_node = phydev->mdio.dev.of_node;
+
+ lane_node = of_parse_phandle(phy_node, "fsl,lane-handle", 0);
+ if (!lane_node) {
+ dev_err(&phydev->mdio.dev, "parse fsl,lane-handle failed\n");
+ return 0;
+ }
+
+ ret = of_property_read_string(lane_node, "compatible", &st);
+ if (ret < 0) {
+ //assume SERDES-10G if compatible property is not specified
+ serdes_type = SERDES_10G;
+ }
+ else if (!strcasecmp(st, "fsl,serdes-10g")) {
+ serdes_type = SERDES_10G;
+ } else if (!strcasecmp(st, "fsl,serdes-28g")) {
+ serdes_type = SERDES_28G;
+ } else {
+ dev_err(&phydev->mdio.dev, "Unknown serdes-type\n");
+ return 0;
+ }
+
+ if (serdes_type == SERDES_10G) {
+ //On LS devices we must find the c45 device with correct PHY ID
+ //Implementation similar with the one existent in phy_device: @function: phy_bus_match
+ for (i = 1; i < num_ids; i++) {
+ if (!(phydev->c45_ids.devices_in_package & (1 << i)))
+ continue;
+
+ if ((PCS_PHY_DEVICE_ID & PCS_PHY_DEVICE_ID_MASK) ==
+ (phydev->c45_ids.device_ids[i] & PCS_PHY_DEVICE_ID_MASK))
+ {
+ return 1;
+ }
+ }
+ return 0;
+ }
+
+ //On LX devices we cannot verify PHY ID
+ //so we are happy only with preliminary verifications already made: mdio.dev.of_node and is_c45
+ //because we already filtered other undesired devices: non clause 45
+
+ return 1;
+}
+
+static struct phy_driver fsl_backplane_driver[] = {
+ {
+ .phy_id = PCS_PHY_DEVICE_ID,
+ .name = "Freescale Backplane",
+ .phy_id_mask = PCS_PHY_DEVICE_ID_MASK,
+ .features = SUPPORTED_Backplane | SUPPORTED_Autoneg |
+ SUPPORTED_MII,
+ .probe = fsl_backplane_probe,
+ .aneg_done = fsl_backplane_aneg_done,
+ .config_aneg = fsl_backplane_config_aneg,
+ .read_status = fsl_backplane_read_status,
+ .suspend = fsl_backplane_suspend,
+ .resume = fsl_backplane_resume,
+ .match_phy_device = fsl_backplane_match_phy_device,
+ },
+};
+
+module_phy_driver(fsl_backplane_driver);
+
+static struct mdio_device_id __maybe_unused freescale_tbl[] = {
+ { PCS_PHY_DEVICE_ID, PCS_PHY_DEVICE_ID_MASK },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, freescale_tbl);
+
+MODULE_DESCRIPTION("Freescale Backplane driver");
+MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+++ b/drivers/net/phy/fsl_backplane.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * DPAA backplane driver.
+ * Author: Florinel Iordache <florinel.iordache@nxp.com>
+ *
+ * Copyright 2018 NXP
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef FSL_BACKPLANE_H
+#define FSL_BACKPLANE_H
+
+/* C(-1) */
+#define BIN_M1 0
+/* C(1) */
+#define BIN_LONG 1
+
+#define BIN_SNAPSHOT_NUM 5
+#define BIN_M1_THRESHOLD 3
+#define BIN_LONG_THRESHOLD 2
+
+struct serdes_access {
+
+ int serdes_type;
+ bool is_little_endian;
+ u32 (*ioread32)(u32 *reg);
+ void (*iowrite32)(u32 value, u32 *reg);
+ u32 (*get_lane_memmap_size)(void);
+ void (*tune_tecr)(void *reg, u32 ratio_preq, u32 ratio_pst1q, u32 adpt_eq, bool reset);
+ void (*reset_lane)(void *reg);
+ void (*lane_set_1gkx)(void *reg);
+ int (*get_median_gaink2)(u32 *reg);
+ bool (*is_bin_early)(int bin_sel, void *reg);
+};
+
+struct serdes_access* setup_serdes_access_10g(void);
+struct serdes_access* setup_serdes_access_28g(void);
+
+
+#endif //FSL_BACKPLANE_H
--- /dev/null
+++ b/drivers/net/phy/fsl_backplane_serdes_10g.c
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DPAA backplane driver for SerDes 10G.
+ * Author: Florinel Iordache <florinel.iordache@nxp.com>
+ *
+ * Copyright 2018 NXP
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/io.h>
+#include <linux/delay.h>
+
+#include "fsl_backplane.h"
+
+#define BIN_M1_SEL 6
+#define BIN_Long_SEL 7
+#define CDR_SEL_MASK 0x00070000
+
+#define PRE_COE_SHIFT 22
+#define POST_COE_SHIFT 16
+#define ZERO_COE_SHIFT 8
+
+#define TECR0_INIT 0x24200000
+
+#define GCR0_RESET_MASK 0x00600000
+
+#define GCR1_SNP_START_MASK 0x00000040
+#define GCR1_CTL_SNP_START_MASK 0x00002000
+
+#define RECR1_CTL_SNP_DONE_MASK 0x00000002
+#define RECR1_SNP_DONE_MASK 0x00000004
+#define TCSR1_SNP_DATA_MASK 0x0000ffc0
+#define TCSR1_SNP_DATA_SHIFT 6
+#define TCSR1_EQ_SNPBIN_SIGN_MASK 0x100
+
+#define RECR1_GAINK2_MASK 0x0f000000
+#define RECR1_GAINK2_SHIFT 24
+
+/* Required only for 1000BASE KX */
+#define GCR1_REIDL_TH_MASK 0x00700000
+#define GCR1_REIDL_EX_SEL_MASK 0x000c0000
+#define GCR1_REIDL_ET_MAS_MASK 0x00004000
+#define TECR0_AMP_RED_MASK 0x0000003f
+
+struct per_lane_ctrl_status {
+ u32 gcr0; /* 0x.000 - General Control Register 0 */
+ u32 gcr1; /* 0x.004 - General Control Register 1 */
+ u32 gcr2; /* 0x.008 - General Control Register 2 */
+ u32 resv1; /* 0x.00C - Reserved */
+ u32 recr0; /* 0x.010 - Receive Equalization Control Register 0 */
+ u32 recr1; /* 0x.014 - Receive Equalization Control Register 1 */
+ u32 tecr0; /* 0x.018 - Transmit Equalization Control Register 0 */
+ u32 resv2; /* 0x.01C - Reserved */
+ u32 tlcr0; /* 0x.020 - TTL Control Register 0 */
+ u32 tlcr1; /* 0x.024 - TTL Control Register 1 */
+ u32 tlcr2; /* 0x.028 - TTL Control Register 2 */
+ u32 tlcr3; /* 0x.02C - TTL Control Register 3 */
+ u32 tcsr0; /* 0x.030 - Test Control/Status Register 0 */
+ u32 tcsr1; /* 0x.034 - Test Control/Status Register 1 */
+ u32 tcsr2; /* 0x.038 - Test Control/Status Register 2 */
+ u32 tcsr3; /* 0x.03C - Test Control/Status Register 3 */
+};
+
+static struct serdes_access srds;
+
+static u32 get_lane_memmap_size(void)
+{
+ return 0x40;
+}
+
+static void reset_lane(void *reg)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+
+ /* reset the lane */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr0) & ~GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+
+ /* unreset the lane */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr0) | GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+}
+
+static void tune_tecr(void *reg, u32 ratio_preq, u32 ratio_pst1q, u32 adpt_eq, bool reset)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+ u32 val;
+
+ val = TECR0_INIT |
+ adpt_eq << ZERO_COE_SHIFT |
+ ratio_preq << PRE_COE_SHIFT |
+ ratio_pst1q << POST_COE_SHIFT;
+
+ if (reset) {
+ /* reset the lane */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr0) & ~GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+ }
+
+ srds.iowrite32(val, &reg_base->tecr0);
+ udelay(1);
+
+ if (reset) {
+ /* unreset the lane */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr0) | GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+ }
+}
+
+static void lane_set_1gkx(void *reg)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+ u32 val;
+
+ /* reset the lane */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr0) & ~GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+
+ /* set gcr1 for 1GKX */
+ val = srds.ioread32(&reg_base->gcr1);
+ val &= ~(GCR1_REIDL_TH_MASK | GCR1_REIDL_EX_SEL_MASK |
+ GCR1_REIDL_ET_MAS_MASK);
+ srds.iowrite32(val, &reg_base->gcr1);
+ udelay(1);
+
+ /* set tecr0 for 1GKX */
+ val = srds.ioread32(&reg_base->tecr0);
+ val &= ~TECR0_AMP_RED_MASK;
+ srds.iowrite32(val, &reg_base->tecr0);
+ udelay(1);
+
+ /* unreset the lane */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr0) | GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+}
+
+static int get_median_gaink2(u32 *reg)
+{
+ int gaink2_snap_shot[BIN_SNAPSHOT_NUM];
+ u32 rx_eq_snp;
+ struct per_lane_ctrl_status *reg_base;
+ int timeout;
+ int i, j, tmp, pos;
+
+ reg_base = (struct per_lane_ctrl_status *)reg;
+
+ for (i = 0; i < BIN_SNAPSHOT_NUM; i++) {
+ /* wait RECR1_CTL_SNP_DONE_MASK has cleared */
+ timeout = 100;
+ while (srds.ioread32(&reg_base->recr1) &
+ RECR1_CTL_SNP_DONE_MASK) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* start snap shot */
+ srds.iowrite32((srds.ioread32(&reg_base->gcr1) |
+ GCR1_CTL_SNP_START_MASK),
+ &reg_base->gcr1);
+
+ /* wait for SNP done */
+ timeout = 100;
+ while (!(srds.ioread32(&reg_base->recr1) &
+ RECR1_CTL_SNP_DONE_MASK)) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* read and save the snap shot */
+ rx_eq_snp = srds.ioread32(&reg_base->recr1);
+ gaink2_snap_shot[i] = (rx_eq_snp & RECR1_GAINK2_MASK) >>
+ RECR1_GAINK2_SHIFT;
+
+ /* terminate the snap shot by setting GCR1[REQ_CTL_SNP] */
+ srds.iowrite32((srds.ioread32(&reg_base->gcr1) &
+ ~GCR1_CTL_SNP_START_MASK),
+ &reg_base->gcr1);
+ }
+
+ /* get median of the 5 snap shot */
+ for (i = 0; i < BIN_SNAPSHOT_NUM - 1; i++) {
+ tmp = gaink2_snap_shot[i];
+ pos = i;
+ for (j = i + 1; j < BIN_SNAPSHOT_NUM; j++) {
+ if (gaink2_snap_shot[j] < tmp) {
+ tmp = gaink2_snap_shot[j];
+ pos = j;
+ }
+ }
+
+ gaink2_snap_shot[pos] = gaink2_snap_shot[i];
+ gaink2_snap_shot[i] = tmp;
+ }
+
+ return gaink2_snap_shot[2];
+}
+
+static bool is_bin_early(int bin_sel, void *reg)
+{
+ bool early = false;
+ int bin_snap_shot[BIN_SNAPSHOT_NUM];
+ int i, negative_count = 0;
+ struct per_lane_ctrl_status *reg_base = reg;
+ int timeout;
+
+ for (i = 0; i < BIN_SNAPSHOT_NUM; i++) {
+ /* wait RECR1_SNP_DONE_MASK has cleared */
+ timeout = 100;
+ while ((srds.ioread32(&reg_base->recr1) & RECR1_SNP_DONE_MASK)) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* set TCSR1[CDR_SEL] to BinM1/BinLong */
+ if (bin_sel == BIN_M1) {
+ srds.iowrite32((srds.ioread32(&reg_base->tcsr1) &
+ ~CDR_SEL_MASK) | BIN_M1_SEL,
+ &reg_base->tcsr1);
+ } else {
+ srds.iowrite32((srds.ioread32(&reg_base->tcsr1) &
+ ~CDR_SEL_MASK) | BIN_Long_SEL,
+ &reg_base->tcsr1);
+ }
+
+ /* start snap shot */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr1) | GCR1_SNP_START_MASK,
+ &reg_base->gcr1);
+
+ /* wait for SNP done */
+ timeout = 100;
+ while (!(srds.ioread32(&reg_base->recr1) & RECR1_SNP_DONE_MASK)) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* read and save the snap shot */
+ bin_snap_shot[i] = (srds.ioread32(&reg_base->tcsr1) &
+ TCSR1_SNP_DATA_MASK) >> TCSR1_SNP_DATA_SHIFT;
+ if (bin_snap_shot[i] & TCSR1_EQ_SNPBIN_SIGN_MASK)
+ negative_count++;
+
+ /* terminate the snap shot by setting GCR1[REQ_CTL_SNP] */
+ srds.iowrite32(srds.ioread32(&reg_base->gcr1) & ~GCR1_SNP_START_MASK,
+ &reg_base->gcr1);
+ }
+
+ if (((bin_sel == BIN_M1) && (negative_count > BIN_M1_THRESHOLD)) ||
+ ((bin_sel == BIN_LONG && (negative_count > BIN_LONG_THRESHOLD)))) {
+ early = true;
+ }
+
+ return early;
+}
+
+struct serdes_access* setup_serdes_access_10g(void)
+{
+ srds.get_lane_memmap_size = get_lane_memmap_size;
+ srds.tune_tecr = tune_tecr;
+ srds.reset_lane = reset_lane;
+ srds.lane_set_1gkx = lane_set_1gkx;
+ srds.get_median_gaink2 = get_median_gaink2;
+ srds.is_bin_early = is_bin_early;
+
+ return &srds;
+}
+
--- /dev/null
+++ b/drivers/net/phy/fsl_backplane_serdes_28g.c
@@ -0,0 +1,336 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DPAA backplane driver for SerDes 28G.
+ * Author: Florinel Iordache <florinel.iordache@nxp.com>
+ *
+ * Copyright 2018 NXP
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+#include "fsl_backplane.h"
+
+#define BIN_M1_SEL 0x0000c000
+#define BIN_Long_SEL 0x0000d000
+#define CDR_SEL_MASK 0x0000f000
+
+#define PRE_COE_SHIFT 16
+#define POST_COE_SHIFT 8
+#define ZERO_COE_SHIFT 24
+
+#define TECR0_INIT 0x20808000
+
+#define RESET_REQ_MASK 0x80000000
+
+#define RECR3_SNP_START_MASK 0x80000000
+#define RECR3_SNP_DONE_MASK 0x40000000
+
+#define RECR4_SNP_DATA_MASK 0x000003ff
+#define RECR4_SNP_DATA_SHIFT 0
+#define RECR4_EQ_SNPBIN_SIGN_MASK 0x200
+
+#define RECR3_GAINK2_MASK 0x1f000000
+#define RECR3_GAINK2_SHIFT 24
+
+/* Required only for 1000BASE KX */
+#define GCR1_REIDL_TH_MASK 0x00700000
+#define GCR1_REIDL_EX_SEL_MASK 0x000c0000
+#define GCR1_REIDL_ET_MAS_MASK 0x04000000
+#define TECR0_AMP_RED_MASK 0x0000003f
+
+struct per_lane_ctrl_status {
+ u32 gcr0; /* 0x.000 - General Control Register 0 */
+ u32 resv1; /* 0x.004 - Reserved */
+ u32 resv2; /* 0x.008 - Reserved */
+ u32 resv3; /* 0x.00C - Reserved */
+ u32 resv4; /* 0x.010 - Reserved */
+ u32 resv5; /* 0x.014 - Reserved */
+ u32 resv6; /* 0x.018 - Reserved */
+ u32 resv7; /* 0x.01C - Reserved */
+ u32 trstctl; /* 0x.020 - TX Reset Control Register */
+ u32 tgcr0; /* 0x.024 - TX General Control Register 0 */
+ u32 tgcr1; /* 0x.028 - TX General Control Register 1 */
+ u32 tgcr2; /* 0x.02C - TX General Control Register 2 */
+ u32 tecr0; /* 0x.030 - Transmit Equalization Control Register 0 */
+ u32 tecr1; /* 0x.034 - Transmit Equalization Control Register 1 */
+ u32 resv8; /* 0x.038 - Reserved */
+ u32 resv9; /* 0x.03C - Reserved */
+ u32 rrstctl; /* 0x.040 - RX Reset Control Register */
+ u32 rgcr0; /* 0x.044 - RX General Control Register 0 */
+ u32 rxgcr1; /* 0x.048 - RX General Control Register 1 */
+ u32 resv10; /* 0x.04C - Reserved */
+ u32 recr0; /* 0x.050 - RX Equalization Register 0 */
+ u32 recr1; /* 0x.054 - RX Equalization Register 1 */
+ u32 recr2; /* 0x.058 - RX Equalization Register 2 */
+ u32 recr3; /* 0x.05C - RX Equalization Register 3 */
+ u32 recr4; /* 0x.060 - RX Equalization Register 4 */
+ u32 resv11; /* 0x.064 - Reserved */
+ u32 rccr0; /* 0x.068 - RX Calibration Register 0 */
+ u32 rccr1; /* 0x.06C - RX Calibration Register 1 */
+ u32 rcpcr0; /* 0x.070 - RX Clock Path Register 0 */
+ u32 rsccr0; /* 0x.074 - RX Sampler Calibration Control Register 0 */
+ u32 rsccr1; /* 0x.078 - RX Sampler Calibration Control Register 1 */
+ u32 resv12; /* 0x.07C - Reserved */
+ u32 ttlcr0; /* 0x.080 - Transition Tracking Loop Register 0 */
+ u32 ttlcr1; /* 0x.084 - Transition Tracking Loop Register 1 */
+ u32 ttlcr2; /* 0x.088 - Transition Tracking Loop Register 2 */
+ u32 ttlcr3; /* 0x.08C - Transition Tracking Loop Register 3 */
+ u32 resv13; /* 0x.090 - Reserved */
+ u32 resv14; /* 0x.094 - Reserved */
+ u32 resv15; /* 0x.098 - Reserved */
+ u32 resv16; /* 0x.09C - Reserved */
+ u32 tcsr0; /* 0x.0A0 - Test Control/Status Register 0 */
+ u32 tcsr1; /* 0x.0A4 - Test Control/Status Register 1 */
+ u32 tcsr2; /* 0x.0A8 - Test Control/Status Register 2 */
+ u32 tcsr3; /* 0x.0AC - Test Control/Status Register 3 */
+ u32 tcsr4; /* 0x.0B0 - Test Control/Status Register 4 */
+ u32 resv17; /* 0x.0B4 - Reserved */
+ u32 resv18; /* 0x.0B8 - Reserved */
+ u32 resv19; /* 0x.0BC - Reserved */
+ u32 rxcb0; /* 0x.0C0 - RX Control Block Register 0 */
+ u32 rxcb1; /* 0x.0C4 - RX Control Block Register 1 */
+ u32 resv20; /* 0x.0C8 - Reserved */
+ u32 resv21; /* 0x.0CC - Reserved */
+ u32 rxss0; /* 0x.0D0 - RX Speed Switch Register 0 */
+ u32 rxss1; /* 0x.0D4 - RX Speed Switch Register 1 */
+ u32 rxss2; /* 0x.0D8 - RX Speed Switch Register 2 */
+ u32 resv22; /* 0x.0DC - Reserved */
+ u32 txcb0; /* 0x.0E0 - TX Control Block Register 0 */
+ u32 txcb1; /* 0x.0E4 - TX Control Block Register 1 */
+ u32 resv23; /* 0x.0E8 - Reserved */
+ u32 resv24; /* 0x.0EC - Reserved */
+ u32 txss0; /* 0x.0F0 - TX Speed Switch Register 0 */
+ u32 txss1; /* 0x.0F4 - TX Speed Switch Register 1 */
+ u32 txss2; /* 0x.0F8 - TX Speed Switch Register 2 */
+ u32 resv25; /* 0x.0FC - Reserved */
+};
+
+static struct serdes_access srds;
+
+static u32 get_lane_memmap_size(void)
+{
+ return 0x100;
+}
+
+static void reset_lane(void *reg)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+ u32 val;
+ unsigned long timeout;
+
+ /* reset Tx lane: send reset request */
+ srds.iowrite32(srds.ioread32(&reg_base->trstctl) | RESET_REQ_MASK,
+ &reg_base->trstctl);
+ udelay(1);
+ timeout = 10;
+ while (timeout--) {
+ val = srds.ioread32(&reg_base->trstctl);
+ if (!(val & RESET_REQ_MASK))
+ break;
+ usleep_range(5, 20);
+ }
+
+ /* reset Rx lane: send reset request */
+ srds.iowrite32(srds.ioread32(&reg_base->rrstctl) | RESET_REQ_MASK,
+ &reg_base->rrstctl);
+ udelay(1);
+ timeout = 10;
+ while (timeout--) {
+ val = srds.ioread32(&reg_base->rrstctl);
+ if (!(val & RESET_REQ_MASK))
+ break;
+ usleep_range(5, 20);
+ }
+
+ /* wait for a while after reset */
+ timeout = jiffies + 10;
+ while (time_before(jiffies, timeout)) {
+ schedule();
+ usleep_range(5, 20);
+ }
+}
+
+static void tune_tecr(void *reg, u32 ratio_preq, u32 ratio_pst1q, u32 adpt_eq, bool reset)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+ u32 val;
+
+ if (reset) {
+ /* reset lanes */
+ reset_lane(reg);
+ }
+
+ val = TECR0_INIT |
+ ratio_preq << PRE_COE_SHIFT |
+ ratio_pst1q << POST_COE_SHIFT;
+ srds.iowrite32(val, &reg_base->tecr0);
+
+ val = adpt_eq << ZERO_COE_SHIFT;
+ srds.iowrite32(val, &reg_base->tecr1);
+
+ udelay(1);
+}
+
+static void lane_set_1gkx(void *reg)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+ u32 val;
+
+ /* reset lanes */
+ reset_lane(reg);
+
+ /* set gcr1 for 1GKX */
+ val = srds.ioread32(&reg_base->rxgcr1);
+ val &= ~(GCR1_REIDL_TH_MASK | GCR1_REIDL_EX_SEL_MASK |
+ GCR1_REIDL_ET_MAS_MASK);
+ srds.iowrite32(val, &reg_base->rxgcr1);
+ udelay(1);
+
+ /* set tecr0 for 1GKX */
+ val = srds.ioread32(&reg_base->tecr0);
+ val &= ~TECR0_AMP_RED_MASK;
+ srds.iowrite32(val, &reg_base->tecr0);
+ udelay(1);
+}
+
+static int get_median_gaink2(u32 *reg)
+{
+ int gaink2_snap_shot[BIN_SNAPSHOT_NUM];
+ u32 rx_eq_snp;
+ struct per_lane_ctrl_status *reg_base;
+ int timeout;
+ int i, j, tmp, pos;
+
+ reg_base = (struct per_lane_ctrl_status *)reg;
+
+ for (i = 0; i < BIN_SNAPSHOT_NUM; i++) {
+ /* wait RECR3_SNP_DONE_MASK has cleared */
+ timeout = 100;
+ while (srds.ioread32(&reg_base->recr3) &
+ RECR3_SNP_DONE_MASK) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* start snap shot */
+ srds.iowrite32((srds.ioread32(&reg_base->recr3) |
+ RECR3_SNP_START_MASK),
+ &reg_base->recr3);
+
+ /* wait for SNP done */
+ timeout = 100;
+ while (!(srds.ioread32(&reg_base->recr3) &
+ RECR3_SNP_DONE_MASK)) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* read and save the snap shot */
+ rx_eq_snp = srds.ioread32(&reg_base->recr3);
+ gaink2_snap_shot[i] = (rx_eq_snp & RECR3_GAINK2_MASK) >>
+ RECR3_GAINK2_SHIFT;
+
+ /* terminate the snap shot by setting GCR1[REQ_CTL_SNP] */
+ srds.iowrite32((srds.ioread32(&reg_base->recr3) &
+ ~RECR3_SNP_START_MASK),
+ &reg_base->recr3);
+ }
+
+ /* get median of the 5 snap shot */
+ for (i = 0; i < BIN_SNAPSHOT_NUM - 1; i++) {
+ tmp = gaink2_snap_shot[i];
+ pos = i;
+ for (j = i + 1; j < BIN_SNAPSHOT_NUM; j++) {
+ if (gaink2_snap_shot[j] < tmp) {
+ tmp = gaink2_snap_shot[j];
+ pos = j;
+ }
+ }
+
+ gaink2_snap_shot[pos] = gaink2_snap_shot[i];
+ gaink2_snap_shot[i] = tmp;
+ }
+
+ return gaink2_snap_shot[2];
+}
+
+static bool is_bin_early(int bin_sel, void *reg)
+{
+ bool early = false;
+ int bin_snap_shot[BIN_SNAPSHOT_NUM];
+ int i, negative_count = 0;
+ struct per_lane_ctrl_status *reg_base = reg;
+ int timeout;
+
+ for (i = 0; i < BIN_SNAPSHOT_NUM; i++) {
+ /* wait RECR3_SNP_DONE_MASK has cleared */
+ timeout = 100;
+ while ((srds.ioread32(&reg_base->recr3) & RECR3_SNP_DONE_MASK)) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* set TCSR1[CDR_SEL] to BinM1/BinLong */
+ if (bin_sel == BIN_M1) {
+ srds.iowrite32((srds.ioread32(&reg_base->recr4) &
+ ~CDR_SEL_MASK) | BIN_M1_SEL,
+ &reg_base->recr4);
+ } else {
+ srds.iowrite32((srds.ioread32(&reg_base->recr4) &
+ ~CDR_SEL_MASK) | BIN_Long_SEL,
+ &reg_base->recr4);
+ }
+
+ /* start snap shot */
+ srds.iowrite32(srds.ioread32(&reg_base->recr3) | RECR3_SNP_START_MASK,
+ &reg_base->recr3);
+
+ /* wait for SNP done */
+ timeout = 100;
+ while (!(srds.ioread32(&reg_base->recr3) & RECR3_SNP_DONE_MASK)) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* read and save the snap shot */
+ bin_snap_shot[i] = (srds.ioread32(&reg_base->recr4) &
+ RECR4_SNP_DATA_MASK) >> RECR4_SNP_DATA_SHIFT;
+ if (bin_snap_shot[i] & RECR4_EQ_SNPBIN_SIGN_MASK)
+ negative_count++;
+
+ /* terminate the snap shot by setting GCR1[REQ_CTL_SNP] */
+ srds.iowrite32(srds.ioread32(&reg_base->recr3) & ~RECR3_SNP_START_MASK,
+ &reg_base->recr3);
+ }
+
+ if (((bin_sel == BIN_M1) && (negative_count > BIN_M1_THRESHOLD)) ||
+ ((bin_sel == BIN_LONG && (negative_count > BIN_LONG_THRESHOLD)))) {
+ early = true;
+ }
+
+ return early;
+}
+
+struct serdes_access* setup_serdes_access_28g(void)
+{
+ srds.get_lane_memmap_size = get_lane_memmap_size;
+ srds.tune_tecr = tune_tecr;
+ srds.reset_lane = reset_lane;
+ srds.lane_set_1gkx = lane_set_1gkx;
+ srds.get_median_gaink2 = get_median_gaink2;
+ srds.is_bin_early = is_bin_early;
+
+ return &srds;
+}
--- /dev/null
+++ b/drivers/net/phy/inphi.c
@@ -0,0 +1,594 @@
+/*
+ * Copyright 2018 NXP
+ * Copyright 2018 INPHI
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Inphi is a registered trademark of Inphi Corporation
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/mdio.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/of_irq.h>
+#include <linux/workqueue.h>
+#include <linux/i2c.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#define PHY_ID_IN112525 0x02107440
+
+#define INPHI_S03_DEVICE_ID_MSB 0x2
+#define INPHI_S03_DEVICE_ID_LSB 0x3
+
+#define ALL_LANES 4
+#define INPHI_POLL_DELAY 2500
+
+#define PHYCTRL_REG1 0x0012
+#define PHYCTRL_REG2 0x0014
+#define PHYCTRL_REG3 0x0120
+#define PHYCTRL_REG4 0x0121
+#define PHYCTRL_REG5 0x0180
+#define PHYCTRL_REG6 0x0580
+#define PHYCTRL_REG7 0x05C4
+#define PHYCTRL_REG8 0x01C8
+#define PHYCTRL_REG9 0x0521
+
+#define PHYSTAT_REG1 0x0021
+#define PHYSTAT_REG2 0x0022
+#define PHYSTAT_REG3 0x0123
+
+#define PHYMISC_REG1 0x0025
+#define PHYMISC_REG2 0x002c
+#define PHYMISC_REG3 0x00b3
+#define PHYMISC_REG4 0x0181
+#define PHYMISC_REG5 0x019D
+#define PHYMISC_REG6 0x0198
+#define PHYMISC_REG7 0x0199
+#define PHYMISC_REG8 0x0581
+#define PHYMISC_REG9 0x0598
+#define PHYMISC_REG10 0x059c
+#define PHYMISC_REG20 0x01B0
+#define PHYMISC_REG21 0x01BC
+#define PHYMISC_REG22 0x01C0
+
+#define RX_VCO_CODE_OFFSET 5
+#define VCO_CODE 390
+
+int vco_codes[ALL_LANES] = {
+ VCO_CODE,
+ VCO_CODE,
+ VCO_CODE,
+ VCO_CODE
+};
+
+static void mykmod_work_handler(struct work_struct *w);
+
+static struct workqueue_struct *wq;
+static DECLARE_DELAYED_WORK(mykmod_work, mykmod_work_handler);
+static unsigned long onesec;
+struct phy_device *inphi_phydev;
+
+static int mdio_wr(u32 regnum, u16 val)
+{
+ regnum = MII_ADDR_C45 | (MDIO_MMD_VEND1 << 16) | (regnum & 0xffff);
+
+ return mdiobus_write(inphi_phydev->mdio.bus, inphi_phydev->mdio.addr,
+ regnum, val);
+}
+
+static int mdio_rd(u32 regnum)
+{
+ regnum = MII_ADDR_C45 | (MDIO_MMD_VEND1 << 16) | (regnum & 0xffff);
+
+ return mdiobus_read(inphi_phydev->mdio.bus, inphi_phydev->mdio.addr,
+ regnum);
+}
+
+
+int bit_test(int value, int bit_field)
+{
+ int result;
+ int bit_mask = (1 << bit_field);
+
+ result = ((value & bit_mask) == bit_mask);
+ return result;
+}
+
+int tx_pll_lock_test(int lane)
+{
+ int i, val, locked = 1;
+
+ if (lane == ALL_LANES) {
+ for (i = 0; i < ALL_LANES; i++) {
+ val = mdio_rd(i * 0x100 + PHYSTAT_REG3);
+ locked = locked & bit_test(val, 15);
+ }
+ } else {
+ val = mdio_rd(lane * 0x100 + PHYSTAT_REG3);
+ locked = locked & bit_test(val, 15);
+ }
+
+ return locked;
+}
+
+void rx_reset_assert(int lane)
+{
+ int mask, val;
+
+ if (lane == ALL_LANES) {
+ val = mdio_rd(PHYMISC_REG2);
+ mask = (1 << 15);
+ mdio_wr(PHYMISC_REG2, val + mask);
+ } else {
+ val = mdio_rd(lane * 0x100 + PHYCTRL_REG8);
+ mask = (1 << 6);
+ mdio_wr(lane * 0x100 + PHYCTRL_REG8, val + mask);
+ }
+}
+
+void rx_reset_de_assert(int lane)
+{
+ int mask, val;
+
+ if (lane == ALL_LANES) {
+ val = mdio_rd(PHYMISC_REG2);
+ mask = 0xffff - (1 << 15);
+ mdio_wr(PHYMISC_REG2, val & mask);
+ } else {
+ val = mdio_rd(lane * 0x100 + PHYCTRL_REG8);
+ mask = 0xffff - (1 << 6);
+ mdio_wr(lane * 0x100 + PHYCTRL_REG8, val & mask);
+ }
+}
+
+void rx_powerdown_assert(int lane)
+{
+ int mask, val;
+
+ val = mdio_rd(lane * 0x100 + PHYCTRL_REG8);
+ mask = (1 << 5);
+ mdio_wr(lane * 0x100 + PHYCTRL_REG8, val + mask);
+}
+
+void rx_powerdown_de_assert(int lane)
+{
+ int mask, val;
+
+ val = mdio_rd(lane * 0x100 + PHYCTRL_REG8);
+ mask = 0xffff - (1 << 5);
+ mdio_wr(lane * 0x100 + PHYCTRL_REG8, val & mask);
+}
+
+void tx_pll_assert(int lane)
+{
+ int val, recal;
+
+ if (lane == ALL_LANES) {
+ val = mdio_rd(PHYMISC_REG2);
+ recal = (1 << 12);
+ mdio_wr(PHYMISC_REG2, val | recal);
+ } else {
+ val = mdio_rd(lane * 0x100 + PHYCTRL_REG4);
+ recal = (1 << 15);
+ mdio_wr(lane * 0x100 + PHYCTRL_REG4, val | recal);
+ }
+}
+
+void tx_pll_de_assert(int lane)
+{
+ int recal, val;
+
+ if (lane == ALL_LANES) {
+ val = mdio_rd(PHYMISC_REG2);
+ recal = 0xefff;
+ mdio_wr(PHYMISC_REG2, val & recal);
+ } else {
+ val = mdio_rd(lane * 0x100 + PHYCTRL_REG4);
+ recal = 0x7fff;
+ mdio_wr(lane * 0x100 + PHYCTRL_REG4, val & recal);
+ }
+}
+
+void tx_core_assert(int lane)
+{
+ int recal, val, val2, core_reset;
+
+ if (lane == 4) {
+ val = mdio_rd(PHYMISC_REG2);
+ recal = 1 << 10;
+ mdio_wr(PHYMISC_REG2, val | recal);
+ } else {
+ val2 = mdio_rd(PHYMISC_REG3);
+ core_reset = (1 << (lane + 8));
+ mdio_wr(PHYMISC_REG3, val2 | core_reset);
+ }
+}
+
+void lol_disable(int lane)
+{
+ int val, mask;
+
+ val = mdio_rd(PHYMISC_REG3);
+ mask = 1 << (lane + 4);
+ mdio_wr(PHYMISC_REG3, val | mask);
+}
+
+void tx_core_de_assert(int lane)
+{
+ int val, recal, val2, core_reset;
+
+ if (lane == ALL_LANES) {
+ val = mdio_rd(PHYMISC_REG2);
+ recal = 0xffff - (1 << 10);
+ mdio_wr(PHYMISC_REG2, val & recal);
+ } else {
+ val2 = mdio_rd(PHYMISC_REG3);
+ core_reset = 0xffff - (1 << (lane + 8));
+ mdio_wr(PHYMISC_REG3, val2 & core_reset);
+ }
+}
+
+void tx_restart(int lane)
+{
+ tx_core_assert(lane);
+ tx_pll_assert(lane);
+ tx_pll_de_assert(lane);
+ usleep_range(1500, 1600);
+ tx_core_de_assert(lane);
+}
+
+void disable_lane(int lane)
+{
+ rx_reset_assert(lane);
+ rx_powerdown_assert(lane);
+ tx_core_assert(lane);
+ lol_disable(lane);
+}
+
+void toggle_reset(int lane)
+{
+ int reg, val, orig;
+
+ if (lane == ALL_LANES) {
+ mdio_wr(PHYMISC_REG2, 0x8000);
+ udelay(100);
+ mdio_wr(PHYMISC_REG2, 0x0000);
+ } else {
+ reg = lane * 0x100 + PHYCTRL_REG8;
+ val = (1 << 6);
+ orig = mdio_rd(reg);
+ mdio_wr(reg, orig + val);
+ udelay(100);
+ mdio_wr(reg, orig);
+ }
+}
+
+int az_complete_test(int lane)
+{
+ int success = 1, value;
+
+ if (lane == 0 || lane == ALL_LANES) {
+ value = mdio_rd(PHYCTRL_REG5);
+ success = success & bit_test(value, 2);
+ }
+ if (lane == 1 || lane == ALL_LANES) {
+ value = mdio_rd(PHYCTRL_REG5 + 0x100);
+ success = success & bit_test(value, 2);
+ }
+ if (lane == 2 || lane == ALL_LANES) {
+ value = mdio_rd(PHYCTRL_REG5 + 0x200);
+ success = success & bit_test(value, 2);
+ }
+ if (lane == 3 || lane == ALL_LANES) {
+ value = mdio_rd(PHYCTRL_REG5 + 0x300);
+ success = success & bit_test(value, 2);
+ }
+
+ return success;
+}
+
+void save_az_offsets(int lane)
+{
+ int i;
+
+#define AZ_OFFSET_LANE_UPDATE(reg, lane) \
+ mdio_wr((reg) + (lane) * 0x100, \
+ (mdio_rd((reg) + (lane) * 0x100) >> 8))
+
+ if (lane == ALL_LANES) {
+ for (i = 0; i < ALL_LANES; i++) {
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20 + 1, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20 + 2, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20 + 3, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21 + 1, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21 + 2, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21 + 3, i);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG22, i);
+ }
+ } else {
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20 + 1, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20 + 2, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG20 + 3, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21 + 1, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21 + 2, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG21 + 3, lane);
+ AZ_OFFSET_LANE_UPDATE(PHYMISC_REG22, lane);
+ }
+
+ mdio_wr(PHYCTRL_REG7, 0x0001);
+}
+
+void save_vco_codes(int lane)
+{
+ int i;
+
+ if (lane == ALL_LANES) {
+ for (i = 0; i < ALL_LANES; i++) {
+ vco_codes[i] = mdio_rd(PHYMISC_REG5 + i * 0x100);
+ mdio_wr(PHYMISC_REG5 + i * 0x100,
+ vco_codes[i] + RX_VCO_CODE_OFFSET);
+ }
+ } else {
+ vco_codes[lane] = mdio_rd(PHYMISC_REG5 + lane * 0x100);
+ mdio_wr(PHYMISC_REG5 + lane * 0x100,
+ vco_codes[lane] + RX_VCO_CODE_OFFSET);
+ }
+}
+
+int inphi_lane_recovery(int lane)
+{
+ int i, value, az_pass;
+
+ switch (lane) {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ rx_reset_assert(lane);
+ mdelay(20);
+ break;
+ case ALL_LANES:
+ mdio_wr(PHYMISC_REG2, 0x9C00);
+ mdelay(20);
+ do {
+ value = mdio_rd(PHYMISC_REG2);
+ udelay(10);
+ } while (!bit_test(value, 4));
+ break;
+ default:
+ dev_err(&inphi_phydev->mdio.dev,
+ "Incorrect usage of APIs in %s driver\n",
+ inphi_phydev->drv->name);
+ break;
+ }
+
+ if (lane == ALL_LANES) {
+ for (i = 0; i < ALL_LANES; i++)
+ mdio_wr(PHYMISC_REG7 + i * 0x100, VCO_CODE);
+ } else {
+ mdio_wr(PHYMISC_REG7 + lane * 0x100, VCO_CODE);
+ }
+
+ if (lane == ALL_LANES)
+ for (i = 0; i < ALL_LANES; i++)
+ mdio_wr(PHYCTRL_REG5 + i * 0x100, 0x0418);
+ else
+ mdio_wr(PHYCTRL_REG5 + lane * 0x100, 0x0418);
+
+ mdio_wr(PHYCTRL_REG7, 0x0000);
+
+ rx_reset_de_assert(lane);
+
+ if (lane == ALL_LANES) {
+ for (i = 0; i < ALL_LANES; i++) {
+ mdio_wr(PHYCTRL_REG5 + i * 0x100, 0x0410);
+ mdio_wr(PHYCTRL_REG5 + i * 0x100, 0x0412);
+ }
+ } else {
+ mdio_wr(PHYCTRL_REG5 + lane * 0x100, 0x0410);
+ mdio_wr(PHYCTRL_REG5 + lane * 0x100, 0x0412);
+ }
+
+ for (i = 0; i < 64; i++) {
+ mdelay(100);
+ az_pass = az_complete_test(lane);
+ if (az_pass) {
+ save_az_offsets(lane);
+ break;
+ }
+ }
+
+ if (!az_pass) {
+ pr_info("in112525: AZ calibration fail @ lane=%d\n", lane);
+ return -1;
+ }
+
+ if (lane == ALL_LANES) {
+ mdio_wr(PHYMISC_REG8, 0x0002);
+ mdio_wr(PHYMISC_REG9, 0x2028);
+ mdio_wr(PHYCTRL_REG6, 0x0010);
+ usleep_range(1000, 1200);
+ mdio_wr(PHYCTRL_REG6, 0x0110);
+ mdelay(30);
+ mdio_wr(PHYMISC_REG9, 0x3020);
+ } else {
+ mdio_wr(PHYMISC_REG4 + lane * 0x100, 0x0002);
+ mdio_wr(PHYMISC_REG6 + lane * 0x100, 0x2028);
+ mdio_wr(PHYCTRL_REG5 + lane * 0x100, 0x0010);
+ usleep_range(1000, 1200);
+ mdio_wr(PHYCTRL_REG5 + lane * 0x100, 0x0110);
+ mdelay(30);
+ mdio_wr(PHYMISC_REG6 + lane * 0x100, 0x3020);
+ }
+
+ if (lane == ALL_LANES) {
+ mdio_wr(PHYMISC_REG2, 0x1C00);
+ mdio_wr(PHYMISC_REG2, 0x0C00);
+ } else {
+ tx_restart(lane);
+ mdelay(11);
+ }
+
+ if (lane == ALL_LANES) {
+ if (bit_test(mdio_rd(PHYMISC_REG2), 6) == 0)
+ return -1;
+ } else {
+ if (tx_pll_lock_test(lane) == 0)
+ return -1;
+ }
+
+ save_vco_codes(lane);
+
+ if (lane == ALL_LANES) {
+ mdio_wr(PHYMISC_REG2, 0x0400);
+ mdio_wr(PHYMISC_REG2, 0x0000);
+ value = mdio_rd(PHYCTRL_REG1);
+ value = value & 0xffbf;
+ mdio_wr(PHYCTRL_REG2, value);
+ } else {
+ tx_core_de_assert(lane);
+ }
+
+ if (lane == ALL_LANES) {
+ mdio_wr(PHYMISC_REG1, 0x8000);
+ mdio_wr(PHYMISC_REG1, 0x0000);
+ }
+ mdio_rd(PHYMISC_REG1);
+ mdio_rd(PHYMISC_REG1);
+ usleep_range(1000, 1200);
+ mdio_rd(PHYSTAT_REG1);
+ mdio_rd(PHYSTAT_REG2);
+
+ return 0;
+}
+
+static void mykmod_work_handler(struct work_struct *w)
+{
+ int all_lanes_lock, lane0_lock, lane1_lock, lane2_lock, lane3_lock;
+
+ lane0_lock = bit_test(mdio_rd(0x123), 15);
+ lane1_lock = bit_test(mdio_rd(0x223), 15);
+ lane2_lock = bit_test(mdio_rd(0x323), 15);
+ lane3_lock = bit_test(mdio_rd(0x423), 15);
+
+ /* check if the chip had any successful lane lock from the previous
+ * stage (e.g. u-boot)
+ */
+ all_lanes_lock = lane0_lock | lane1_lock | lane2_lock | lane3_lock;
+
+ if (!all_lanes_lock) {
+ /* start fresh */
+ inphi_lane_recovery(ALL_LANES);
+ } else {
+ if (!lane0_lock)
+ inphi_lane_recovery(0);
+ if (!lane1_lock)
+ inphi_lane_recovery(1);
+ if (!lane2_lock)
+ inphi_lane_recovery(2);
+ if (!lane3_lock)
+ inphi_lane_recovery(3);
+ }
+
+ queue_delayed_work(wq, &mykmod_work, onesec);
+}
+
+int inphi_probe(struct phy_device *phydev)
+{
+ int phy_id = 0, id_lsb = 0, id_msb = 0;
+
+ /* setup the inphi_phydev ptr for mdio_rd/mdio_wr APIs */
+ inphi_phydev = phydev;
+
+ /* Read device id from phy registers */
+ id_lsb = mdio_rd(INPHI_S03_DEVICE_ID_MSB);
+ if (id_lsb < 0)
+ return -ENXIO;
+
+ phy_id = id_lsb << 16;
+
+ id_msb = mdio_rd(INPHI_S03_DEVICE_ID_LSB);
+ if (id_msb < 0)
+ return -ENXIO;
+
+ phy_id |= id_msb;
+
+ /* Make sure the device tree binding matched the driver with the
+ * right device.
+ */
+ if (phy_id != phydev->drv->phy_id) {
+ dev_err(&phydev->mdio.dev,
+ "Error matching phy with %s driver\n",
+ phydev->drv->name);
+ return -ENODEV;
+ }
+
+ /* update the local phydev pointer, used inside all APIs */
+ inphi_phydev = phydev;
+ onesec = msecs_to_jiffies(INPHI_POLL_DELAY);
+
+ wq = create_singlethread_workqueue("inphi_kmod");
+ if (wq) {
+ queue_delayed_work(wq, &mykmod_work, onesec);
+ } else {
+ dev_err(&phydev->mdio.dev,
+ "Error creating kernel workqueue for %s driver\n",
+ phydev->drv->name);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static struct phy_driver inphi_driver[] = {
+{
+ .phy_id = PHY_ID_IN112525,
+ .phy_id_mask = 0x0ff0fff0,
+ .name = "Inphi 112525_S03",
+ .features = PHY_GBIT_FEATURES,
+ .probe = &inphi_probe,
+},
+};
+
+module_phy_driver(inphi_driver);
+
+static struct mdio_device_id __maybe_unused inphi_tbl[] = {
+ { PHY_ID_IN112525, 0x0ff0fff0},
+ {},
+};
+
+MODULE_DEVICE_TABLE(mdio, inphi_tbl);
--- /dev/null
+++ b/drivers/net/phy/mdio-mux-multiplexer.c
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* MDIO bus multiplexer using kernel multiplexer subsystem
+ *
+ * Copyright 2019 NXP
+ */
+
+#include <linux/platform_device.h>
+#include <linux/mdio-mux.h>
+#include <linux/module.h>
+#include <linux/mux/consumer.h>
+
+struct mdio_mux_multiplexer_state {
+ struct mux_control *muxc;
+ bool do_deselect;
+ void *mux_handle;
+};
+
+/**
+ * mdio_mux_multiplexer_switch_fn - This function is called by the mdio-mux
+ * layer when it thinks the mdio bus
+ * multiplexer needs to switch.
+ * @current_child: current value of the mux register.
+ * @desired_child: value of the 'reg' property of the target child MDIO node.
+ * @data: Private data used by this switch_fn passed to mdio_mux_init function
+ * via mdio_mux_init(.., .., .., .., data, ..).
+ *
+ * The first time this function is called, current_child == -1.
+ * If current_child == desired_child, then the mux is already set to the
+ * correct bus.
+ */
+static int mdio_mux_multiplexer_switch_fn(int current_child, int desired_child,
+ void *data)
+{
+ struct platform_device *pdev;
+ struct mdio_mux_multiplexer_state *s;
+ int ret = 0;
+
+ pdev = (struct platform_device *)data;
+ s = platform_get_drvdata(pdev);
+
+ if (!(current_child ^ desired_child))
+ return 0;
+
+ if (s->do_deselect)
+ ret = mux_control_deselect(s->muxc);
+ if (ret) {
+ dev_err(&pdev->dev, "mux_control_deselect failed in %s: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = mux_control_select(s->muxc, desired_child);
+ if (!ret) {
+ dev_dbg(&pdev->dev, "%s %d -> %d\n", __func__, current_child,
+ desired_child);
+ s->do_deselect = true;
+ } else {
+ s->do_deselect = false;
+ }
+
+ return ret;
+}
+
+static int mdio_mux_multiplexer_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mdio_mux_multiplexer_state *s;
+ int ret = 0;
+
+ s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL);
+ if (!s)
+ return -ENOMEM;
+
+ s->muxc = devm_mux_control_get(dev, NULL);
+ if (IS_ERR(s->muxc)) {
+ ret = PTR_ERR(s->muxc);
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "Failed to get mux: %d\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, s);
+
+ ret = mdio_mux_init(&pdev->dev, pdev->dev.of_node,
+ mdio_mux_multiplexer_switch_fn, &s->mux_handle,
+ pdev, NULL);
+
+ return ret;
+}
+
+static int mdio_mux_multiplexer_remove(struct platform_device *pdev)
+{
+ struct mdio_mux_multiplexer_state *s = platform_get_drvdata(pdev);
+
+ mdio_mux_uninit(s->mux_handle);
+
+ if (s->do_deselect)
+ mux_control_deselect(s->muxc);
+
+ return 0;
+}
+
+static const struct of_device_id mdio_mux_multiplexer_match[] = {
+ { .compatible = "mdio-mux-multiplexer", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mdio_mux_multiplexer_match);
+
+static struct platform_driver mdio_mux_multiplexer_driver = {
+ .driver = {
+ .name = "mdio-mux-multiplexer",
+ .of_match_table = mdio_mux_multiplexer_match,
+ },
+ .probe = mdio_mux_multiplexer_probe,
+ .remove = mdio_mux_multiplexer_remove,
+};
+
+module_platform_driver(mdio_mux_multiplexer_driver);
+
+MODULE_DESCRIPTION("MDIO bus multiplexer using kernel multiplexer subsystem");
+MODULE_AUTHOR("Pankaj Bansal <pankaj.bansal@nxp.com>");
+MODULE_LICENSE("GPL");
--- a/drivers/net/phy/swphy.c
+++ b/drivers/net/phy/swphy.c
@@ -77,6 +77,7 @@ static const struct swmii_regs duplex[]
static int swphy_decode_speed(int speed)
{
switch (speed) {
+ case 10000:
case 1000:
return SWMII_SPEED_1000;
case 100:
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -87,6 +87,7 @@ typedef enum {
PHY_INTERFACE_MODE_XAUI,
/* 10GBASE-KR, XFI, SFI - single lane 10G Serdes */
PHY_INTERFACE_MODE_10GKR,
+ PHY_INTERFACE_MODE_2500SGMII,
PHY_INTERFACE_MODE_MAX,
} phy_interface_t;
@@ -159,6 +160,8 @@ static inline const char *phy_modes(phy_
return "xaui";
case PHY_INTERFACE_MODE_10GKR:
return "10gbase-kr";
+ case PHY_INTERFACE_MODE_2500SGMII:
+ return "sgmii-2500";
default:
return "unknown";
}
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