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openwrt/target/linux/layerscape/patches-4.14/709-mdio-phy-support-layerscape.patch
Biwen Li 0a827ebd2f layerscape: upgrade kernel to 4.14 
This patch is to upgrade kernel to 4.14 for layerscape.
patches-4.14 for layerscape included two categories.

- NXP Layerscape SDK kernel-4.14 patches

  All patches on tag LSDK-18.09-V4.14 were ported to OpenWrt
  kernel. Since there were hundreds patches, we had to make
  an all-in-one patch for each IP/feature.
  See below links for LSDK kernel.
  https://lsdk.github.io/components.html
  https://source.codeaurora.org/external/qoriq/qoriq-components/linux

- Non-LSDK kernel patches

  Other patches which were not in LSDK were just put in patches-4.14.
  Kept below patches from patches-4.9.
  303-dts-layerscape-add-traverse-ls1043.patch
  821-add-esdhc-vsel-to-ls1043.patch
  822-rgmii-fixed-link.patch

  Renamed and rebase them as below in patches-4.14,
  303-add-DTS-for-Traverse-LS1043-Boards.patch
  712-sdk-dpaa-rgmii-fixed-link.patch
  824-mmc-sdhci-of-esdhc-add-voltage-switch-support-for-ls.patch

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>
2018-12-18 20:17:23 +01:00

1438 lines
37 KiB
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Raw Blame History

From 8eb578a8c1eb55715a40f02790e43aba4a528c38 Mon Sep 17 00:00:00 2001
From: Biwen Li <biwen.li@nxp.com>
Date: Tue, 30 Oct 2018 18:26:51 +0800
Subject: [PATCH 15/40] mdio-phy: support layerscae
This is an integrated patch of mdio-phy for layerscape
Signed-off-by: Bhaskar Upadhaya <Bhaskar.Upadhaya@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: Madalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>
---
drivers/net/phy/Kconfig | 6 +
drivers/net/phy/Makefile | 1 +
drivers/net/phy/fsl_backplane.c | 1358 +++++++++++++++++++++++++++++++
drivers/net/phy/swphy.c | 1 +
include/linux/phy.h | 3 +
5 files changed, 1369 insertions(+)
create mode 100644 drivers/net/phy/fsl_backplane.c
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -90,6 +90,12 @@ config MDIO_BUS_MUX_MMIOREG
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
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_MDIO_BUS_MUX_BCM_IPROC) +=
obj-$(CONFIG_MDIO_BUS_MUX_GPIO) += mdio-mux-gpio.o
obj-$(CONFIG_MDIO_BUS_MUX_MMIOREG) += mdio-mux-mmioreg.o
obj-$(CONFIG_MDIO_CAVIUM) += mdio-cavium.o
+obj-$(CONFIG_MDIO_FSL_BACKPLANE) += fsl_backplane.o
obj-$(CONFIG_MDIO_GPIO) += mdio-gpio.o
obj-$(CONFIG_MDIO_HISI_FEMAC) += mdio-hisi-femac.o
obj-$(CONFIG_MDIO_I2C) += mdio-i2c.o
--- /dev/null
+++ b/drivers/net/phy/fsl_backplane.c
@@ -0,0 +1,1358 @@
+/* Freescale backplane driver.
+ * Author: Shaohui Xie <Shaohui.Xie@freescale.com>
+ *
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * 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>
+
+/* XFI PCS Device Identifier */
+#define FSL_PCS_PHY_ID 0x0083e400
+
+/* Freescale KR PMD registers */
+#define FSL_KR_PMD_CTRL 0x96
+#define FSL_KR_PMD_STATUS 0x97
+#define FSL_KR_LP_CU 0x98
+#define FSL_KR_LP_STATUS 0x99
+#define FSL_KR_LD_CU 0x9a
+#define FSL_KR_LD_STATUS 0x9b
+
+/* Freescale 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
+
+#define FSL_KR_RX_LINK_STAT_MASK 0x1000
+#define FSL_XFI_PCS_10GR_SR1 0x20
+
+/* Freescale KX PCS mode register */
+#define FSL_PCS_IF_MODE 0x8014
+
+/* Freescale KX PCS mode register init value */
+#define IF_MODE_INIT 0x8
+
+/* Freescale KX/KR AN registers */
+#define FSL_AN_AD1 0x11
+#define FSL_AN_BP_STAT 0x30
+
+/* Freescale KX/KR AN registers defines */
+#define AN_CTRL_INIT 0x1200
+#define KX_AN_AD1_INIT 0x25
+#define KR_AN_AD1_INIT 0x85
+#define AN_LNK_UP_MASK 0x4
+#define KR_AN_MASK 0x8
+#define TRAIN_FAIL 0x8
+
+/* C(-1) */
+#define BIN_M1 0
+/* C(1) */
+#define BIN_LONG 1
+#define BIN_M1_SEL 6
+#define BIN_Long_SEL 7
+#define CDR_SEL_MASK 0x00070000
+#define BIN_SNAPSHOT_NUM 5
+#define BIN_M1_THRESHOLD 3
+#define BIN_LONG_THRESHOLD 2
+
+#define PRE_COE_SHIFT 22
+#define POST_COE_SHIFT 16
+#define ZERO_COE_SHIFT 8
+
+#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
+
+#define TECR0_INIT 0x24200000
+#define RATIO_PREQ 0x3
+#define RATIO_PST1Q 0xd
+#define RATIO_EQ 0x20
+
+#define GCR0_RESET_MASK 0x600000
+#define GCR1_SNP_START_MASK 0x00000040
+#define GCR1_CTL_SNP_START_MASK 0x00002000
+#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
+
+#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
+#define RECR1_GAINK3_MASK 0x000f0000
+#define RECR1_GAINK3_SHIFT 16
+#define RECR1_OFFSET_MASK 0x00003f80
+#define RECR1_OFFSET_SHIFT 7
+#define RECR1_BLW_MASK 0x00000f80
+#define RECR1_BLW_SHIFT 7
+#define EYE_CTRL_SHIFT 12
+#define BASE_WAND_SHIFT 10
+
+#define XGKR_TIMEOUT 1050
+
+#define INCREMENT 1
+#define DECREMENT 2
+#define TIMEOUT_LONG 3
+#define TIMEOUT_M1 3
+
+#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)
+
+#define NEW_ALGORITHM_TRAIN_TX
+#ifdef NEW_ALGORITHM_TRAIN_TX
+#define FORCE_INC_COP1_NUMBER 0
+#define FORCE_INC_COM1_NUMBER 1
+#endif
+
+#define VAL_INVALID 0xff
+
+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_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 per_lane_ctrl_status {
+ __be32 gcr0; /* 0x.000 - General Control Register 0 */
+ __be32 gcr1; /* 0x.004 - General Control Register 1 */
+ __be32 gcr2; /* 0x.008 - General Control Register 2 */
+ __be32 resv1; /* 0x.00C - Reserved */
+ __be32 recr0; /* 0x.010 - Receive Equalization Control Register 0 */
+ __be32 recr1; /* 0x.014 - Receive Equalization Control Register 1 */
+ __be32 tecr0; /* 0x.018 - Transmit Equalization Control Register 0 */
+ __be32 resv2; /* 0x.01C - Reserved */
+ __be32 tlcr0; /* 0x.020 - TTL Control Register 0 */
+ __be32 tlcr1; /* 0x.024 - TTL Control Register 1 */
+ __be32 tlcr2; /* 0x.028 - TTL Control Register 2 */
+ __be32 tlcr3; /* 0x.02C - TTL Control Register 3 */
+ __be32 tcsr0; /* 0x.030 - Test Control/Status Register 0 */
+ __be32 tcsr1; /* 0x.034 - Test Control/Status Register 1 */
+ __be32 tcsr2; /* 0x.038 - Test Control/Status Register 2 */
+ __be32 tcsr3; /* 0x.03C - Test Control/Status Register 3 */
+};
+
+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 fsl_xgkr_inst {
+ void *reg_base;
+ struct phy_device *phydev;
+ struct tx_condition tx_c;
+ struct delayed_work xgkr_wk;
+ enum train_state state;
+ u32 ld_update;
+ u32 ld_status;
+ u32 ratio_preq;
+ u32 ratio_pst1q;
+ u32 adpt_eq;
+};
+
+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_tecr0(struct fsl_xgkr_inst *inst)
+{
+ struct per_lane_ctrl_status *reg_base = inst->reg_base;
+ u32 val;
+
+ val = TECR0_INIT |
+ inst->adpt_eq << ZERO_COE_SHIFT |
+ inst->ratio_preq << PRE_COE_SHIFT |
+ inst->ratio_pst1q << POST_COE_SHIFT;
+
+ /* reset the lane */
+ iowrite32(ioread32(&reg_base->gcr0) & ~GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+ iowrite32(val, &reg_base->tecr0);
+ udelay(1);
+ /* unreset the lane */
+ iowrite32(ioread32(&reg_base->gcr0) | GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+}
+
+static void start_lt(struct phy_device *phydev)
+{
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_PMD_CTRL, TRAIN_EN);
+}
+
+static void stop_lt(struct phy_device *phydev)
+{
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_PMD_CTRL, TRAIN_DISABLE);
+}
+
+static void reset_gcr0(struct fsl_xgkr_inst *inst)
+{
+ struct per_lane_ctrl_status *reg_base = inst->reg_base;
+
+ iowrite32(ioread32(&reg_base->gcr0) & ~GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+ iowrite32(ioread32(&reg_base->gcr0) | GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+}
+
+void lane_set_1gkx(void *reg)
+{
+ struct per_lane_ctrl_status *reg_base = reg;
+ u32 val;
+
+ /* reset the lane */
+ iowrite32(ioread32(&reg_base->gcr0) & ~GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+
+ /* set gcr1 for 1GKX */
+ val = ioread32(&reg_base->gcr1);
+ val &= ~(GCR1_REIDL_TH_MASK | GCR1_REIDL_EX_SEL_MASK |
+ GCR1_REIDL_ET_MAS_MASK);
+ iowrite32(val, &reg_base->gcr1);
+ udelay(1);
+
+ /* set tecr0 for 1GKX */
+ val = ioread32(&reg_base->tecr0);
+ val &= ~TECR0_AMP_RED_MASK;
+ iowrite32(val, &reg_base->tecr0);
+ udelay(1);
+
+ /* unreset the lane */
+ iowrite32(ioread32(&reg_base->gcr0) | GCR0_RESET_MASK,
+ &reg_base->gcr0);
+ udelay(1);
+}
+
+static void reset_lt(struct phy_device *phydev)
+{
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1, PMD_RESET);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_PMD_CTRL, TRAIN_DISABLE);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_LD_CU, 0);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_LD_STATUS, 0);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_PMD_STATUS, 0);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_LP_CU, 0);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_LP_STATUS, 0);
+}
+
+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 phy_device *phydev)
+{
+ struct fsl_xgkr_inst *inst;
+
+ reset_lt(phydev);
+ phy_write_mmd(phydev, MDIO_MMD_AN, FSL_AN_AD1, KR_AN_AD1_INIT);
+ phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1, AN_CTRL_INIT);
+
+ inst = phydev->priv;
+
+ /* start state machine*/
+ start_xgkr_state_machine(&inst->xgkr_wk);
+}
+
+static void start_1gkx_an(struct phy_device *phydev)
+{
+ phy_write_mmd(phydev, MDIO_MMD_PCS, FSL_PCS_IF_MODE, IF_MODE_INIT);
+ phy_write_mmd(phydev, MDIO_MMD_AN, FSL_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 ld_coe_status(struct fsl_xgkr_inst *inst)
+{
+ phy_write_mmd(inst->phydev, MDIO_MMD_PMAPMD,
+ FSL_KR_LD_STATUS, inst->ld_status);
+}
+
+static void ld_coe_update(struct fsl_xgkr_inst *inst)
+{
+ dev_dbg(&inst->phydev->mdio.dev, "sending request: %x\n", inst->ld_update);
+ phy_write_mmd(inst->phydev, MDIO_MMD_PMAPMD,
+ FSL_KR_LD_CU, inst->ld_update);
+}
+
+static void init_inst(struct fsl_xgkr_inst *inst, int reset)
+{
+ if (reset) {
+ inst->ratio_preq = RATIO_PREQ;
+ inst->ratio_pst1q = RATIO_PST1Q;
+ inst->adpt_eq = RATIO_EQ;
+ tune_tecr0(inst);
+ }
+
+ tx_condition_init(&inst->tx_c);
+ inst->state = DETECTING_LP;
+ inst->ld_status &= RX_READY_MASK;
+ ld_coe_status(inst);
+ inst->ld_update = 0;
+ inst->ld_status &= ~RX_READY_MASK;
+ ld_coe_status(inst);
+}
+
+#ifdef NEW_ALGORITHM_TRAIN_TX
+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 (ioread32(&reg_base->recr1) &
+ RECR1_CTL_SNP_DONE_MASK) {
+ udelay(1);
+ timeout--;
+ if (timeout == 0)
+ break;
+ }
+
+ /* start snap shot */
+ iowrite32((ioread32(&reg_base->gcr1) |
+ GCR1_CTL_SNP_START_MASK),
+ &reg_base->gcr1);
+
+ /* wait for SNP done */
+ timeout = 100;
+ while (!(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 = 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] */
+ iowrite32((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];
+}
+#endif
+
+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 ((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) {
+ iowrite32((ioread32(&reg_base->tcsr1) &
+ ~CDR_SEL_MASK) | BIN_M1_SEL,
+ &reg_base->tcsr1);
+ } else {
+ iowrite32((ioread32(&reg_base->tcsr1) &
+ ~CDR_SEL_MASK) | BIN_Long_SEL,
+ &reg_base->tcsr1);
+ }
+
+ /* start snap shot */
+ iowrite32(ioread32(&reg_base->gcr1) | GCR1_SNP_START_MASK,
+ &reg_base->gcr1);
+
+ /* wait for SNP done */
+ timeout = 100;
+ while (!(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] = (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] */
+ iowrite32(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;
+}
+
+static void train_tx(struct fsl_xgkr_inst *inst)
+{
+ struct phy_device *phydev = inst->phydev;
+ struct tx_condition *tx_c = &inst->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;
+ inst->ld_status |= RX_READY_MASK;
+ ld_coe_status(inst);
+ /* tell LP we are ready */
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD,
+ FSL_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 = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, FSL_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 = inst->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)) {
+ inst->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) {
+ inst->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))) {
+ inst->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) {
+ inst->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(inst);
+ goto recheck;
+ }
+#endif
+ if ((req_cop1 == DECREMENT && status_cop1 == COE_MIN) ||
+ (req_cop1 == INCREMENT && status_cop1 == COE_MAX)) {
+ dev_dbg(&inst->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(inst);
+ goto recheck;
+ }
+ }
+ }
+ }
+
+ if (status_coz != COE_NOTUPDATED) {
+ if (req_coz)
+ inst->ld_update &= ~COZ_MASK;
+ }
+
+ if (status_com1 != COE_NOTUPDATED) {
+ if (req_com1) {
+ inst->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(inst);
+ 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(&inst->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(inst);
+ goto recheck;
+ }
+ }
+ }
+ }
+
+ if (old_ld_update != inst->ld_update) {
+ ld_coe_update(inst);
+ /* 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 (!(inst->ld_update & (PRESET_MASK | INIT_MASK))) {
+ if (tx_c->pre_inc) {
+ inst->ld_update = INCREMENT << COM1_SHIFT;
+ ld_coe_update(inst);
+ return;
+ }
+
+ if (status_cop1 != COE_MAX) {
+ median_gaink2 = get_median_gaink2(inst->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) {
+ inst->ld_update = INCREMENT << COP1_SHIFT;
+ ld_coe_update(inst);
+ return;
+ }
+ }
+#endif
+
+ /* snapshot and select bin */
+ bin_m1_early = is_bin_early(BIN_M1, inst->reg_base);
+ bin_long_early = is_bin_early(BIN_LONG, inst->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 (!(inst->ld_update & (PRESET_MASK | INIT_MASK))) {
+ if (!tx_c->bin_long_stop) {
+ /* BinM1 correction means changing COM1 */
+ if (!status_com1 && !(inst->ld_update & COM1_MASK)) {
+ /* Avoid BinM1Late by requesting an
+ * immediate decrement.
+ */
+ if (!bin_m1_early) {
+ /* request decrement c(-1) */
+ temp = DECREMENT << COM1_SHIFT;
+ inst->ld_update = temp;
+ ld_coe_update(inst);
+ tx_c->bin_m1_late_early = bin_m1_early;
+ return;
+ }
+ }
+
+ /* BinLong correction means changing COP1 */
+ if (!status_cop1 && !(inst->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;
+ inst->ld_update = temp;
+ } else {
+ /* request decrement c(1) */
+ temp = DECREMENT << COP1_SHIFT;
+ inst->ld_update = temp;
+ }
+
+ ld_coe_update(inst);
+ 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 && !(inst->ld_update & COM1_MASK)) {
+ /* Locate BinM1 transition point (if any) */
+ if (bin_m1_early) {
+ /* request increment c(-1) */
+ temp = INCREMENT << COM1_SHIFT;
+ inst->ld_update = temp;
+ } else {
+ /* request decrement c(-1) */
+ temp = DECREMENT << COM1_SHIFT;
+ inst->ld_update = temp;
+ }
+
+ ld_coe_update(inst);
+ tx_c->bin_m1_late_early = bin_m1_early;
+ }
+ }
+ }
+}
+
+static int is_link_up(struct phy_device *phydev)
+{
+ int val;
+
+ phy_read_mmd(phydev, MDIO_MMD_PCS, FSL_XFI_PCS_10GR_SR1);
+ val = phy_read_mmd(phydev, MDIO_MMD_PCS, FSL_XFI_PCS_10GR_SR1);
+
+ return (val & FSL_KR_RX_LINK_STAT_MASK) ? 1 : 0;
+}
+
+static int is_link_training_fail(struct phy_device *phydev)
+{
+ int val;
+ int timeout = 100;
+
+ val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, FSL_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 phy_device *phydev)
+{
+ return phy_read_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_LP_STATUS) &
+ RX_READY_MASK;
+}
+
+/* Coefficient values have hardware restrictions */
+static int is_ld_valid(struct fsl_xgkr_inst *inst)
+{
+ u32 ratio_pst1q = inst->ratio_pst1q;
+ u32 adpt_eq = inst->adpt_eq;
+ u32 ratio_preq = inst->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 int inc_dec(struct fsl_xgkr_inst *inst, int field, int request)
+{
+ u32 ld_limit[3], ld_coe[3], step[3];
+
+ ld_coe[0] = inst->ratio_pst1q;
+ ld_coe[1] = inst->adpt_eq;
+ ld_coe[2] = inst->ratio_preq;
+
+ /* Information specific to the Freescale 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 2;
+ 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 1;
+ break;
+ default:
+ break;
+ }
+
+ if (is_ld_valid(inst)) {
+ /* accept new ld */
+ inst->ratio_pst1q = ld_coe[0];
+ inst->adpt_eq = ld_coe[1];
+ inst->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(&inst->phydev->mdio.dev,
+ "preq skipped value: %d\n", ld_coe[2]);
+ return 0;
+ }
+
+ if (!is_value_allowed((const u32 *)&pst1q_table, ld_coe[0])) {
+ dev_dbg(&inst->phydev->mdio.dev,
+ "pst1q skipped value: %d\n", ld_coe[0]);
+ return 0;
+ }
+
+ tune_tecr0(inst);
+ } else {
+ if (request == DECREMENT)
+ /* MIN */
+ return 1;
+ if (request == INCREMENT)
+ /* MAX */
+ return 2;
+ }
+
+ return 0;
+}
+
+static void min_max_updated(struct fsl_xgkr_inst *inst, int field, int new_ld)
+{
+ u32 ld_coe[] = {COE_UPDATED, COE_MIN, COE_MAX};
+ u32 mask, val;
+
+ switch (field) {
+ case COE_COP1:
+ mask = COP1_MASK;
+ val = ld_coe[new_ld] << COP1_SHIFT;
+ break;
+ case COE_COZ:
+ mask = COZ_MASK;
+ val = ld_coe[new_ld] << COZ_SHIFT;
+ break;
+ case COE_COM:
+ mask = COM1_MASK;
+ val = ld_coe[new_ld] << COM1_SHIFT;
+ break;
+ default:
+ return;
+ }
+
+ inst->ld_status &= ~mask;
+ inst->ld_status |= val;
+}
+
+static void check_request(struct fsl_xgkr_inst *inst, int request)
+{
+ int cop1_req, coz_req, com_req;
+ int old_status, new_ld_sta;
+
+ 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 = inst->ld_status;
+
+ if (cop1_req && !(inst->ld_status & COP1_MASK)) {
+ new_ld_sta = inc_dec(inst, COE_COP1, cop1_req);
+ min_max_updated(inst, COE_COP1, new_ld_sta);
+ }
+
+ if (coz_req && !(inst->ld_status & COZ_MASK)) {
+ new_ld_sta = inc_dec(inst, COE_COZ, coz_req);
+ min_max_updated(inst, COE_COZ, new_ld_sta);
+ }
+
+ if (com_req && !(inst->ld_status & COM1_MASK)) {
+ new_ld_sta = inc_dec(inst, COE_COM, com_req);
+ min_max_updated(inst, COE_COM, new_ld_sta);
+ }
+
+ if (old_status != inst->ld_status)
+ ld_coe_status(inst);
+}
+
+static void preset(struct fsl_xgkr_inst *inst)
+{
+ /* These are all MAX values from the IEEE802.3 perspective. */
+ inst->ratio_pst1q = POST_COE_MAX;
+ inst->adpt_eq = ZERO_COE_MAX;
+ inst->ratio_preq = PRE_COE_MAX;
+
+ tune_tecr0(inst);
+ inst->ld_status &= ~(COP1_MASK | COZ_MASK | COM1_MASK);
+ inst->ld_status |= COE_MAX << COP1_SHIFT |
+ COE_MAX << COZ_SHIFT |
+ COE_MAX << COM1_SHIFT;
+ ld_coe_status(inst);
+}
+
+static void initialize(struct fsl_xgkr_inst *inst)
+{
+ inst->ratio_preq = RATIO_PREQ;
+ inst->ratio_pst1q = RATIO_PST1Q;
+ inst->adpt_eq = RATIO_EQ;
+
+ tune_tecr0(inst);
+ inst->ld_status &= ~(COP1_MASK | COZ_MASK | COM1_MASK);
+ inst->ld_status |= COE_UPDATED << COP1_SHIFT |
+ COE_UPDATED << COZ_SHIFT |
+ COE_UPDATED << COM1_SHIFT;
+ ld_coe_status(inst);
+}
+
+static void train_rx(struct fsl_xgkr_inst *inst)
+{
+ struct phy_device *phydev = inst->phydev;
+ int request, old_ld_status;
+
+ /* get request from LP */
+ request = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, FSL_KR_LP_CU) &
+ (LD_ALL_MASK);
+ old_ld_status = inst->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))
+ inst->ld_status &= ~COP1_MASK;
+
+ if (!(request & COZ_MASK))
+ inst->ld_status &= ~COZ_MASK;
+
+ if (!(request & COM1_MASK))
+ inst->ld_status &= ~COM1_MASK;
+
+ if (old_ld_status != inst->ld_status)
+ ld_coe_status(inst);
+ }
+
+ /* As soon as the LP shows ready, no need to do any more updates. */
+ if (check_rx(phydev)) {
+ /* LP receiver is ready */
+ if (inst->ld_status & (COP1_MASK | COZ_MASK | COM1_MASK)) {
+ inst->ld_status &= ~(COP1_MASK | COZ_MASK | COM1_MASK);
+ ld_coe_status(inst);
+ }
+ } 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 (!(inst->ld_status &
+ (COP1_MASK | COZ_MASK | COM1_MASK))) {
+ if (request & PRESET_MASK)
+ preset(inst);
+
+ if (request & INIT_MASK)
+ initialize(inst);
+ }
+ }
+
+ /* LP Coefficient are not in HOLD */
+ if (request & REQUEST_MASK)
+ check_request(inst, request & REQUEST_MASK);
+ }
+}
+
+static void xgkr_start_train(struct phy_device *phydev)
+{
+ struct fsl_xgkr_inst *inst = phydev->priv;
+ struct tx_condition *tx_c = &inst->tx_c;
+ int val = 0, i;
+ int lt_state;
+ unsigned long dead_line;
+ int rx_ok, tx_ok;
+
+ init_inst(inst, 0);
+ start_lt(phydev);
+
+ for (i = 0; i < 2;) {
+ dead_line = jiffies + msecs_to_jiffies(500);
+ while (time_before(jiffies, dead_line)) {
+ val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD,
+ FSL_KR_PMD_STATUS);
+ if (val & TRAIN_FAIL) {
+ /* LT failed already, reset lane to avoid
+ * it run into hanging, then start LT again.
+ */
+ reset_gcr0(inst);
+ start_lt(phydev);
+ } 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 */
+ rx_ok = false;
+ tx_ok = false;
+ /* the LT should be finished in 500ms, failed or OK. */
+ dead_line = jiffies + msecs_to_jiffies(500);
+
+ while (time_before(jiffies, dead_line)) {
+ /* check if the LT is already failed */
+ lt_state = phy_read_mmd(phydev, MDIO_MMD_PMAPMD,
+ FSL_KR_PMD_STATUS);
+ if (lt_state & TRAIN_FAIL) {
+ reset_gcr0(inst);
+ break;
+ }
+
+ rx_ok = check_rx(phydev);
+ tx_ok = tx_c->tx_complete;
+
+ if (rx_ok && tx_ok)
+ break;
+
+ if (!rx_ok)
+ train_rx(inst);
+
+ if (!tx_ok)
+ train_tx(inst);
+
+ usleep_range(100, 500);
+ }
+
+ i++;
+ /* check LT result */
+ if (is_link_training_fail(phydev)) {
+ init_inst(inst, 0);
+ continue;
+ } else {
+ stop_lt(phydev);
+ inst->state = TRAINED;
+ break;
+ }
+ }
+}
+
+static void xgkr_state_machine(struct work_struct *work)
+{
+ struct delayed_work *dwork = to_delayed_work(work);
+ struct fsl_xgkr_inst *inst = container_of(dwork,
+ struct fsl_xgkr_inst,
+ xgkr_wk);
+ struct phy_device *phydev = inst->phydev;
+ int an_state;
+ bool needs_train = false;
+
+ mutex_lock(&phydev->lock);
+
+ switch (inst->state) {
+ case DETECTING_LP:
+ phy_read_mmd(phydev, MDIO_MMD_AN, FSL_AN_BP_STAT);
+ an_state = phy_read_mmd(phydev, MDIO_MMD_AN, FSL_AN_BP_STAT);
+ if ((an_state & KR_AN_MASK))
+ needs_train = true;
+ break;
+ case TRAINED:
+ if (!is_link_up(phydev)) {
+ dev_info(&phydev->mdio.dev,
+ "Detect hotplug, restart training\n");
+ init_inst(inst, 1);
+ start_xgkr_an(phydev);
+ inst->state = DETECTING_LP;
+ }
+ break;
+ }
+
+ if (needs_train)
+ xgkr_start_train(phydev);
+
+ mutex_unlock(&phydev->lock);
+ queue_delayed_work(system_power_efficient_wq, &inst->xgkr_wk,
+ msecs_to_jiffies(XGKR_TIMEOUT));
+}
+
+static int fsl_backplane_probe(struct phy_device *phydev)
+{
+ struct fsl_xgkr_inst *xgkr_inst;
+ struct device_node *phy_node, *lane_node;
+ struct resource res_lane;
+ const char *bm;
+ int ret;
+ int bp_mode;
+ u32 lane[2];
+
+ phy_node = phydev->mdio.dev.of_node;
+ bp_mode = of_property_read_string(phy_node, "backplane-mode", &bm);
+ if (bp_mode < 0)
+ return 0;
+
+ if (!strcasecmp(bm, "1000base-kx")) {
+ bp_mode = PHY_BACKPLANE_1000BASE_KX;
+ } else if (!strcasecmp(bm, "10gbase-kr")) {
+ bp_mode = PHY_BACKPLANE_10GBASE_KR;
+ } 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_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, 2);
+ if (ret) {
+ dev_err(&phydev->mdio.dev, "could not get fsl,lane-reg\n");
+ return -EINVAL;
+ }
+
+ phydev->priv = devm_ioremap_nocache(&phydev->mdio.dev,
+ res_lane.start + lane[0],
+ lane[1]);
+ if (!phydev->priv) {
+ dev_err(&phydev->mdio.dev, "ioremap_nocache failed\n");
+ return -ENOMEM;
+ }
+
+ if (bp_mode == PHY_BACKPLANE_1000BASE_KX) {
+ phydev->speed = SPEED_1000;
+ /* configure the lane for 1000BASE-KX */
+ lane_set_1gkx(phydev->priv);
+ return 0;
+ }
+
+ xgkr_inst = devm_kzalloc(&phydev->mdio.dev,
+ sizeof(*xgkr_inst), GFP_KERNEL);
+ if (!xgkr_inst)
+ return -ENOMEM;
+
+ xgkr_inst->reg_base = phydev->priv;
+ xgkr_inst->phydev = phydev;
+ phydev->priv = xgkr_inst;
+
+ if (bp_mode == PHY_BACKPLANE_10GBASE_KR) {
+ phydev->speed = SPEED_10000;
+ INIT_DELAYED_WORK(&xgkr_inst->xgkr_wk, xgkr_state_machine);
+ }
+
+ return 0;
+}
+
+static int fsl_backplane_aneg_done(struct phy_device *phydev)
+{
+ return 1;
+}
+
+static int fsl_backplane_config_aneg(struct phy_device *phydev)
+{
+ if (phydev->speed == SPEED_10000) {
+ phydev->supported |= SUPPORTED_10000baseKR_Full;
+ start_xgkr_an(phydev);
+ } else if (phydev->speed == SPEED_1000) {
+ phydev->supported |= SUPPORTED_1000baseKX_Full;
+ start_1gkx_an(phydev);
+ }
+
+ phydev->advertising = phydev->supported;
+ phydev->duplex = 1;
+
+ return 0;
+}
+
+static int fsl_backplane_suspend(struct phy_device *phydev)
+{
+ if (phydev->speed == SPEED_10000) {
+ struct fsl_xgkr_inst *xgkr_inst = phydev->priv;
+
+ cancel_delayed_work_sync(&xgkr_inst->xgkr_wk);
+ }
+ return 0;
+}
+
+static int fsl_backplane_resume(struct phy_device *phydev)
+{
+ if (phydev->speed == SPEED_10000) {
+ struct fsl_xgkr_inst *xgkr_inst = phydev->priv;
+
+ init_inst(xgkr_inst, 1);
+ queue_delayed_work(system_power_efficient_wq,
+ &xgkr_inst->xgkr_wk,
+ msecs_to_jiffies(XGKR_TIMEOUT));
+ }
+ return 0;
+}
+
+static int fsl_backplane_read_status(struct phy_device *phydev)
+{
+ if (is_link_up(phydev))
+ phydev->link = 1;
+ else
+ phydev->link = 0;
+
+ return 0;
+}
+
+static struct phy_driver fsl_backplane_driver[] = {
+ {
+ .phy_id = FSL_PCS_PHY_ID,
+ .name = "Freescale Backplane",
+ .phy_id_mask = 0xffffffff,
+ .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,
+ },
+};
+
+module_phy_driver(fsl_backplane_driver);
+
+static struct mdio_device_id __maybe_unused freescale_tbl[] = {
+ { FSL_PCS_PHY_ID, 0xffffffff },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, freescale_tbl);
+
+MODULE_DESCRIPTION("Freescale Backplane driver");
+MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
+MODULE_LICENSE("GPL v2");
--- 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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