Diff: targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/TARGET_FRDM/fsl_phy.c

Revision:

144:ef7eb2e8f9f7

diff -r 423e1876dc07 -r ef7eb2e8f9f7 targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/TARGET_FRDM/fsl_phy.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/TARGET_FRDM/fsl_phy.c	Fri Sep 02 15:07:44 2016 +0100
@@ -0,0 +1,292 @@
+/*
+* Copyright (c) 2015, Freescale Semiconductor, Inc.
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* o Redistributions of source code must retain the above copyright notice, this list
+*   of conditions and the following disclaimer.
+*
+* o 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.
+*
+* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
+*   contributors may be used to endorse or promote products derived from this
+*   software without specific prior written permission.
+*
+* 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.
+*/
+
+#include "fsl_phy.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*! @brief Defines the timeout macro. */
+#define PHY_TIMEOUT_COUNT 0xFFFFFU
+
+/*******************************************************************************
+ * Prototypes
+ ******************************************************************************/
+
+/*!
+ * @brief Get the ENET instance from peripheral base address.
+ *
+ * @param base ENET peripheral base address.
+ * @return ENET instance.
+ */
+extern uint32_t ENET_GetInstance(ENET_Type *base);
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+
+/*! @brief Pointers to enet clocks for each instance. */
+extern clock_ip_name_t s_enetClock[FSL_FEATURE_SOC_ENET_COUNT];
+
+/*******************************************************************************
+ * Code
+ ******************************************************************************/
+
+status_t PHY_Init(ENET_Type *base, uint32_t phyAddr, uint32_t srcClock_Hz)
+{
+    uint32_t bssReg;
+    uint32_t counter = PHY_TIMEOUT_COUNT;
+    status_t result = kStatus_Success;
+    uint32_t instance = ENET_GetInstance(base);
+
+    /* Set SMI first. */
+    CLOCK_EnableClock(s_enetClock[instance]);
+    ENET_SetSMI(base, srcClock_Hz, false);
+
+    /* Reset PHY. */
+    result = PHY_Write(base, phyAddr, PHY_BASICCONTROL_REG, PHY_BCTL_RESET_MASK);
+    if (result == kStatus_Success)
+    {
+        /* Set the negotiation. */
+        result = PHY_Write(base, phyAddr, PHY_AUTONEG_ADVERTISE_REG,
+                           (PHY_100BASETX_FULLDUPLEX_MASK | PHY_100BASETX_HALFDUPLEX_MASK |
+                            PHY_10BASETX_FULLDUPLEX_MASK | PHY_10BASETX_HALFDUPLEX_MASK | 0x1U));
+        if (result == kStatus_Success)
+        {
+            result = PHY_Write(base, phyAddr, PHY_BASICCONTROL_REG,
+                               (PHY_BCTL_AUTONEG_MASK | PHY_BCTL_RESTART_AUTONEG_MASK));
+            if (result == kStatus_Success)
+            {
+                /* Check auto negotiation complete. */
+                while (counter --)
+                {
+                    result = PHY_Read(base, phyAddr, PHY_BASICSTATUS_REG, &bssReg);
+                    if ( result == kStatus_Success)
+                    {
+                        if ((bssReg & PHY_BSTATUS_AUTONEGCOMP_MASK) != 0)
+                        {
+                            break;
+                        }
+                    }
+
+                    if (!counter)
+                    {
+                        return kStatus_PHY_AutoNegotiateFail;
+                    }
+                }
+            }
+        }
+    }
+
+    return result;
+}
+
+status_t PHY_Write(ENET_Type *base, uint32_t phyAddr, uint32_t phyReg, uint32_t data)
+{
+    uint32_t counter;
+
+    /* Clear the SMI interrupt event. */
+    ENET_ClearInterruptStatus(base, ENET_EIR_MII_MASK);
+
+    /* Starts a SMI write command. */
+    ENET_StartSMIWrite(base, phyAddr, phyReg, kENET_MiiWriteValidFrame, data);
+
+    /* Wait for SMI complete. */
+    for (counter = PHY_TIMEOUT_COUNT; counter > 0; counter--)
+    {
+        if (ENET_GetInterruptStatus(base) & ENET_EIR_MII_MASK)
+        {
+            break;
+        }
+    }
+
+    /* Check for timeout. */
+    if (!counter)
+    {
+        return kStatus_PHY_SMIVisitTimeout;
+    }
+
+    /* Clear MII interrupt event. */
+    ENET_ClearInterruptStatus(base, ENET_EIR_MII_MASK);
+
+    return kStatus_Success;
+}
+
+status_t PHY_Read(ENET_Type *base, uint32_t phyAddr, uint32_t phyReg, uint32_t *dataPtr)
+{
+    assert(dataPtr);
+
+    uint32_t counter;
+
+    /* Clear the MII interrupt event. */
+    ENET_ClearInterruptStatus(base, ENET_EIR_MII_MASK);
+
+    /* Starts a SMI read command operation. */
+    ENET_StartSMIRead(base, phyAddr, phyReg, kENET_MiiReadValidFrame);
+
+    /* Wait for MII complete. */
+    for (counter = PHY_TIMEOUT_COUNT; counter > 0; counter--)
+    {
+        if (ENET_GetInterruptStatus(base) & ENET_EIR_MII_MASK)
+        {
+            break;
+        }
+    }
+
+    /* Check for timeout. */
+    if (!counter)
+    {
+        return kStatus_PHY_SMIVisitTimeout;
+    }
+
+    /* Get data from MII register. */
+    *dataPtr = ENET_ReadSMIData(base);
+
+    /* Clear MII interrupt event. */
+    ENET_ClearInterruptStatus(base, ENET_EIR_MII_MASK);
+
+    return kStatus_Success;
+}
+
+status_t PHY_EnableLoopback(ENET_Type *base, uint32_t phyAddr, phy_loop_t mode, bool enable)
+{
+    status_t result;
+    uint32_t data = 0;
+
+    /* Set the loop mode. */
+    if (enable)
+    {
+        if (mode == kPHY_LocalLoop)
+        {
+            /* First read the current status in control register. */
+            result = PHY_Read(base, phyAddr, PHY_BASICCONTROL_REG, &data);
+            if (result == kStatus_Success)
+            {
+                return PHY_Write(base, phyAddr, PHY_BASICCONTROL_REG, (data | PHY_BCTL_LOOP_MASK));
+            }
+        }
+        else
+        {
+            /* First read the current status in control register. */
+            result = PHY_Read(base, phyAddr, PHY_CONTROL2_REG, &data);
+            if (result == kStatus_Success)
+            {
+                return PHY_Write(base, phyAddr, PHY_CONTROL2_REG, (data | PHY_CTL2_REMOTELOOP_MASK));
+            }
+        }
+    }
+    else
+    {
+        /* Disable the loop mode. */
+        if (mode == kPHY_LocalLoop)
+        {
+            /* First read the current status in the basic control register. */
+            result = PHY_Read(base, phyAddr, PHY_BASICCONTROL_REG, &data);
+            if (result == kStatus_Success)
+            {
+                return PHY_Write(base, phyAddr, PHY_BASICCONTROL_REG, (data & ~PHY_BCTL_LOOP_MASK));
+            }
+        }
+        else
+        {
+            /* First read the current status in control one register. */
+            result = PHY_Read(base, phyAddr, PHY_CONTROL2_REG, &data);
+            if (result == kStatus_Success)
+            {
+                return PHY_Write(base, phyAddr, PHY_CONTROL2_REG, (data & ~PHY_CTL2_REMOTELOOP_MASK));
+            }
+        }
+    }
+    return result;
+}
+
+status_t PHY_GetLinkStatus(ENET_Type *base, uint32_t phyAddr, bool *status)
+{
+    assert(status);
+
+    status_t result = kStatus_Success;
+    uint32_t data;
+
+    /* Read the basic status register. */
+    result = PHY_Read(base, phyAddr, PHY_BASICSTATUS_REG, &data);
+    if (result == kStatus_Success)
+    {
+        if (!(PHY_BSTATUS_LINKSTATUS_MASK & data))
+        {
+            /* link down. */
+            *status = false;
+        }
+        else
+        {
+            /* link up. */
+            *status = true;
+        }
+    }
+    return result;
+}
+
+status_t PHY_GetLinkSpeedDuplex(ENET_Type *base, uint32_t phyAddr, phy_speed_t *speed, phy_duplex_t *duplex)
+{
+    assert(duplex);
+
+    status_t result = kStatus_Success;
+    uint32_t data, ctlReg;
+
+    /* Read the control two register. */
+    result = PHY_Read(base, phyAddr, PHY_CONTROL1_REG, &ctlReg);
+    if (result == kStatus_Success)
+    {
+        data = ctlReg & PHY_CTL1_SPEEDUPLX_MASK;
+        if ((PHY_CTL1_10FULLDUPLEX_MASK == data) || (PHY_CTL1_100FULLDUPLEX_MASK == data))
+        {
+            /* Full duplex. */
+            *duplex = kPHY_FullDuplex;
+        }
+        else
+        {
+            /* Half duplex. */
+            *duplex = kPHY_HalfDuplex;
+        }
+
+        data = ctlReg & PHY_CTL1_SPEEDUPLX_MASK;
+        if ((PHY_CTL1_100HALFDUPLEX_MASK == data) || (PHY_CTL1_100FULLDUPLEX_MASK == data))
+        {
+            /* 100M speed. */
+            *speed = kPHY_Speed100M;
+        }
+        else
+        { /* 10M speed. */
+            *speed = kPHY_Speed10M;
+        }
+    }
+
+    return result;
+}