summaryrefslogtreecommitdiff
path: root/drivers/net/npe/IxEthMii.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/npe/IxEthMii.c')
-rw-r--r--drivers/net/npe/IxEthMii.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/drivers/net/npe/IxEthMii.c b/drivers/net/npe/IxEthMii.c
new file mode 100644
index 0000000..4d92f17
--- /dev/null
+++ b/drivers/net/npe/IxEthMii.c
@@ -0,0 +1,497 @@
+/**
+ * @file IxEthMii.c
+ *
+ * @author Intel Corporation
+ * @date
+ *
+ * @brief MII control functions
+ *
+ * Design Notes:
+ *
+ *
+ * @par
+ * IXP400 SW Release version 2.0
+ *
+ * -- Copyright Notice --
+ *
+ * @par
+ * Copyright 2001-2005, Intel Corporation.
+ * All rights reserved.
+ *
+ * @par
+ * 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.
+ * 3. Neither the name of the Intel Corporation nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * @par
+ * 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 OWNER 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.
+ *
+ * @par
+ * -- End of Copyright Notice --
+ */
+
+#include "IxOsal.h"
+
+#include "IxEthAcc.h"
+#include "IxEthMii_p.h"
+
+#ifdef __wince
+#include "IxOsPrintf.h"
+#endif
+
+/* Array to store the phy IDs of the discovered phys */
+PRIVATE UINT32 ixEthMiiPhyId[IXP425_ETH_ACC_MII_MAX_ADDR];
+
+/*********************************************************
+ *
+ * Scan for PHYs on the MII bus. This function returns
+ * an array of booleans, one for each PHY address.
+ * If a PHY is found at a particular address, the
+ * corresponding entry in the array is set to TRUE.
+ *
+ */
+
+PUBLIC IX_STATUS
+ixEthMiiPhyScan(BOOL phyPresent[], UINT32 maxPhyCount)
+{
+ UINT32 i;
+ UINT16 regval, regvalId1, regvalId2;
+
+ /*Search for PHYs on the MII*/
+ /*Search for existant phys on the MDIO bus*/
+
+ if ((phyPresent == NULL) ||
+ (maxPhyCount > IXP425_ETH_ACC_MII_MAX_ADDR))
+ {
+ return IX_FAIL;
+ }
+
+ /* fill the array */
+ for(i=0;
+ i<IXP425_ETH_ACC_MII_MAX_ADDR;
+ i++)
+ {
+ phyPresent[i] = FALSE;
+ }
+
+ /* iterate through the PHY addresses */
+ for(i=0;
+ maxPhyCount > 0 && i<IXP425_ETH_ACC_MII_MAX_ADDR;
+ i++)
+ {
+ ixEthMiiPhyId[i] = IX_ETH_MII_INVALID_PHY_ID;
+ if(ixEthAccMiiReadRtn(i,
+ IX_ETH_MII_CTRL_REG,
+ &regval) == IX_ETH_ACC_SUCCESS)
+ {
+ if((regval & 0xffff) != 0xffff)
+ {
+ maxPhyCount--;
+ /*Need to read the register twice here to flush PHY*/
+ ixEthAccMiiReadRtn(i, IX_ETH_MII_PHY_ID1_REG, &regvalId1);
+ ixEthAccMiiReadRtn(i, IX_ETH_MII_PHY_ID1_REG, &regvalId1);
+ ixEthAccMiiReadRtn(i, IX_ETH_MII_PHY_ID2_REG, &regvalId2);
+ ixEthMiiPhyId[i] = (regvalId1 << IX_ETH_MII_REG_SHL) | regvalId2;
+ if ((ixEthMiiPhyId[i] == IX_ETH_MII_KS8995_PHY_ID)
+ || (ixEthMiiPhyId[i] == IX_ETH_MII_LXT971_PHY_ID)
+ || (ixEthMiiPhyId[i] == IX_ETH_MII_LXT972_PHY_ID)
+ || (ixEthMiiPhyId[i] == IX_ETH_MII_LXT973_PHY_ID)
+ || (ixEthMiiPhyId[i] == IX_ETH_MII_LXT973A3_PHY_ID)
+ || (ixEthMiiPhyId[i] == IX_ETH_MII_LXT9785_PHY_ID)
+ )
+ {
+ /* supported phy */
+ phyPresent[i] = TRUE;
+ } /* end of if(ixEthMiiPhyId) */
+ else
+ {
+ if (ixEthMiiPhyId[i] != IX_ETH_MII_INVALID_PHY_ID)
+ {
+ /* unsupported phy */
+ ixOsalLog (IX_OSAL_LOG_LVL_ERROR,
+ IX_OSAL_LOG_DEV_STDOUT,
+ "ixEthMiiPhyScan : unexpected Mii PHY ID %8.8x\n",
+ ixEthMiiPhyId[i], 2, 3, 4, 5, 6);
+ ixEthMiiPhyId[i] = IX_ETH_MII_UNKNOWN_PHY_ID;
+ phyPresent[i] = TRUE;
+ }
+ }
+ }
+ }
+ }
+ return IX_SUCCESS;
+}
+
+/************************************************************
+ *
+ * Configure the PHY at the specified address
+ *
+ */
+PUBLIC IX_STATUS
+ixEthMiiPhyConfig(UINT32 phyAddr,
+ BOOL speed100,
+ BOOL fullDuplex,
+ BOOL autonegotiate)
+{
+ UINT16 regval=0;
+
+ /* parameter check */
+ if ((phyAddr < IXP425_ETH_ACC_MII_MAX_ADDR) &&
+ (ixEthMiiPhyId[phyAddr] != IX_ETH_MII_INVALID_PHY_ID))
+ {
+ /*
+ * set the control register
+ */
+ if(autonegotiate)
+ {
+ regval |= IX_ETH_MII_CR_AUTO_EN | IX_ETH_MII_CR_RESTART;
+ }
+ else
+ {
+ if(speed100)
+ {
+ regval |= IX_ETH_MII_CR_100;
+ }
+ if(fullDuplex)
+ {
+ regval |= IX_ETH_MII_CR_FDX;
+ }
+ } /* end of if-else() */
+ if (ixEthAccMiiWriteRtn(phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ regval) == IX_ETH_ACC_SUCCESS)
+ {
+ return IX_SUCCESS;
+ }
+ } /* end of if(phyAddr) */
+ return IX_FAIL;
+}
+
+/******************************************************************
+ *
+ * Enable the PHY Loopback at the specified address
+ */
+PUBLIC IX_STATUS
+ixEthMiiPhyLoopbackEnable (UINT32 phyAddr)
+{
+ UINT16 regval ;
+
+ if ((phyAddr < IXP425_ETH_ACC_MII_MAX_ADDR) &&
+ (IX_ETH_MII_INVALID_PHY_ID != ixEthMiiPhyId[phyAddr]))
+ {
+ /* read/write the control register */
+ if(ixEthAccMiiReadRtn (phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ &regval)
+ == IX_ETH_ACC_SUCCESS)
+ {
+ if(ixEthAccMiiWriteRtn (phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ regval | IX_ETH_MII_CR_LOOPBACK)
+ == IX_ETH_ACC_SUCCESS)
+ {
+ return IX_SUCCESS;
+ }
+ }
+ }
+ return IX_FAIL;
+}
+
+/******************************************************************
+ *
+ * Disable the PHY Loopback at the specified address
+ */
+PUBLIC IX_STATUS
+ixEthMiiPhyLoopbackDisable (UINT32 phyAddr)
+{
+ UINT16 regval ;
+
+ if ((phyAddr < IXP425_ETH_ACC_MII_MAX_ADDR) &&
+ (IX_ETH_MII_INVALID_PHY_ID != ixEthMiiPhyId[phyAddr]))
+ {
+ /* read/write the control register */
+ if(ixEthAccMiiReadRtn (phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ &regval)
+ == IX_ETH_ACC_SUCCESS)
+ {
+ if(ixEthAccMiiWriteRtn (phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ regval & (~IX_ETH_MII_CR_LOOPBACK))
+ == IX_ETH_ACC_SUCCESS)
+ {
+ return IX_SUCCESS;
+ }
+ }
+ }
+ return IX_FAIL;
+}
+
+/******************************************************************
+ *
+ * Reset the PHY at the specified address
+ */
+PUBLIC IX_STATUS
+ixEthMiiPhyReset(UINT32 phyAddr)
+{
+ UINT32 timeout;
+ UINT16 regval;
+
+ if ((phyAddr < IXP425_ETH_ACC_MII_MAX_ADDR) &&
+ (ixEthMiiPhyId[phyAddr] != IX_ETH_MII_INVALID_PHY_ID))
+ {
+ if ((ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT971_PHY_ID) ||
+ (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT972_PHY_ID) ||
+ (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT973_PHY_ID) ||
+ (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT973A3_PHY_ID) ||
+ (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT9785_PHY_ID)
+ )
+ {
+ /* use the control register to reset the phy */
+ ixEthAccMiiWriteRtn(phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ IX_ETH_MII_CR_RESET);
+
+ /* poll until the reset bit is cleared */
+ timeout = 0;
+ do
+ {
+ ixOsalSleep (IX_ETH_MII_RESET_POLL_MS);
+
+ /* read the control register and check for timeout */
+ ixEthAccMiiReadRtn(phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ &regval);
+ if ((regval & IX_ETH_MII_CR_RESET) == 0)
+ {
+ /* timeout bit is self-cleared */
+ break;
+ }
+ timeout += IX_ETH_MII_RESET_POLL_MS;
+ }
+ while (timeout < IX_ETH_MII_RESET_DELAY_MS);
+
+ /* check for timeout */
+ if (timeout >= IX_ETH_MII_RESET_DELAY_MS)
+ {
+ ixEthAccMiiWriteRtn(phyAddr, IX_ETH_MII_CTRL_REG,
+ IX_ETH_MII_CR_NORM_EN);
+ return IX_FAIL;
+ }
+
+ return IX_SUCCESS;
+ } /* end of if(ixEthMiiPhyId) */
+ else if (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_KS8995_PHY_ID)
+ {
+ /* reset bit is reserved, just reset the control register */
+ ixEthAccMiiWriteRtn(phyAddr, IX_ETH_MII_CTRL_REG,
+ IX_ETH_MII_CR_NORM_EN);
+ return IX_SUCCESS;
+ }
+ else
+ {
+ /* unknown PHY, set the control register reset bit,
+ * wait 2 s. and clear the control register.
+ */
+ ixEthAccMiiWriteRtn(phyAddr, IX_ETH_MII_CTRL_REG,
+ IX_ETH_MII_CR_RESET);
+
+ ixOsalSleep (IX_ETH_MII_RESET_DELAY_MS);
+
+ ixEthAccMiiWriteRtn(phyAddr, IX_ETH_MII_CTRL_REG,
+ IX_ETH_MII_CR_NORM_EN);
+ return IX_SUCCESS;
+ } /* end of if-else(ixEthMiiPhyId) */
+ } /* end of if(phyAddr) */
+ return IX_FAIL;
+}
+
+/*****************************************************************
+ *
+ * Link state query functions
+ */
+
+PUBLIC IX_STATUS
+ixEthMiiLinkStatus(UINT32 phyAddr,
+ BOOL *linkUp,
+ BOOL *speed100,
+ BOOL *fullDuplex,
+ BOOL *autoneg)
+{
+ UINT16 ctrlRegval, statRegval, regval, regval4, regval5;
+
+ /* check the parameters */
+ if ((linkUp == NULL) ||
+ (speed100 == NULL) ||
+ (fullDuplex == NULL) ||
+ (autoneg == NULL))
+ {
+ return IX_FAIL;
+ }
+
+ *linkUp = FALSE;
+ *speed100 = FALSE;
+ *fullDuplex = FALSE;
+ *autoneg = FALSE;
+
+ if ((phyAddr < IXP425_ETH_ACC_MII_MAX_ADDR) &&
+ (ixEthMiiPhyId[phyAddr] != IX_ETH_MII_INVALID_PHY_ID))
+ {
+ if ((ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT971_PHY_ID) ||
+ (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT972_PHY_ID) ||
+ (ixEthMiiPhyId[phyAddr] == IX_ETH_MII_LXT9785_PHY_ID)
+ )
+ {
+ /* --------------------------------------------------*/
+ /* Retrieve information from PHY specific register */
+ /* --------------------------------------------------*/
+ if (ixEthAccMiiReadRtn(phyAddr,
+ IX_ETH_MII_STAT2_REG,
+ &regval) != IX_ETH_ACC_SUCCESS)
+ {
+ return IX_FAIL;
+ }
+ *linkUp = ((regval & IX_ETH_MII_SR2_LINK) != 0);
+ *speed100 = ((regval & IX_ETH_MII_SR2_100) != 0);
+ *fullDuplex = ((regval & IX_ETH_MII_SR2_FD) != 0);
+ *autoneg = ((regval & IX_ETH_MII_SR2_AUTO) != 0);
+ return IX_SUCCESS;
+ } /* end of if(ixEthMiiPhyId) */
+ else
+ {
+ /* ----------------------------------------------------*/
+ /* Retrieve information from status and ctrl registers */
+ /* ----------------------------------------------------*/
+ if (ixEthAccMiiReadRtn(phyAddr,
+ IX_ETH_MII_CTRL_REG,
+ &ctrlRegval) != IX_ETH_ACC_SUCCESS)
+ {
+ return IX_FAIL;
+ }
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_MII_STAT_REG, &statRegval);
+
+ *linkUp = ((statRegval & IX_ETH_MII_SR_LINK_STATUS) != 0);
+ if (*linkUp)
+ {
+ *autoneg = ((ctrlRegval & IX_ETH_MII_CR_AUTO_EN) != 0) &&
+ ((statRegval & IX_ETH_MII_SR_AUTO_SEL) != 0) &&
+ ((statRegval & IX_ETH_MII_SR_AUTO_NEG) != 0);
+
+ if (*autoneg)
+ {
+ /* mask the current stat values with the capabilities */
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_MII_AN_ADS_REG, &regval4);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_MII_AN_PRTN_REG, &regval5);
+ /* merge the flags from the 3 registers */
+ regval = (statRegval & ((regval4 & regval5) << 6));
+ /* initialise from status register values */
+ if ((regval & IX_ETH_MII_SR_TX_FULL_DPX) != 0)
+ {
+ /* 100 Base X full dplx */
+ *speed100 = TRUE;
+ *fullDuplex = TRUE;
+ return IX_SUCCESS;
+ }
+ if ((regval & IX_ETH_MII_SR_TX_HALF_DPX) != 0)
+ {
+ /* 100 Base X half dplx */
+ *speed100 = TRUE;
+ return IX_SUCCESS;
+ }
+ if ((regval & IX_ETH_MII_SR_10T_FULL_DPX) != 0)
+ {
+ /* 10 mb full dplx */
+ *fullDuplex = TRUE;
+ return IX_SUCCESS;
+ }
+ if ((regval & IX_ETH_MII_SR_10T_HALF_DPX) != 0)
+ {
+ /* 10 mb half dplx */
+ return IX_SUCCESS;
+ }
+ } /* end of if(autoneg) */
+ else
+ {
+ /* autonegotiate not complete, return setup parameters */
+ *speed100 = ((ctrlRegval & IX_ETH_MII_CR_100) != 0);
+ *fullDuplex = ((ctrlRegval & IX_ETH_MII_CR_FDX) != 0);
+ }
+ } /* end of if(linkUp) */
+ } /* end of if-else(ixEthMiiPhyId) */
+ } /* end of if(phyAddr) */
+ else
+ {
+ return IX_FAIL;
+ } /* end of if-else(phyAddr) */
+ return IX_SUCCESS;
+}
+
+/*****************************************************************
+ *
+ * Link state display functions
+ */
+
+PUBLIC IX_STATUS
+ixEthMiiPhyShow (UINT32 phyAddr)
+{
+ BOOL linkUp, speed100, fullDuplex, autoneg;
+ UINT16 cregval;
+ UINT16 sregval;
+
+
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_MII_STAT_REG, &sregval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_MII_CTRL_REG, &cregval);
+
+ /* get link information */
+ if (ixEthMiiLinkStatus(phyAddr,
+ &linkUp,
+ &speed100,
+ &fullDuplex,
+ &autoneg) != IX_ETH_ACC_SUCCESS)
+ {
+ printf("PHY Status unknown\n");
+ return IX_FAIL;
+ }
+
+ printf("PHY ID [phyAddr]: %8.8x\n",ixEthMiiPhyId[phyAddr]);
+ printf( " Status reg: %4.4x\n",sregval);
+ printf( " control reg: %4.4x\n",cregval);
+ /* display link information */
+ printf("PHY Status:\n");
+ printf(" Link is %s\n",
+ (linkUp ? "Up" : "Down"));
+ if((sregval & IX_ETH_MII_SR_REMOTE_FAULT) != 0)
+ {
+ printf(" Remote fault detected\n");
+ }
+ printf(" Auto Negotiation %s\n",
+ (autoneg ? "Completed" : "Not Completed"));
+
+ printf("PHY Configuration:\n");
+ printf(" Speed %sMb/s\n",
+ (speed100 ? "100" : "10"));
+ printf(" %s Duplex\n",
+ (fullDuplex ? "Full" : "Half"));
+ printf(" Auto Negotiation %s\n",
+ (autoneg ? "Enabled" : "Disabled"));
+ return IX_SUCCESS;
+}
+