* Update Intel IXP4xx support

- Add IXP4xx NPE ethernet MAC support
- Add support for Intel IXDPG425 board
- Add support for Prodrive PDNB3 board
- Add IRQ support
Patch by Stefan Roese, 23 May 2006

[This patch does not include cpu/ixp/npe/IxNpeMicrocode.c which still
 sufferes from licensing issues. Blame Intel.]

1 files changed, 497 insertions, 0 deletions

diff --git a/cpu/ixp/npe/IxEthMii.c b/cpu/ixp/npe/IxEthMii.c
new file mode 100644
index 0000000..4d92f17
--- /dev/null
+++ b/cpu/ixp/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;
+}
+