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path: root/drivers/net/npe/IxEthAccMii.c
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Diffstat (limited to 'drivers/net/npe/IxEthAccMii.c')
-rw-r--r--drivers/net/npe/IxEthAccMii.c410
1 files changed, 410 insertions, 0 deletions
diff --git a/drivers/net/npe/IxEthAccMii.c b/drivers/net/npe/IxEthAccMii.c
new file mode 100644
index 0000000..d282aa6
--- /dev/null
+++ b/drivers/net/npe/IxEthAccMii.c
@@ -0,0 +1,410 @@
+/**
+ * @file IxEthAccMii.c
+ *
+ * @author Intel Corporation
+ * @date
+ *
+ * @brief MII control functions
+ *
+ * Design Notes:
+ *
+ * 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 "IxEthAcc_p.h"
+#include "IxEthAccMac_p.h"
+#include "IxEthAccMii_p.h"
+
+
+PRIVATE UINT32 miiBaseAddressVirt;
+PRIVATE IxOsalMutex miiAccessLock;
+
+PUBLIC UINT32 ixEthAccMiiRetryCount = IX_ETH_ACC_MII_TIMEOUT_10TH_SECS;
+PUBLIC UINT32 ixEthAccMiiAccessTimeout = IX_ETH_ACC_MII_10TH_SEC_IN_MILLIS;
+
+/* -----------------------------------
+ * private function prototypes
+ */
+PRIVATE void
+ixEthAccMdioCmdWrite(UINT32 mdioCommand);
+
+PRIVATE void
+ixEthAccMdioCmdRead(UINT32 *data);
+
+PRIVATE void
+ixEthAccMdioStatusRead(UINT32 *data);
+
+
+PRIVATE void
+ixEthAccMdioCmdWrite(UINT32 mdioCommand)
+{
+ REG_WRITE(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_1,
+ mdioCommand & 0xff);
+
+ REG_WRITE(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_2,
+ (mdioCommand >> 8) & 0xff);
+
+ REG_WRITE(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_3,
+ (mdioCommand >> 16) & 0xff);
+
+ REG_WRITE(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_4,
+ (mdioCommand >> 24) & 0xff);
+}
+
+PRIVATE void
+ixEthAccMdioCmdRead(UINT32 *data)
+{
+ UINT32 regval;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_1,
+ regval);
+
+ *data = regval & 0xff;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_2,
+ regval);
+
+ *data |= (regval & 0xff) << 8;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_3,
+ regval);
+
+ *data |= (regval & 0xff) << 16;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_CMD_4,
+ regval);
+
+ *data |= (regval & 0xff) << 24;
+
+}
+
+PRIVATE void
+ixEthAccMdioStatusRead(UINT32 *data)
+{
+ UINT32 regval;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_STS_1,
+ regval);
+
+ *data = regval & 0xff;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_STS_2,
+ regval);
+
+ *data |= (regval & 0xff) << 8;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_STS_3,
+ regval);
+
+ *data |= (regval & 0xff) << 16;
+
+ REG_READ(miiBaseAddressVirt,
+ IX_ETH_ACC_MAC_MDIO_STS_4,
+ regval);
+
+ *data |= (regval & 0xff) << 24;
+
+}
+
+
+/********************************************************************
+ * ixEthAccMiiInit
+ */
+IxEthAccStatus
+ixEthAccMiiInit()
+{
+ if(ixOsalMutexInit(&miiAccessLock)!= IX_SUCCESS)
+ {
+ return IX_ETH_ACC_FAIL;
+ }
+
+ miiBaseAddressVirt = (UINT32) IX_OSAL_MEM_MAP(IX_ETH_ACC_MAC_0_BASE, IX_OSAL_IXP400_ETHA_MAP_SIZE);
+
+ if (miiBaseAddressVirt == 0)
+ {
+ ixOsalLog(IX_OSAL_LOG_LVL_FATAL,
+ IX_OSAL_LOG_DEV_STDOUT,
+ "EthAcc: Could not map MII I/O mapped memory\n",
+ 0, 0, 0, 0, 0, 0);
+
+ return IX_ETH_ACC_FAIL;
+ }
+
+ return IX_ETH_ACC_SUCCESS;
+}
+
+void
+ixEthAccMiiUnload(void)
+{
+ IX_OSAL_MEM_UNMAP(miiBaseAddressVirt);
+
+ miiBaseAddressVirt = 0;
+}
+
+PUBLIC IxEthAccStatus
+ixEthAccMiiAccessTimeoutSet(UINT32 timeout, UINT32 retryCount)
+{
+ if (retryCount < 1) return IX_ETH_ACC_FAIL;
+
+ ixEthAccMiiRetryCount = retryCount;
+ ixEthAccMiiAccessTimeout = timeout;
+
+ return IX_ETH_ACC_SUCCESS;
+}
+
+/*********************************************************************
+ * ixEthAccMiiReadRtn - read a 16 bit value from a PHY
+ */
+IxEthAccStatus
+ixEthAccMiiReadRtn (UINT8 phyAddr,
+ UINT8 phyReg,
+ UINT16 *value)
+{
+ UINT32 mdioCommand;
+ UINT32 regval;
+ UINT32 miiTimeout;
+
+ if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED())
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ if ((phyAddr >= IXP425_ETH_ACC_MII_MAX_ADDR)
+ || (phyReg >= IXP425_ETH_ACC_MII_MAX_REG))
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ if (value == NULL)
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ ixOsalMutexLock(&miiAccessLock, IX_OSAL_WAIT_FOREVER);
+ mdioCommand = phyReg << IX_ETH_ACC_MII_REG_SHL
+ | phyAddr << IX_ETH_ACC_MII_ADDR_SHL;
+ mdioCommand |= IX_ETH_ACC_MII_GO;
+
+ ixEthAccMdioCmdWrite(mdioCommand);
+
+ miiTimeout = ixEthAccMiiRetryCount;
+
+ while(miiTimeout)
+ {
+
+ ixEthAccMdioCmdRead(&regval);
+
+ if((regval & IX_ETH_ACC_MII_GO) == 0x0)
+ {
+ break;
+ }
+ /* Sleep for a while */
+ ixOsalSleep(ixEthAccMiiAccessTimeout);
+ miiTimeout--;
+ }
+
+
+
+ if(miiTimeout == 0)
+ {
+ ixOsalMutexUnlock(&miiAccessLock);
+ *value = 0xffff;
+ return IX_ETH_ACC_FAIL;
+ }
+
+
+ ixEthAccMdioStatusRead(&regval);
+ if(regval & IX_ETH_ACC_MII_READ_FAIL)
+ {
+ ixOsalMutexUnlock(&miiAccessLock);
+ *value = 0xffff;
+ return IX_ETH_ACC_FAIL;
+ }
+
+ *value = regval & 0xffff;
+ ixOsalMutexUnlock(&miiAccessLock);
+ return IX_ETH_ACC_SUCCESS;
+
+}
+
+
+/*********************************************************************
+ * ixEthAccMiiWriteRtn - write a 16 bit value to a PHY
+ */
+IxEthAccStatus
+ixEthAccMiiWriteRtn (UINT8 phyAddr,
+ UINT8 phyReg,
+ UINT16 value)
+{
+ UINT32 mdioCommand;
+ UINT32 regval;
+ UINT16 readVal;
+ UINT32 miiTimeout;
+
+ if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED())
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ if ((phyAddr >= IXP425_ETH_ACC_MII_MAX_ADDR)
+ || (phyReg >= IXP425_ETH_ACC_MII_MAX_REG))
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ /* ensure that a PHY is present at this address */
+ if(ixEthAccMiiReadRtn(phyAddr,
+ IX_ETH_ACC_MII_CTRL_REG,
+ &readVal) != IX_ETH_ACC_SUCCESS)
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ ixOsalMutexLock(&miiAccessLock, IX_OSAL_WAIT_FOREVER);
+ mdioCommand = phyReg << IX_ETH_ACC_MII_REG_SHL
+ | phyAddr << IX_ETH_ACC_MII_ADDR_SHL ;
+ mdioCommand |= IX_ETH_ACC_MII_GO | IX_ETH_ACC_MII_WRITE | value;
+
+ ixEthAccMdioCmdWrite(mdioCommand);
+
+ miiTimeout = ixEthAccMiiRetryCount;
+
+ while(miiTimeout)
+ {
+
+ ixEthAccMdioCmdRead(&regval);
+
+ /*The "GO" bit is reset to 0 when the write completes*/
+ if((regval & IX_ETH_ACC_MII_GO) == 0x0)
+ {
+ break;
+ }
+ /* Sleep for a while */
+ ixOsalSleep(ixEthAccMiiAccessTimeout);
+ miiTimeout--;
+ }
+
+ ixOsalMutexUnlock(&miiAccessLock);
+ if(miiTimeout == 0)
+ {
+ return IX_ETH_ACC_FAIL;
+ }
+ return IX_ETH_ACC_SUCCESS;
+}
+
+
+/*****************************************************************
+ *
+ * Phy query functions
+ *
+ */
+IxEthAccStatus
+ixEthAccMiiStatsShow (UINT32 phyAddr)
+{
+ UINT16 regval;
+ printf("Regisers on PHY at address 0x%x\n", phyAddr);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_CTRL_REG, &regval);
+ printf(" Control Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_STAT_REG, &regval);
+ printf(" Status Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_PHY_ID1_REG, &regval);
+ printf(" PHY ID1 Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_PHY_ID2_REG, &regval);
+ printf(" PHY ID2 Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_AN_ADS_REG, &regval);
+ printf(" Auto Neg ADS Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_AN_PRTN_REG, &regval);
+ printf(" Auto Neg Partner Ability Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_AN_EXP_REG, &regval);
+ printf(" Auto Neg Expansion Register : 0x%4.4x\n", regval);
+ ixEthAccMiiReadRtn(phyAddr, IX_ETH_ACC_MII_AN_NEXT_REG, &regval);
+ printf(" Auto Neg Next Register : 0x%4.4x\n", regval);
+
+ return IX_ETH_ACC_SUCCESS;
+}
+
+
+/*****************************************************************
+ *
+ * Interface query functions
+ *
+ */
+IxEthAccStatus
+ixEthAccMdioShow (void)
+{
+ UINT32 regval;
+
+ if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED())
+ {
+ return (IX_ETH_ACC_FAIL);
+ }
+
+ ixOsalMutexLock(&miiAccessLock, IX_OSAL_WAIT_FOREVER);
+ ixEthAccMdioCmdRead(&regval);
+ ixOsalMutexUnlock(&miiAccessLock);
+
+ printf("MDIO command register\n");
+ printf(" Go bit : 0x%x\n", (regval & BIT(31)) >> 31);
+ printf(" MDIO Write : 0x%x\n", (regval & BIT(26)) >> 26);
+ printf(" PHY address : 0x%x\n", (regval >> 21) & 0x1f);
+ printf(" Reg address : 0x%x\n", (regval >> 16) & 0x1f);
+
+ ixOsalMutexLock(&miiAccessLock, IX_OSAL_WAIT_FOREVER);
+ ixEthAccMdioStatusRead(&regval);
+ ixOsalMutexUnlock(&miiAccessLock);
+
+ printf("MDIO status register\n");
+ printf(" Read OK : 0x%x\n", (regval & BIT(31)) >> 31);
+ printf(" Read Data : 0x%x\n", (regval >> 16) & 0xff);
+
+ return IX_ETH_ACC_SUCCESS;
+}
+