xllp_ethernet.c

Xcale270Bsp包,wince平台

    access.

  Global Register Modified: 
    None. 

  Input Arguments:
    XLLP_UINT8_T value  - the value that will be written to the register
    XLLP_UINT32_T offset - offset to the register

  Output Arguments:
    None
          
  Return Value: 
    None

*******************************************************************************/

static
void XllpEthernetWriteByte(XLLP_UINT8_T value, XLLP_UINT32_T offset)
{
    P_XLLP_VUINT8_T ioRegsP = (P_XLLP_VUINT8_T)XllpEthernetGetPointerToIORegistersBase();  // Get pointer to I/O space

    *(ioRegsP + offset) = value;
}

/******************************************************************************

  Function Name: 
    XllpEthernetDisplayTxStatus

  Description: 
    This function displays the bit settings for the Transmit Status Word

  Global Register Modified: 
    None. 

  Input Arguments:
    XLLP_UINT8_T value  - the value that will be written to the register
    XLLP_UINT32_T offset - offset to the register

  Output Arguments:
    None
          
  Return Value: 
    None

*******************************************************************************/

void XllpEthernetDisplayTxStatus(void)
{
    XLLP_UINT16_T ephSR;

    // Get the transmit status.
    XllpEthernetSelectRegisterBank (BANK2);
    XllpEthernetWriteWord(XLLP_LAN91C111_PTR_READ | XLLP_LAN91C111_PTR_AUTO_INCR, XLLP_LAN91C111_POINTER);
    ephSR = XllpEthernetReadWord16(XLLP_LAN91C111_DATA_HIGH);

    // Display the error bits.
    if (ephSR & XLLP_LAN91C111_EPHSR_ERRORS)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Transmit Status: %x", ephSR);
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_SNGL_COL)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Single Collision Detected");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_MUL_COL)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Multiple Collisions Detected");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_16COL)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: 16 Collisions Reached");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_SQET)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Signal Quality Error");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_TX_DEFR)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Transmit Deferred");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_LATCOL)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Late Collision");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_LOST_CARR)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Lost Carrier");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_EXC_DEF)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Excessive Deferral");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_LINK_OK)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Link Test Failed");
    }

    if (ephSR & XLLP_LAN91C111_EPHSR_TX_UNRN)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " LAN91C111: Transmission Underrun");
    }
}

/******************************************************************************

  Function Name: 
    XllpEthernetGetRxIntFlag

  Description: 
    This routine sets or cleares a receive interrupt status flag. 

  Global Register Modified: 
    None. 

  Input Arguments:
    XLLP_BOOL_T rxIntFlag - a value that is used to set or clear the 
    receive interrupt status flag

  Output Arguments:
    None
          
  Return Value: 
    None

*******************************************************************************/

static
void XllpEthernetSetRxIntFlag (XLLP_BOOL_T rxIntFlag)
{
    RxFlag = rxIntFlag;
}

/******************************************************************************

  Function Name: 
    XllpEthernetGetRxIntFlag

  Description: 
    This routine reads a status of the receive interrupt flag, and can be 
    used by the test to monitor if the receive interrupt took place

  Global Register Modified: 
    None. 

  Input Arguments:
    None.

  Output Arguments:
    P_XLLP_UINT16_T rxIntStatus - the receive interrupt status flag 
          
  Return Value: 
    None

*******************************************************************************/

void XllpEthernetGetRxIntFlag (P_XLLP_UINT16_T rxIntStatus)
{
    *rxIntStatus = RxFlag;
}

/******************************************************************************

  Function Name: 
    XllpEthernetReadEEPROM

  Description: 
    This routine reads a value from the EEPROM

  Global Register Modified: 
    None. 

  Input Arguments:
    XLLP_UINT16_T offset - Offset within the EEPROM to read.

  Output Arguments:
    None
          
  Return Value: 
    None

*******************************************************************************/

static
XLLP_UINT16_T XllpEthernetReadEEPROM(XLLP_UINT16_T offset)
{
    XLLP_UINT16_T   lanReg;                          // Temporary holding register
    XLLP_UINT32_T start, timebase = getTimebase();
    XLLP_UINT32_T timeout = XLLP_LAN91C111_TO_EEPROM * timebase;

    // Assume success.
    loggedError = 0;

    // Select Bank 2
    XllpEthernetSelectRegisterBank (BANK2);

    // Set the LAN91C111 pointer register to the specified EEPROM address.
	XllpEthernetWriteWord(offset, XLLP_LAN91C111_POINTER);

    // Select Bank 1
    XllpEthernetSelectRegisterBank (BANK1);

    // Read the Control Register.
    lanReg = XllpEthernetReadWord(XLLP_LAN91C111_CONTROL);

    // The LAN91C111 reads the Configuration, Base and Individual Address, and
    // STORE writes the Configuration and Base registers. Also when set it will 
    // read the EEPROM and update relevant registers with its contents. This bit
    // then Clears upon completing the operation.
    lanReg |= (XLLP_LAN91C111_CTR_RELOAD | XLLP_LAN91C111_CTR_EEPROM);

    // Store the data to EEPROM.
    XllpEthernetWriteWord16(lanReg, XLLP_LAN91C111_CONTROL);

    // Prepare for timeout by getting the initial time interval.
    start = TimerRegBaseP->oscr0;
    // Verify that the data was read successfully. This assumes Bank 1 has
    // been selected from the previous operation.
    while (1)
    {
        // Read the Control Register.
        lanReg = XllpEthernetReadWord(XLLP_LAN91C111_CONTROL);

        // Only interested in the STORE and RELOAD bits.
        lanReg = lanReg & (XLLP_UINT16_T)(XLLP_LAN91C111_CTR_STORE | XLLP_LAN91C111_CTR_RELOAD);

        // Complete when the STORE and RELOAD bits are cleared.
        if (0 == lanReg)
        {
            break;
        }

        // Get the current time interval.
        if ((getDelta(TimerRegBaseP, start)) > timeout)
        {
            DM_CwDbgPrintf(DM_CW_LAN91C111_1, " Timeout reading EEPROM");
            LOGERROR(&loggedError, 
                    ERR_L_LAN91C111, ERR_S_EEPROM, ERR_T_TIMEOUT, 
                    0, 0, 0);
            return (0);
        }
    }

    // Read the EEPROM data and return.
    return (XllpEthernetReadWord(XLLP_LAN91C111_GEN_PURPOSE));
}

/******************************************************************************

  Function Name: 
    XllpEthernetWriteEEPROM

  Description: 
    This routine provides access to the 64 x 16-bit EEPROM attached to the
    LAN91C111.

  Global Register Modified: 
    None. 

  Input Arguments:
    XLLP_UINT16_T offset - Offset within the EEPROM to write.
    XLLP_UINT16_T value - Value to write into EEPROM.
          
  Output Arguments:
    None
          
  Return Value: 
    None

*******************************************************************************/

static
void XllpEthernetWriteEEPROM(XLLP_UINT16_T offset, XLLP_UINT16_T value)
{
    XLLP_UINT16_T   lanReg;           // Temporary holding register
    XLLP_UINT32_T start, timebase = getTimebase();
    XLLP_UINT32_T timeout = XLLP_LAN91C111_TO_EEPROM * timebase;

    // Assume success.
    loggedError = 0;

    // Select Bank 2
    XllpEthernetSelectRegisterBank (BANK2);

    // Set the LAN91C111 pointer register to the specified EEPROM address.
    XllpEthernetWriteWord(offset, XLLP_LAN91C111_POINTER);

    // Select Bank 1
    XllpEthernetSelectRegisterBank (BANK1);

    // Write the specified data to the EEPROM.
    XllpEthernetWriteWord(value, XLLP_LAN91C111_GEN_PURPOSE);

    // Read the Control Register. This assumes Bank1 is selected.
    lanReg = XllpEthernetReadWord(XLLP_LAN91C111_CONTROL);
  
    // The STORE LAN91C111 bit when set, stores the contents of all relevant
    // registers in the serial EEPROM. This bit is cleared upon completing
    // the operation.
    //
    // Note: When an EEPROM access is in progress the STORE and RELOAD bits
    // will be read back as high. The remaining 14 bits of this registers will
    // be invalid. During this time, attempted read/write operations, other
    // than polling the EEPROM status, will NOT have any effect the internal
    // registers. The CPU can resume accesses to the LAN91C111 after both bits
    // are low. A worst case RELOAD operation initated by RESET or by software
    // takes less than 750 usec in either mode.
    lanReg |= (XLLP_LAN91C111_CTR_STORE | XLLP_LAN91C111_CTR_EEPROM);

    // Store the data to EEPROM. This assumes Bank 1 is selected.
    XllpEthernetWriteWord16(lanReg, XLLP_LAN91C111_CONTROL);

    // Prepare for timeout by getting the initial time interval.
//    start = ostCtxP->getTimer_fnp(ostCtxP);
    start = TimerRegBaseP->oscr0;

    // Verify that the data was read successfully. This assumes Bank 1 has
    // been selected from the previous operation.
    while (1)
    {
        // Read the Control Register.
        lanReg = XllpEthernetReadWord(XLLP_LAN91C111_CONTROL);
        // Only interested in the STORE and RELOAD bits.
        lanReg &= (XLLP_LAN91C111_CTR_STORE | XLLP_LAN91C111_CTR_RELOAD);

        // Complete when the STORE and RELOAD bits are cleared.
        if (0 == lanReg)
        {
            break;
        }

        // Get the current time interval.
        if ((getDelta(TimerRegBaseP, start)) > timeout)
        {
            DM_CwDbgPrintf(DM_CW_LAN91C111_1, " Timeout writing EEPROM");
            LOGERROR(&loggedError, 
                     ERR_L_LAN91C111, ERR_S_EEPROM, ERR_T_TIMEOUT, 
                     0, 0, 0);
            return;
        }
    }
}

/******************************************************************************

  Function Name: 
    XllpEthernetGetEEPROMMACAddress

  Description: 
    This routine return the MAC address stored in the EEPROM.

  Global Register Modified: 
    None 

  Input Arguments:
    P_XLLP_UINT16_T macAddressP - pointer to an array of tree 16-bit words

  Output Arguments:
    None
          
  Return Value: 
    XLLP_UINT32_T - error code in case of failure reading the EEPROM, zero if success.

*******************************************************************************/

XLLP_UINT32_T XllpEthernetGetEEPROMMACAddress(P_XLLP_UINT16_T macAddressP)
{
    // Assume success.
    loggedError = 0;

    DM_CwDbgPrintf(DM_CW_LAN91C111_0, " Reading MAC address from EEPROM");

    // WARNING: This routine changes the selected Bank register.
    macAddressP[0] = XllpEthernetReadEEPROM(EEPROM_MAC_OFFSET_1);
    if (loggedError)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " Timeout reading EEPROM");
        // Error reading the EEPROM.
        LOGERROR(&loggedError, 
                 ERR_L_LAN91C111, ERR_S_BAD_MAC, ERR_T_UNEXPECTED, 
                 macAddressP[0], 0, 0);
        return (loggedError);
    }

    macAddressP[1] = XllpEthernetReadEEPROM(EEPROM_MAC_OFFSET_2);
    if (loggedError)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " Timeout reading EEPROM");
        // Error reading the EEPROM.
        LOGERROR(&loggedError, 
                 ERR_L_LAN91C111, ERR_S_BAD_MAC, ERR_T_UNEXPECTED, 
                 macAddressP[1], 0, 0);
        return (loggedError);
    }

    macAddressP[2] = XllpEthernetReadEEPROM(EEPROM_MAC_OFFSET_3);
    if (loggedError)
    {
        DM_CwDbgPrintf(DM_CW_LAN91C111_1, " Timeout reading EEPROM");
        // Error reading the EEPROM.
        LOGERROR(&loggedError, 
                 ERR_L_LAN91C111, ERR_S_BAD_MAC, ERR_T_UNEXPECTED, 
                 macAddressP[2], 0, 0);
        return (loggedError);
    }

    DM_CwDbgPrintf(DM_CW_LAN91C111_0,
                   " EEPROM LAN91C111 MAC Address: %02X-%02X-%02X-%02X-%02X-%02X",