sysgei8254xend.c

Freescale MPC85xx BSP (8555/8541)。绝对可用的。

    UINT32         pciFunc,     /* store a PCI function number */
    UINT32         vendorId,    /* store a PCI vendor ID */
    UINT32         deviceId,    /* store a PCI device ID */
    UINT8          revisionId,  /* store a PCI revision ID */
    UINT32         boardType,   /* board type */
    int            pciSysNum    /* PCI system number */
    )
    {
    UINT32         memBaseLo;   /* temporary BAR storage */
    UINT32         memBaseHi;
    UINT32         flashBase;
    UINT8          irq;         /* store PCI interrupt line (IRQ) number */

    GEI_RESOURCE * pReso;       /* alias extended resource table */

    /* number of physical units exceeded the number supported ? */

    if (geiUnits >= GEI_MAX_DEV)
        {
        return (ERROR);
        }

    /* BAR information will be saved in the extended resource table */

    pReso = (GEI_RESOURCE *)(geiPciResources[geiUnits].pExtended);

    if (pciSysNum != CDS85XX_PCI_1_BUS && pciSysNum != CDS85XX_PCI_2_BUS)
        return ERROR;

    geiPciResources[geiUnits].pciSysNum = pciSysNum;

    /*
     * BAR0: [32:17]: memory base
     *       [16:4] : read as "0";
     *       [3]    : 0 - device is not prefetchable
     *       [2:1]  : 00b - 32-bit address space, or
     *                01b - 64-bit address space
     *       [0]    : 0 - memory map decoded
     *
     * BAR1: if BAR0[2:1] == 00b, optional flash memory base
     *       if BAR0[2:1] == 01b, high portion of memory base 
     *                            for 64-bit address space
     *
     * BAR2: if BAR0[2:1] == 01b, optional flash memory base
     *       if BAR0[2:1] == 00b, behaves as BAR-1 when BAR-0 is
     *                            a 32-bit value
     */

    pciConfigInLong  (pciBus, pciDevice, pciFunc,
                      PCI_CFG_BASE_ADDRESS_0, &memBaseLo);

    pReso->adr64 = ((memBaseLo & BAR0_64_BIT) == BAR0_64_BIT)
                   ? TRUE : FALSE;

    if (pReso->adr64)
        {
        pciConfigInLong  (pciBus, pciDevice, pciFunc,
                          PCI_CFG_BASE_ADDRESS_1, &memBaseHi);

        pciConfigInLong  (pciBus, pciDevice, pciFunc,
                          PCI_CFG_BASE_ADDRESS_2, &flashBase);
        }
    else
        {
        memBaseHi = 0x0;

        pciConfigInLong  (pciBus, pciDevice, pciFunc,
                          PCI_CFG_BASE_ADDRESS_1, &flashBase);
        }

    memBaseLo &= PCI_MEMBASE_MASK;
    flashBase &= PCI_MEMBASE_MASK;

    /* get the device's interrupt line (IRQ) number */

    pciConfigInByte (pciBus, pciDevice, pciFunc,
                     PCI_CFG_DEV_INT_LINE, &irq);

    /* update the board-specific resource tables */

    pReso->memBaseLow  = memBaseLo;
    pReso->memBaseHigh = memBaseHi;
    pReso->flashBase   = flashBase;


    geiPciResources[geiUnits].irq        = irq;
    geiPciResources[geiUnits].irqvec     = irq;

    geiPciResources[geiUnits].vendorID   = vendorId;
    geiPciResources[geiUnits].deviceID   = deviceId;
    geiPciResources[geiUnits].revisionID = revisionId;
    geiPciResources[geiUnits].boardType  = boardType;

   /* the following support legacy interfaces and data structures */

    geiPciResources[geiUnits].pciBus     = pciBus;
    geiPciResources[geiUnits].pciDevice  = pciDevice;
    geiPciResources[geiUnits].pciFunc    = pciFunc;

    /* enable mapped memory and IO decoders */

    pciConfigOutWord (pciBus, pciDevice, pciFunc, PCI_CFG_COMMAND,
                      PCI_CMD_MEM_ENABLE | PCI_CMD_IO_ENABLE |
                      PCI_CMD_MASTER_ENABLE);

    /* disable sleep mode */

    pciConfigOutByte (pciBus, pciDevice, pciFunc, PCI_CFG_MODE,
                      SLEEP_MODE_DIS);

    ++geiUnits;  /* increment number of units initialized */

    return (OK);
    }

/******************************************************************************
*
* sysGei8254xEndLoad - create load string and load a gei driver.
*
* This routine will be invoked by the MUX for the purpose of loading an
* gei82543End (gei) device with initial parameters.  This routine is
* constructed as an interface wrapper for the driver load routine.  Thus,
* the arguments and return values are consistent with any xxxEndLoad()
* routine defined for an END driver and the MUX API.
*
* INTERNAL
* The muxDevLoad() operation calls this routine twice.  A zero length
* <pParamStr> parameter string indicates that this is the first time
* through this routine.  The driver load routine should return the
* driver name in <pParamStr>.
*
* On the second pass though this routine, the initialization parameter
* string is constructed.  Note that on the second pass, the <pParamStr>
* consists of a colon-delimited END device unit number and rudimentary
* initialization string (often empty) constructed from entries in the
* BSP END Device Table such that:
*
*     <pParamStr> = "<unit>:<default initialization string>"
*
* In the process of building the rest of <pParamStr>, the prepended unit
* number must be preserved and passed to the driver load routine.  The
* <default initialization string> portion mentioned above is discarded,
* but future versions of this routine may use it.
*
* The complete gei82543End driver load string has format:
*
*     <unit>:<shMemBase>:<shMemSize>:<rxDesNum>:<txDesNum>:<usrFlags>:
*     <offset>:<mtu>
*
* RETURNS: An END object pointer, or NULL on error, or 0 and the name of the
* device if the <pParamStr> was NULL.
*
* SEE ALSO: gei82543EndLoad()
*/

END_OBJ * sysGei8254xEndLoad
    (
    char *    pParamStr,   /* ptr to initialization parameter string */
    void *    unused       /* unused optional argument */
    )
    {
    END_OBJ * pEnd;
    char      paramStr [END_INIT_STR_MAX];

    if (strlen (pParamStr) == 0)
        {
        /* PASS (1)
         * The driver load routine returns the driver name in <pParamStr>.
         */

        pEnd = gei82543EndLoad (pParamStr);
        }
    else
        {
        /* PASS (2)
         * The END <unit> number is prepended to <pParamStr>.  Construct
         * the rest of the driver load string based on physical devices
         * discovered in sys543PciInit().  When this routine is called
         * to process a particular END <unit> number, use the END <unit> as
         * an index into the PCI "resources" table to build the driver
         * parameter string.
         */

        GEI_RESOURCE *  pReso;

        char * holder = NULL;
        int    unit   = atoi (strtok_r (pParamStr, ":", &holder));

        /* is there a PCI resource associated with this END unit ? */

        if (unit >= geiUnits)
            {
            return NULL;
            }

        pReso = (GEI_RESOURCE *)(geiPciResources[unit].pExtended);

        /* finish off the initialization parameter string */

        sprintf (paramStr,"%d:0x%x:0x%x:0x%x:0x%x:0x%x:%d:%d",
                 unit,                          /* END unit number */
                 pReso->shMemBase,              /* share memory base */
                 pReso->shMemSize,              /* share memory size */
                 pReso->rxDesNum,               /* RX Descriptor Number*/
                 pReso->txDesNum,               /* TX Descriptor Number*/
                 pReso->usrFlags,               /* user's flags */
                 GEI_OFFSET_VALUE,              /* offset value */
                 GEI_JUMBO_MTU_VALUE            /* mtu value */
                );

        if ((pEnd = gei82543EndLoad (paramStr)) == (END_OBJ *)NULL)
            {
            printf ("ERROR: sysGei8254xEndLoad fails to load gei %d\n", unit);
            }
        }

    return (pEnd);
    }

/*****************************************************************************
*
* sys82543BoardInit - Adaptor initialization for 8254x chip
*
* This routine is expected to perform any adapter-specific or target-specific
* initialization that must be done prior to initializing the 8254x chip.
*
* The 82543 driver calls this routine from the driver load routine before
* any other routines.
*
* RETURNS: OK or ERROR
*/
STATUS sys82543BoardInit
    (
    int            unit,      /* unit number */
    ADAPTOR_INFO * pBoard     /* board information for the GEI driver */
    )
    {
    PCI_BOARD_RESOURCE * pRsrc;
    GEI_RESOURCE *       pReso;
    BOOL                 lanB = FALSE;

    /* sanity check */

    if (unit >= geiUnits)
        return (ERROR);

    pRsrc = &geiPciResources[unit];
    pReso = (GEI_RESOURCE *)(pRsrc->pExtended);

    if (pRsrc->boardType != PRO1000_543_BOARD && 
        pRsrc->boardType != PRO1000_544_BOARD &&
        pRsrc->boardType != PRO1000_546_BOARD) 
         return ERROR;

    if (pRsrc->pciSysNum != CDS85XX_PCI_1_BUS &&
        pRsrc->pciSysNum != CDS85XX_PCI_2_BUS)
        {
        printf ("ERROR: UNKNOWN PCI system number %d in gei unit %d \n", 
                 pRsrc->pciSysNum, unit);

        return ERROR;
        }

    /* configure the PCI system number */

    sysPciConfigEnable (pRsrc->pciSysNum);
        
    if (pRsrc->boardType == PRO1000_546_BOARD)
        {
        UINT32 eecd;
        UINT16 devId;        

        if (!((eecd = GEI_SYS_READ_REG(unit, INTEL_82543GC_EECD)) & EECD_PRES_BIT))
            {
            printf ("ERROR: gei unit %d eeprom not presented\n", unit);
            return ERROR;
            }

        pReso->eepromSize = (eecd & EECD_SIZE_BIT)? 256 : 64;

        /* detect if this is one of 82546EB dual ports */
       
        pciConfigInWord (pRsrc->pciBus, pRsrc->pciDevice, pRsrc->pciFunc,
                          PCI_CFG_DEVICE_ID, &devId);
        
        if (devId == PRO1000_546_PCI_DEVICE_ID_XT ||
            devId == PRO1000_546_PCI_DEVICE_ID_MF) 
	    {        
            UINT8 headerType;

            pciConfigInByte (pRsrc->pciBus, pRsrc->pciDevice, pRsrc->pciFunc,
                             PCI_CFG_HEADER_TYPE, &headerType);

            if (headerType == 0x80)
  	        lanB = (pRsrc->pciFunc == 1)? TRUE : FALSE;

            else if (pRsrc->pciFunc != 0)
 	        {
                printf ("Error in detecting 82546 dual port: header type =%2d, "
                         "pci func=%2d\n", (UINT32)headerType, (UINT32)(pRsrc->pciFunc));
 	        }
            }
        }

    /* perform EEPROM checksum */

    if (sys543eepromCheckSum (unit) != OK)
        {
        printf ("ERROR: gei unit=%d, EEPROM checksum error!\n", unit);
        }

    /* get the Ethernet Address from eeprom */

    if (sys543EtherAdrGet (unit) == OK)
        {
        if (pRsrc->boardType == PRO1000_546_BOARD && lanB == TRUE)
           {
           int   ix;

	   /* update LANB address */

           for (ix = 5; ix >= 0; ix--)
	        {
		if (pReso->enetAddr[ix] != 0xff)
		    {
                    pReso->enetAddr[ix]++;
                    break;
                    }
                else
                    pReso->enetAddr[ix] = 0;
                }
           }
        }
    else
         printf ("ERROR: gei unit=%d, Invalid Ethernet Address!\n", unit);
 
    /* get the initialization control word 1 (ICW1) in EEPROM */

    pReso->eeprom_icw1 = sys543eepromReadWord (unit, EEPROM_ICW1);

    /* get the initialization control word 2 (ICW2) in EEPROM */

    pReso->eeprom_icw2 = sys543eepromReadWord (unit, EEPROM_ICW2);

    /* initializes the board information structure */

    pBoard->boardType   = pRsrc->boardType;
    pBoard->vector      = pRsrc->irq;

    pBoard->regBaseHigh = pReso->memBaseHigh;
    pBoard->regBaseLow  = PCI_MEMIO2LOCAL(pReso->memBaseLow);
    pBoard->flashBase   = PCI_MEMIO2LOCAL(pReso->flashBase);
    pBoard->adr64       = pReso->adr64;

    pBoard->intEnable   = sys543IntEnable;
    pBoard->intDisable  = sys543IntDisable;
    pBoard->intAck      = sys543IntAck;
  
    /* Intel Copper-based adapter is based on GMII interface */    

    pBoard->phyType     = GEI_PHY_GMII_TYPE;  

    if (pBoard->boardType == PRO1000_544_BOARD && 
                             geiResources[unit].useShortCable)   
        {
        miiPhyOptFuncSet ((FUNCPTR)sys544PhyPreInit);
        }

    pBoard->phySpecInit = sys543PhySpecRegsInit;

    /* BSP specific  
     * delayFunc is BSP specific. We prefer a higher time resolution delay 
     * delayUnit is the time of ns elapsed when calling delayFunc ().
     */

    pBoard->delayFunc     = (FUNCPTR) sysGei543UsDelay;
    pBoard->delayUnit     = 1000; /* 1000 ns */

    /* BSP specific
     * phyDelayRtn is used as a delay function for PHY detection, if not set,
     * taskDelay will be used.
     */

    pBoard->phyDelayRtn = (FUNCPTR) taskDelay;
    pBoard->phyMaxDelay = MII_PHY_DEF_DELAY;
    pBoard->phyDelayParm = 5;