linux/crypto/ocf/kirkwood/mvHal/mv_hal/pci-if/pci_util/mvPciUtils.c

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

/* includes */
#include "mvPciUtils.h"

#include "ctrlEnv/mvCtrlEnvLib.h"

/* #define MV_DEBUG */
/* defines  */
#ifdef MV_DEBUG
	#define DB(x)	x
	#define mvOsPrintf printf
#else
	#define DB(x)
#endif

/*
This module only support scanning of Header type 00h of pci devices
There is no suppotr for Header type 01h of pci devices  ( PCI bridges )
*/


static MV_STATUS pciDetectDevice(MV_U32 pciIf,
   								 MV_U32 bus,
   								 MV_U32 dev,
   								 MV_U32 func,
								 MV_PCI_DEVICE *pPciAgent);

static MV_U32 pciDetectDeviceBars(MV_U32 pciIf,
									MV_U32 bus,
									MV_U32 dev,
									MV_U32 func,
									MV_PCI_DEVICE *pPciAgent);






/*******************************************************************************
* mvPciScan - Scan a PCI interface bus
*
* DESCRIPTION:
* Performs a full scan on a PCI interface and returns all possible details
* on the agents found on the bus.
*
* INPUT:
*       pciIf       - PCI Interface
*       pPciAgents 	- Pointer to an Array of the pci agents to be detected
*		pPciAgentsNum - pPciAgents array maximum number of elements
*
* OUTPUT:
*       pPciAgents - Array of the pci agents detected on the bus
*		pPciAgentsNum - Number of pci agents detected on the bus
*
* RETURN:
*       MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/

MV_STATUS mvPciScan(MV_U32 pciIf,
					MV_PCI_DEVICE *pPciAgents,
					MV_U32 *pPciAgentsNum)
{

	MV_U32 devIndex,funcIndex=0,busIndex=0,detectedDevNum=0;
    MV_U32 localBus=mvPciIfLocalBusNumGet(pciIf);
    MV_PCI_DEVICE *pPciDevice;
	MV_PCI_DEVICE *pMainDevice;

	DB(mvOsPrintf("mvPciScan: PCI interface num %d\n", pciIf));
	/* Parameter checking   */
	if (pciIf >= mvCtrlPexMaxIfGet())
	{
		DB(mvOsPrintf("mvPciScan: ERR. Invalid PCI interface num %d\n", pciIf));
		return MV_BAD_PARAM;
	}
	if (NULL == pPciAgents)
	{
		DB(mvOsPrintf("mvPciScan: ERR. pPciAgents=NULL \n"));
		return MV_BAD_PARAM;
	}
	if (NULL == pPciAgentsNum)
	{
		DB(mvOsPrintf("mvPciScan: ERR. pPciAgentsNum=NULL \n"));
		return MV_BAD_PARAM;
	}


	DB(mvOsPrintf("mvPciScan: PCI interface num %d mvPciMasterEnable\n", pciIf));
	/* Master enable the MV PCI master */
	if (MV_OK != mvPciIfMasterEnable(pciIf,MV_TRUE))
	{
		DB(mvOsPrintf("mvPciScan: ERR. mvPciMasterEnable failed  \n"));
		return MV_ERROR;

	}

	DB(mvOsPrintf("mvPciScan: PCI interface num scan%d\n", pciIf));

	/* go through all busses */
	for (busIndex=localBus ; busIndex < MAX_PCI_BUSSES ; busIndex++)
	{
		/* go through all possible devices on the local bus */
		for (devIndex=0 ; devIndex < MAX_PCI_DEVICES ; devIndex++)
		{
			/* always start with function equal to zero */
			funcIndex=0;

			pPciDevice=&pPciAgents[detectedDevNum];
			DB(mvOsPrintf("mvPciScan: PCI interface num scan%d:%d\n", busIndex, devIndex));

			if (MV_ERROR == pciDetectDevice(pciIf,
										   busIndex,
										   devIndex,
										   funcIndex,
										   pPciDevice))
			{
				/* no device detected , try the next address */
				continue;
			}

			/* We are here ! means we have detected a device*/
			/* always we start with only one function per device */
			pMainDevice = pPciDevice;
			pPciDevice->funtionsNum = 1;


			/* move on */
			detectedDevNum++;


			/* check if we have no more room for a new device */
			if (detectedDevNum == *pPciAgentsNum)
			{
				DB(mvOsPrintf("mvPciScan: ERR. array passed too small \n"));
				return MV_ERROR;
			}

			/* check the detected device if it is a multi functional device then
			scan all device functions*/
			if (pPciDevice->isMultiFunction == MV_TRUE)
			{
				/* start with function number 1 because we have already detected
				function 0 */
				for (funcIndex=1; funcIndex<MAX_PCI_FUNCS ; funcIndex++)
				{
					pPciDevice=&pPciAgents[detectedDevNum];

					if (MV_ERROR == pciDetectDevice(pciIf,
												   busIndex,
												   devIndex,
												   funcIndex,
												   pPciDevice))
					{
						/* no device detected means no more functions !*/
						continue;
					}
					/* We are here ! means we have detected a device */

					/* move on */
					pMainDevice->funtionsNum++;
					detectedDevNum++;

					/* check if we have no more room for a new device */
					if (detectedDevNum == *pPciAgentsNum)
					{
						DB(mvOsPrintf("mvPciScan: ERR. Array too small\n"));
						return MV_ERROR;
					}


				}
			}

		}

	}

	/* return the number of devices actually detected on the bus ! */
	*pPciAgentsNum = detectedDevNum;

	return MV_OK;

}


/*******************************************************************************
* pciDetectDevice - Detect a pci device parameters
*
* DESCRIPTION:
*	This function detect if a pci agent exist on certain address !
*   and if exists then it fills all possible information on the
*   agent
*
* INPUT:
*       pciIf       - PCI Interface
*		bus		-	Bus number
*		dev		- 	Device number
*		func	-	Function number
*
*
*
* OUTPUT:
*       pPciAgent - pointer to the pci agent filled with its information
*
* RETURN:
*       MV_ERROR if no device , MV_OK otherwise
*
*******************************************************************************/

static MV_STATUS pciDetectDevice(MV_U32 pciIf,
   								 MV_U32 bus,
   								 MV_U32 dev,
   								 MV_U32 func,
								 MV_PCI_DEVICE *pPciAgent)
{
	MV_U32 pciData;

	/* no Parameters checking ! because it is static function and it is assumed
	that all parameters were checked in the calling function */


	/* Try read the PCI Vendor ID and Device ID */

	/*  We will scan only ourselves and the PCI slots that exist on the
		board, because we may have a case that we have one slot that has
		a Cardbus connector, and because CardBus answers all IDsels we want
		to scan only this slot and ourseleves.

	*/
	#if defined(MV_INCLUDE_PCI)
	if ((PCI_IF_TYPE_CONVEN_PCIX == mvPciIfTypeGet(pciIf)) &&
					(DB_88F5181_DDR1_PRPMC != mvBoardIdGet()) &&
					(DB_88F5181_DDR1_PEXPCI != mvBoardIdGet()) &&
					(DB_88F5181_DDR1_MNG != mvBoardIdGet()))
    	{

			if (mvBoardIsOurPciSlot(bus, dev) == MV_FALSE)
			{
				return MV_ERROR;
			}
	}
	#endif /* defined(MV_INCLUDE_PCI) */

	pciData = mvPciIfConfigRead(pciIf, bus,dev,func, PCI_DEVICE_AND_VENDOR_ID);

	if (PCI_ERROR_CODE == pciData)
	{
		/* no device exist */
		return MV_ERROR;
	}

	/* we are here ! means a device is detected */

	/* fill basic information */
	pPciAgent->busNumber=bus;
	pPciAgent->deviceNum=dev;
	pPciAgent->function=func;

	/* Fill the PCI Vendor ID and Device ID */

	pPciAgent->venID = (pciData & PDVIR_VEN_ID_MASK) >> PDVIR_VEN_ID_OFFS;
	pPciAgent->deviceID = (pciData & PDVIR_DEV_ID_MASK) >> PDVIR_DEV_ID_OFFS;

	/* Read Status and command */
	pciData = mvPciIfConfigRead(pciIf,
							  bus,dev,func,
							  PCI_STATUS_AND_COMMAND);


	/* Fill related Status and Command information*/

	if (pciData & PSCR_TAR_FAST_BB)
	{
		pPciAgent->isFastB2BCapable = MV_TRUE;
	}
	else
	{
		pPciAgent->isFastB2BCapable = MV_FALSE;
	}

	if (pciData & PSCR_CAP_LIST)
	{
		pPciAgent->isCapListSupport=MV_TRUE;
	}
	else
	{
		pPciAgent->isCapListSupport=MV_FALSE;
	}

	if (pciData & PSCR_66MHZ_EN)
	{
		pPciAgent->is66MHZCapable=MV_TRUE;
	}
	else
	{
		pPciAgent->is66MHZCapable=MV_FALSE;
	}

	/* Read Class Code and Revision */
	pciData = mvPciIfConfigRead(pciIf,
							  bus,dev,func,
							  PCI_CLASS_CODE_AND_REVISION_ID);


	pPciAgent->baseClassCode =
		(pciData & PCCRIR_BASE_CLASS_MASK) >> PCCRIR_BASE_CLASS_OFFS;

	pPciAgent->subClassCode =
		(pciData & PCCRIR_SUB_CLASS_MASK) >> PCCRIR_SUB_CLASS_OFFS;

	pPciAgent->progIf =
		(pciData & PCCRIR_PROGIF_MASK) >> PCCRIR_PROGIF_OFFS;

	pPciAgent->revisionID =
		(pciData & PCCRIR_REVID_MASK) >> PCCRIR_REVID_OFFS;

	/* Read  PCI_BIST_HDR_TYPE_LAT_TMR_CACHE_LINE */
	pciData = mvPciIfConfigRead(pciIf,
							  bus,dev,func,
							  PCI_BIST_HDR_TYPE_LAT_TMR_CACHE_LINE);



	pPciAgent->pciCacheLine=
		(pciData & PBHTLTCLR_CACHELINE_MASK ) >> PBHTLTCLR_CACHELINE_OFFS;
	pPciAgent->pciLatencyTimer=
		(pciData & PBHTLTCLR_LATTIMER_MASK) >> PBHTLTCLR_LATTIMER_OFFS;

	switch (pciData & PBHTLTCLR_HEADER_MASK)
	{
	case PBHTLTCLR_HEADER_STANDARD:

		pPciAgent->pciHeader=MV_PCI_STANDARD;
		break;
	case PBHTLTCLR_HEADER_PCI2PCI_BRIDGE:

		pPciAgent->pciHeader=MV_PCI_PCI2PCI_BRIDGE;
		break;

	}

	if (pciData & PBHTLTCLR_MULTI_FUNC)
	{
		pPciAgent->isMultiFunction=MV_TRUE;
	}
	else
	{
		pPciAgent->isMultiFunction=MV_FALSE;
	}

	if (pciData & PBHTLTCLR_BISTCAP)
	{
		pPciAgent->isBISTCapable=MV_TRUE;
	}
	else
	{
		pPciAgent->isBISTCapable=MV_FALSE;
	}


	/* read this device pci bars */

	pciDetectDeviceBars(pciIf,
					  bus,dev,func,
	 				 pPciAgent);


	/* check if we are bridge*/
	if ((pPciAgent->baseClassCode == PCI_BRIDGE_CLASS)&&
		(pPciAgent->subClassCode == P2P_BRIDGE_SUB_CLASS_CODE))
	{

		/* Read  P2P_BUSSES_NUM */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  P2P_BUSSES_NUM);

		pPciAgent->p2pPrimBusNum =
			(pciData & PBM_PRIME_BUS_NUM_MASK) >> PBM_PRIME_BUS_NUM_OFFS;

		pPciAgent->p2pSecBusNum =
			(pciData & PBM_SEC_BUS_NUM_MASK) >> PBM_SEC_BUS_NUM_OFFS;

		pPciAgent->p2pSubBusNum =
			(pciData & PBM_SUB_BUS_NUM_MASK) >> PBM_SUB_BUS_NUM_OFFS;

		pPciAgent->p2pSecLatencyTimer =
			(pciData & PBM_SEC_LAT_TMR_MASK) >> PBM_SEC_LAT_TMR_OFFS;

		/* Read  P2P_IO_BASE_LIMIT_SEC_STATUS */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  P2P_IO_BASE_LIMIT_SEC_STATUS);

		pPciAgent->p2pSecStatus =
			(pciData & PIBLSS_SEC_STATUS_MASK) >> PIBLSS_SEC_STATUS_OFFS;


		pPciAgent->p2pIObase =
			(pciData & PIBLSS_IO_BASE_MASK) << PIBLSS_IO_LIMIT_OFFS;

		/* clear low address (should be zero)*/
		pPciAgent->p2pIObase &= PIBLSS_HIGH_ADDR_MASK;

		pPciAgent->p2pIOLimit =
			(pciData & PIBLSS_IO_LIMIT_MASK);

		/* fill low address with 0xfff */
		pPciAgent->p2pIOLimit |= PIBLSS_LOW_ADDR_MASK;


		switch ((pciData & PIBLSS_ADD_CAP_MASK) >> PIBLSS_ADD_CAP_OFFS)
		{
		case PIBLSS_ADD_CAP_16BIT:

			pPciAgent->bIO32 = MV_FALSE;

			break;
		case PIBLSS_ADD_CAP_32BIT:

			pPciAgent->bIO32 = MV_TRUE;

			/* Read  P2P_IO_BASE_LIMIT_UPPER_16 */
			pciData = mvPciIfConfigRead(pciIf,
									  bus,dev,func,
									  P2P_IO_BASE_LIMIT_UPPER_16);

			pPciAgent->p2pIObase |=
				(pciData & PRBU_IO_UPP_BASE_MASK) << PRBU_IO_UPP_LIMIT_OFFS;


			pPciAgent->p2pIOLimit |=
				(pciData & PRBU_IO_UPP_LIMIT_MASK);

			break;

		}


		/* Read  P2P_MEM_BASE_LIMIT */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  P2P_MEM_BASE_LIMIT);

		pPciAgent->p2pMemBase =
			(pciData & PMBL_MEM_BASE_MASK) << PMBL_MEM_LIMIT_OFFS;

		/* clear low address */
		pPciAgent->p2pMemBase &= PMBL_HIGH_ADDR_MASK;

		pPciAgent->p2pMemLimit =
			(pciData & PMBL_MEM_LIMIT_MASK);

		/* add 0xfffff */
		pPciAgent->p2pMemLimit |= PMBL_LOW_ADDR_MASK;


		/* Read  P2P_PREF_MEM_BASE_LIMIT */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  P2P_PREF_MEM_BASE_LIMIT);


		pPciAgent->p2pPrefMemBase =
			(pciData & PRMBL_PREF_MEM_BASE_MASK) << PRMBL_PREF_MEM_LIMIT_OFFS;

		/* get high address only */
		pPciAgent->p2pPrefMemBase &= PRMBL_HIGH_ADDR_MASK;



		pPciAgent->p2pPrefMemLimit =
			(pciData & PRMBL_PREF_MEM_LIMIT_MASK);

		/* add 0xfffff */
		pPciAgent->p2pPrefMemLimit |= PRMBL_LOW_ADDR_MASK;

		switch (pciData & PRMBL_ADD_CAP_MASK)
		{
		case PRMBL_ADD_CAP_32BIT:

			pPciAgent->bPrefMem64 = MV_FALSE;

			/* Read  P2P_PREF_BASE_UPPER_32 */
			pPciAgent->p2pPrefBaseUpper32Bits = 0;

			/* Read  P2P_PREF_LIMIT_UPPER_32 */
			pPciAgent->p2pPrefLimitUpper32Bits = 0;

			break;
		case PRMBL_ADD_CAP_64BIT:

			pPciAgent->bPrefMem64 = MV_TRUE;

			/* Read  P2P_PREF_BASE_UPPER_32 */
			pPciAgent->p2pPrefBaseUpper32Bits = mvPciIfConfigRead(pciIf,
									  bus,dev,func,
									  P2P_PREF_BASE_UPPER_32);

			/* Read  P2P_PREF_LIMIT_UPPER_32 */
			pPciAgent->p2pPrefLimitUpper32Bits = mvPciIfConfigRead(pciIf,
									  bus,dev,func,
									  P2P_PREF_LIMIT_UPPER_32);

			break;

		}

	}
	else /* no bridge */
	{
		/* Read  PCI_SUBSYS_ID_AND_SUBSYS_VENDOR_ID */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  PCI_SUBSYS_ID_AND_SUBSYS_VENDOR_ID);


		pPciAgent->subSysVenID =
			(pciData & PSISVIR_VENID_MASK) >> PSISVIR_VENID_OFFS;
		pPciAgent->subSysID =
			(pciData & PSISVIR_DEVID_MASK) >> PSISVIR_DEVID_OFFS;


		/* Read  PCI_EXPANSION_ROM_BASE_ADDR_REG */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  PCI_EXPANSION_ROM_BASE_ADDR_REG);


		if (pciData & PERBAR_EXPROMEN)
		{
			pPciAgent->isExpRom = MV_TRUE;
		}
		else
		{
			pPciAgent->isExpRom = MV_FALSE;
		}

		pPciAgent->expRomAddr =
			(pciData & PERBAR_BASE_MASK) >> PERBAR_BASE_OFFS;

	}


	if (MV_TRUE == pPciAgent->isCapListSupport)
	{
		/* Read  PCI_CAPABILTY_LIST_POINTER */
		pciData = mvPciIfConfigRead(pciIf,
								  bus,dev,func,
								  PCI_CAPABILTY_LIST_POINTER);

		pPciAgent->capListPointer =
			(pciData & PCLPR_CAPPTR_MASK) >> PCLPR_CAPPTR_OFFS;

	}

	/* Read  PCI_INTERRUPT_PIN_AND_LINE */
	pciData = mvPciIfConfigRead(pciIf,
							  bus,dev,func,
							  PCI_INTERRUPT_PIN_AND_LINE);


	pPciAgent->irqLine=
		(pciData & PIPLR_INTLINE_MASK) >> PIPLR_INTLINE_OFFS;

	pPciAgent->intPin=
		(MV_PCI_INT_PIN)(pciData & PIPLR_INTPIN_MASK) >> PIPLR_INTPIN_OFFS;

	pPciAgent->minGrant=
		(pciData & PIPLR_MINGRANT_MASK) >> PIPLR_MINGRANT_OFFS;
	pPciAgent->maxLatency=
		(pciData & PIPLR_MAXLATEN_MASK) >> PIPLR_MAXLATEN_OFFS;

	mvPciClassNameGet(pPciAgent->baseClassCode,
					  (MV_8 *)pPciAgent->type);

	return MV_OK;


}

/*******************************************************************************
* pciDetectDeviceBars - Detect a pci device bars
*
* DESCRIPTION:
*	This function detects all pci agent bars
*
* INPUT:
*       pciIf       - PCI Interface
*		bus		-	Bus number
*		dev		- 	Device number
*		func	-	Function number
*
*
*
* OUTPUT:
*       pPciAgent - pointer to the pci agent filled with its information
*
* RETURN:
*       detected bars number
*
*******************************************************************************/
static MV_U32 pciDetectDeviceBars(MV_U32 pciIf,
									MV_U32 bus,
									MV_U32 dev,
									MV_U32 func,
									MV_PCI_DEVICE *pPciAgent)
{
	MV_U32 pciData,barIndex,detectedBar=0;
	MV_U32 tmpBaseHigh=0,tmpBaseLow=0;
	MV_U32 pciMaxBars=0;

	pPciAgent->barsNum=0;

	/* check if we are bridge*/
	if ((pPciAgent->baseClassCode == PCI_BRIDGE_CLASS)&&
		(pPciAgent->subClassCode == P2P_BRIDGE_SUB_CLASS_CODE))
	{
		pciMaxBars = 2;
	}
	else /* no bridge */
	{
		pciMaxBars = 6;
	}

	/* read this device pci bars */
	for (barIndex = 0 ; barIndex < pciMaxBars ; barIndex++ )
	{
		/* Read  PCI_MEMORY_BAR_BASE_ADDR */
		tmpBaseLow = pciData = mvPciIfConfigRead(pciIf,
									   bus,dev,func,
						               PCI_MEMORY_BAR_BASE_ADDR(barIndex));

		pPciAgent->pciBar[detectedBar].barOffset =
			PCI_MEMORY_BAR_BASE_ADDR(barIndex);

		/* check if the bar is 32bit or 64bit bar */
		switch (pciData & PBBLR_TYPE_MASK)
		{
		case PBBLR_TYPE_32BIT_ADDR:
			pPciAgent->pciBar[detectedBar].barType = PCI_32BIT_BAR;
			break;
		case PBBLR_TYPE_64BIT_ADDR:
			pPciAgent->pciBar[detectedBar].barType = PCI_64BIT_BAR;
			break;

		}

		/* check if it is memory or IO bar */
		if (pciData & PBBLR_IOSPACE)
		{
			pPciAgent->pciBar[detectedBar].barMapping=PCI_IO_BAR;
		}
		else
		{
			pPciAgent->pciBar[detectedBar].barMapping=PCI_MEMORY_BAR;
		}

		/* if it is memory bar then check if it is prefetchable */
		if (PCI_MEMORY_BAR == pPciAgent->pciBar[detectedBar].barMapping)
		{
			if (pciData & PBBLR_PREFETCH_EN)
			{
				pPciAgent->pciBar[detectedBar].isPrefetchable = MV_TRUE;
			}
			else
			{
				pPciAgent->pciBar[detectedBar].isPrefetchable = MV_FALSE;
			}

            pPciAgent->pciBar[detectedBar].barBaseLow =
				pciData & PBBLR_MEM_BASE_MASK;


		}
		else /* IO Bar */
		{
			pPciAgent->pciBar[detectedBar].barBaseLow =
				pciData & PBBLR_IO_BASE_MASK;

		}

		pPciAgent->pciBar[detectedBar].barBaseHigh=0;

		if (PCI_64BIT_BAR == pPciAgent->pciBar[detectedBar].barType)
		{
			barIndex++;

			tmpBaseHigh = pPciAgent->pciBar[detectedBar].barBaseHigh =
				mvPciIfConfigRead(pciIf,
								bus,dev,func,
								PCI_MEMORY_BAR_BASE_ADDR(barIndex));


		}

		/* calculating full base address (64bit) */
		pPciAgent->pciBar[detectedBar].barBaseAddr =
			(MV_U64)pPciAgent->pciBar[detectedBar].barBaseHigh;

		pPciAgent->pciBar[detectedBar].barBaseAddr <<= 32;

		pPciAgent->pciBar[detectedBar].barBaseAddr |=
			(MV_U64)pPciAgent->pciBar[detectedBar].barBaseLow;



		/* get the sizes of the the bar */

		pPciAgent->pciBar[detectedBar].barSizeHigh=0;

		if ((PCI_64BIT_BAR == pPciAgent->pciBar[detectedBar].barType) &&
			(PCI_MEMORY_BAR == pPciAgent->pciBar[detectedBar].barMapping))

		{
			/* write oxffffffff to the bar to get the size */
			/* start with sizelow ( original value was saved in tmpBaseLow ) */
			mvPciIfConfigWrite(pciIf,
							bus,dev,func,
							PCI_MEMORY_BAR_BASE_ADDR(barIndex-1),
							0xffffffff);

			/* read size */
			pPciAgent->pciBar[detectedBar].barSizeLow =
				mvPciIfConfigRead(pciIf,
								bus,dev,func,
								PCI_MEMORY_BAR_BASE_ADDR(barIndex-1));



			/* restore original value */
			mvPciIfConfigWrite(pciIf,
							bus,dev,func,
							PCI_MEMORY_BAR_BASE_ADDR(barIndex-1),
							tmpBaseLow);


			/* now do the same for BaseHigh */

			/* write oxffffffff to the bar to get the size */
			mvPciIfConfigWrite(pciIf,
							bus,dev,func,
							PCI_MEMORY_BAR_BASE_ADDR(barIndex),
							0xffffffff);

			/* read size */
			pPciAgent->pciBar[detectedBar].barSizeHigh =
				mvPciIfConfigRead(pciIf,
								bus,dev,func,
								PCI_MEMORY_BAR_BASE_ADDR(barIndex));

			/* restore original value */
			mvPciIfConfigWrite(pciIf,
							bus,dev,func,
							PCI_MEMORY_BAR_BASE_ADDR(barIndex),
							tmpBaseHigh);

			if ((0 == pPciAgent->pciBar[detectedBar].barSizeLow)&&
				(0 == pPciAgent->pciBar[detectedBar].barSizeHigh))
			{
				/* this bar is not applicable for this device,
				   ignore all previous settings and check the next bar*/

				/* we though this was a 64bit bar , and it seems this
				   was wrong ! so decrement barIndex */
				barIndex--;
				continue;
			}

			/* calculate the full 64 bit size  */

			if (0 != pPciAgent->pciBar[detectedBar].barSizeHigh)
			{
				pPciAgent->pciBar[detectedBar].barSizeLow &= PBBLR_MEM_BASE_MASK;

				pPciAgent->pciBar[detectedBar].barSizeLow =
					~pPciAgent->pciBar[detectedBar].barSizeLow + 1;

				pPciAgent->pciBar[detectedBar].barSizeHigh = 0;

			}
			else
			{

				pPciAgent->pciBar[detectedBar].barSizeLow &= PBBLR_MEM_BASE_MASK;

				pPciAgent->pciBar[detectedBar].barSizeLow =
					~pPciAgent->pciBar[detectedBar].barSizeLow + 1;

				pPciAgent->pciBar[detectedBar].barSizeHigh = 0;

			}



		}
		else /* 32bit bar */
		{
			/* write oxffffffff to the bar to get the size */
			mvPciIfConfigWrite(pciIf,
							bus,dev,func,
							PCI_MEMORY_BAR_BASE_ADDR(barIndex),
							0xffffffff);

			/* read size */
			pPciAgent->pciBar[detectedBar].barSizeLow =
				mvPciIfConfigRead(pciIf,
								bus,dev,func,
								PCI_MEMORY_BAR_BASE_ADDR(barIndex));

			if (0 == pPciAgent->pciBar[detectedBar].barSizeLow)
			{
				/* this bar is not applicable for this device,
				   ignore all previous settings and check the next bar*/
				continue;
			}


			/* restore original value */
			mvPciIfConfigWrite(pciIf,
							bus,dev,func,
							PCI_MEMORY_BAR_BASE_ADDR(barIndex),
							tmpBaseLow);

		/* calculate size low */

			if (PCI_MEMORY_BAR == pPciAgent->pciBar[detectedBar].barMapping)
			{
				pPciAgent->pciBar[detectedBar].barSizeLow &= PBBLR_MEM_BASE_MASK;
			}
			else
			{
				pPciAgent->pciBar[detectedBar].barSizeLow &= PBBLR_IO_BASE_MASK;
			}

			pPciAgent->pciBar[detectedBar].barSizeLow =
				~pPciAgent->pciBar[detectedBar].barSizeLow + 1;

			pPciAgent->pciBar[detectedBar].barSizeHigh = 0;
			pPciAgent->pciBar[detectedBar].barSize =
				(MV_U64)pPciAgent->pciBar[detectedBar].barSizeLow;


		}

		/* we are here ! this means we have already detected a bar for
		this device , now move on */

		detectedBar++;
		pPciAgent->barsNum++;
	}

	return detectedBar;
}


/*******************************************************************************
* mvPciClassNameGet - get PCI  class name
*
* DESCRIPTION:
*		This function returns the PCI class name
*
* INPUT:
*       baseClassCode       - Base Class Code.
*
* OUTPUT:
*       pType - the class name
*
* RETURN:
*       MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPciClassNameGet(MV_U32 baseClassCode, MV_8 *pType)
{

    switch(baseClassCode)
    {
        case 0x0:
            strcpy(pType,"Old generation device");
            break;
        case 0x1:
            strcpy(pType,"Mass storage controller");
            break;
        case 0x2:
            strcpy(pType,"Network controller");
            break;
        case 0x3:
            strcpy(pType,"Display controller");
            break;
        case 0x4:
            strcpy(pType,"Multimedia device");
            break;
        case 0x5:
            strcpy(pType,"Memory controller");
            break;
        case 0x6:
            strcpy(pType,"Bridge Device");
            break;
        case 0x7:
            strcpy(pType,"Simple Communication controllers");
            break;
        case 0x8:
            strcpy(pType,"Base system peripherals");
            break;
        case 0x9:
            strcpy(pType,"Input Devices");
            break;
        case 0xa:
            strcpy(pType,"Docking stations");
            break;
        case 0xb:
            strcpy(pType,"Processors");
            break;
        case 0xc:
            strcpy(pType,"Serial bus controllers");
            break;
        case 0xd:
            strcpy(pType,"Wireless controllers");
            break;
        case 0xe:
            strcpy(pType,"Intelligent I/O controllers");
            break;
        case 0xf:
            strcpy(pType,"Satellite communication controllers");
            break;
        case 0x10:
            strcpy(pType,"Encryption/Decryption controllers");
            break;
        case 0x11:
            strcpy(pType,"Data acquisition and signal processing controllers");
            break;
        default:
            strcpy(pType,"Unknown device");
            break;
    }

	return MV_OK;

}