board/mv_feroceon/mv_hal/pex/mvPex.c

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#include "mvCommon.h"
#include "mvOs.h"
#include "ctrlEnv/mvCtrlEnvSpec.h"
#include "mvSysPexConfig.h"
#include "mvPexRegs.h"
/* #include "pci-if/mvPciIf.h" */
#include "mvPex.h"
#include "mvSysPex.h"

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

static MV_PEX_HAL_DATA pexHalData[MV_PEX_MAX_IF];

MV_STATUS mvPexInit(MV_U32 pexIf, MV_PEX_TYPE pexType, MV_PEX_HAL_DATA *halData)
{
	MV_PEX_MODE pexMode;
	MV_U32 regVal;
	MV_U32 status;
	MV_U16 ctrlModel, phyRegVal;

	mvOsMemcpy(&pexHalData[pexIf], halData, sizeof(MV_PEX_HAL_DATA));

	/* First implement Guideline (GL# PCI Express-2) Wrong Default Value    */
	/* to Transmitter Output Current (TXAMP) Relevant for: 88F5181-A1/B0/B1 */
	/* and 88F5281-B0 and above, 88F5182, 88F5082, 88F5181L, 88F6082/L      */
	ctrlModel = pexHalData[pexIf].ctrlModel;
	if ((ctrlModel != MV_1281_DEV_ID) &&
			(ctrlModel != MV_6281_DEV_ID) &&
			(ctrlModel != MV_6282_DEV_ID) &&
			(ctrlModel != MV_6280_DEV_ID) &&
			(ctrlModel != MV_6192_DEV_ID) &&
			(ctrlModel != MV_6190_DEV_ID) &&
			(ctrlModel != MV_6180_DEV_ID) &&
			(ctrlModel != MV_6183_DEV_ID) &&
			(ctrlModel != MV_6183L_DEV_ID) &&
			(ctrlModel != MV_78100_DEV_ID) &&
			(ctrlModel != MV_78200_DEV_ID) &&
			(ctrlModel != MV_76100_DEV_ID) &&
			(ctrlModel != MV_6323_DEV_ID) &&
			(ctrlModel != MV_6322_DEV_ID) &&
			(ctrlModel != MV_6321_DEV_ID) &&
			(ctrlModel != MV_78XX0_DEV_ID) &&
			(ctrlModel != MV_6510_DEV_ID) &&
			(ctrlModel != MV_6530_DEV_ID) && (ctrlModel != MV_6550_DEV_ID) && (ctrlModel != MV_6560_DEV_ID)) {

		/* Read current value of TXAMP */
		MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), 0x80820000);	/* Write the read command   */

		regVal = MV_REG_READ(PEX_PHY_ACCESS_REG(pexIf));	/* Extract the data         */

		/* Prepare new data for write */
		regVal &= ~0x7;	/* Clear bits [2:0]         */
		regVal |= 0x4;	/* Set the new value        */
		regVal &= ~0x80000000;	/* Set "write" command      */
		MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), regVal);	/* Write the write command  */
	} else {
		/* Implement 1.0V termination GL for 88F1281 device only */
		/* BIT0 - Common mode feedback */
		/* BIT3 - TxBuf, extra drive for 1.0V termination */
		if (ctrlModel == MV_1281_DEV_ID) {
			MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), 0x80860000);	/* Write the read command   */
			regVal = MV_REG_READ(0x41b00);	/* Extract the data         */
			regVal |= (BIT0 | BIT3);
			regVal &= ~0x80000000;	/* Set "write" command      */
			MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), regVal);	/* Write the write command  */

			MV_REG_WRITE(0x31b00, 0x80860000);	/* Write the read command   */
			regVal = MV_REG_READ(0x31b00);	/* Extract the data         */
			regVal |= (BIT0 | BIT3);
			regVal &= ~0x80000000;	/* Set "write" command      */
			MV_REG_WRITE(0x31b00, regVal);	/* Write the write command  */
		}
	}
	if ((ctrlModel == MV_6281_DEV_ID) ||
			(ctrlModel == MV_6282_DEV_ID) ||
			(ctrlModel == MV_6280_DEV_ID) ||
			(ctrlModel == MV_6192_DEV_ID) || (ctrlModel == MV_6190_DEV_ID) || (ctrlModel == MV_6180_DEV_ID)) {
		regVal = MV_REG_READ(0x100e4);	/* This register currently doesn't appear in the FS */
		regVal |= 0x3 << 25;
		MV_REG_WRITE(0x100e4, regVal);
	}

	if (ctrlModel == MV_6282_DEV_ID) {
		mvPexPhyRegRead(pexIf, 0x92, &phyRegVal);
		phyRegVal &= ~(0x80F0);
		phyRegVal |= 0x8080;
		mvPexPhyRegWrite(pexIf, 0x92, phyRegVal);
	} else if ((ctrlModel == MV_6510_DEV_ID) ||
			(ctrlModel == MV_6530_DEV_ID) || (ctrlModel == MV_6550_DEV_ID) || (ctrlModel == MV_6560_DEV_ID)) {
		mvPexPhyRegRead(pexIf, 0x92, &phyRegVal);
		phyRegVal &= ~(0x80F0);
		phyRegVal |= 0x8080;
		mvPexPhyRegWrite(pexIf, 0x92, phyRegVal);
	}

	if (mvPexModeGet(pexIf, &pexMode) != MV_OK) {
		mvOsPrintf("PEX init ERR. mvPexModeGet failed (pexType=%d)\n", pexMode.pexType);
		return MV_ERROR;
	}

	/* Check that required PEX type is the one set in reset time */
	if (pexType != pexMode.pexType) {
		/* No Link. Shut down the Phy */
		mvPexPhyPowerDown(pexIf);
		mvOsPrintf("PEX init ERR. PEX type sampled mismatch (%d,%d)\n", pexType, pexMode.pexType);
		return MV_ERROR;
	}

	if (MV_PEX_ROOT_COMPLEX == pexType) {
		mvPexLocalBusNumSet(pexIf, PEX_HOST_BUS_NUM(pexIf));
		mvPexLocalDevNumSet(pexIf, PEX_HOST_DEV_NUM(pexIf));

		/* Local device master Enable */
		mvPexMasterEnable(pexIf, MV_TRUE);

		/* Local device slave Enable */
		mvPexSlaveEnable(pexIf, mvPexLocalBusNumGet(pexIf), mvPexLocalDevNumGet(pexIf), MV_TRUE);
		/* Interrupt disable */
		status = MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_STATUS_AND_COMMAND));
		status |= PXSAC_INT_DIS;
		MV_REG_WRITE(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_STATUS_AND_COMMAND), status);
	} else {
		MV_REG_WRITE(PEX_DBG_CTRL_REG(pexIf), 0xF63F0C0);
	}

	mvSysPexCpuIfEnable(pexIf);
	/* now wait 1 ms to be sure the link is valid (spec compliant) */
	mvOsDelay(1);
	/* Check if we have link */
	if (MV_REG_READ(PEX_STATUS_REG(pexIf)) & PXSR_DL_DOWN) {
		mvOsPrintf("PEX%d interface detected no Link.\n", pexIf);
		return MV_NO_SUCH;
	}

	if (MV_PEX_WITDH_X1 == pexMode.pexWidth)
		mvOsPrintf("PEX%d interface detected Link X1\n", pexIf);
	else
		mvOsPrintf("PEX%d interface detected Link X4\n", pexIf);

#ifdef PCIE_VIRTUAL_BRIDGE_SUPPORT
	mvPexVrtBrgInit(pexIf);
#endif
	return MV_OK;
}

/*******************************************************************************
* mvPexModeGet - Get Pex Mode
*
* DESCRIPTION:
*
* INPUT:
*       pexIf   - PEX interface number.
*
* OUTPUT:
*       pexMode - Pex mode structure
*
* RETURN:
*       MV_OK on success , MV_ERROR otherwise
*
*******************************************************************************/
MV_U32 mvPexModeGet(MV_U32 pexIf, MV_PEX_MODE *pexMode)
{
	MV_U32 pexData;

	if (pexIf >= MV_PEX_MAX_IF)
		return MV_BAD_PARAM;

	/* Parameter checking   */
#if 0
	if (PEX_DEFAULT_IF != pexIf) {
		if (pexIf >= pexHalData[pexIf].maxPexIf) {
			mvOsPrintf("mvPexModeGet: ERR. Invalid PEX interface %d\n", pexIf);
			return MV_ERROR;
		}
	}
#endif
	pexData = MV_REG_READ(PEX_CTRL_REG(pexIf));

	switch (pexData & PXCR_DEV_TYPE_CTRL_MASK) {
	case PXCR_DEV_TYPE_CTRL_CMPLX:
		pexMode->pexType = MV_PEX_ROOT_COMPLEX;
		break;
	case PXCR_DEV_TYPE_CTRL_POINT:
		pexMode->pexType = MV_PEX_END_POINT;
		break;

	}

	/* Check if we have link */
	if (MV_REG_READ(PEX_STATUS_REG(pexIf)) & PXSR_DL_DOWN) {
		pexMode->pexLinkUp = MV_FALSE;

		/* If there is no link, the auto negotiation data is worthless */
		pexMode->pexWidth = MV_PEX_WITDH_INVALID;
	} else {
		pexMode->pexLinkUp = MV_TRUE;

		/* We have link. The link width is now valid */
		pexData = MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_LINK_CTRL_STAT_REG));
		pexMode->pexWidth = ((pexData & PXLCSR_NEG_LNK_WDTH_MASK) >> PXLCSR_NEG_LNK_WDTH_OFFS);
	}

	return MV_OK;
}

/* PEX configuration space read write */

/*******************************************************************************
* mvPexConfigRead - Read from configuration space
*
* DESCRIPTION:
*       This function performs a 32 bit read from PEX configuration space.
*       It supports both type 0 and type 1 of Configuration Transactions
*       (local and over bridge). In order to read from local bus segment, use
*       bus number retrieved from mvPexLocalBusNumGet(). Other bus numbers
*       will result configuration transaction of type 1 (over bridge).
*
* INPUT:
*       pexIf   - PEX interface number.
*       bus     - PEX segment bus number.
*       dev     - PEX device number.
*       func    - Function number.
*       regOffs - Register offset.
*
* OUTPUT:
*       None.
*
* RETURN:
*       32bit register data, 0xffffffff on error
*
*******************************************************************************/
MV_U32 mvPexConfigRead(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func, MV_U32 regOff)
{
#if defined(PCIE_VIRTUAL_BRIDGE_SUPPORT)
	return mvPexVrtBrgConfigRead(pexIf, bus, dev, func, regOff);
}

MV_U32 mvPexHwConfigRead(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func, MV_U32 regOff)
{
#endif
	MV_U32 pexData = 0;
	MV_U32 localDev, localBus;

	if (pexIf >= MV_PEX_MAX_IF)
		return 0xFFFFFFFF;

	/* Parameter checking   */
	if (PEX_DEFAULT_IF != pexIf) {
		if (pexIf >= pexHalData[pexIf].maxPexIf) {
			mvOsPrintf("mvPexConfigRead: ERR. Invalid PEX interface %d\n", pexIf);
			return 0xFFFFFFFF;
		}
	}

	if (dev >= MAX_PEX_DEVICES) {
		DB(mvOsPrintf("mvPexConfigRead: ERR. device number illigal %d\n", dev));
		return 0xFFFFFFFF;
	}

	if (func >= MAX_PEX_FUNCS) {
		DB(mvOsPrintf("mvPexConfigRead: ERR. function num illigal %d\n", func));
		return 0xFFFFFFFF;
	}

	if (bus >= MAX_PEX_BUSSES) {
		DB(mvOsPrintf("mvPexConfigRead: ERR. bus number illigal %d\n", bus));
		return MV_ERROR;
	}

	DB(mvOsPrintf("mvPexConfigRead: pexIf %d, bus %d, dev %d, func %d, regOff 0x%x\n",
		      pexIf, bus, dev, func, regOff));

	localDev = mvPexLocalDevNumGet(pexIf);
	localBus = mvPexLocalBusNumGet(pexIf);

	/* Speed up the process. In case on no link, return MV_ERROR */
	if ((dev != localDev) || (bus != localBus)) {
		pexData = MV_REG_READ(PEX_STATUS_REG(pexIf));

		if ((pexData & PXSR_DL_DOWN))
			return MV_ERROR;
	}

	/* in PCI Express we have only one device number */
	/* and this number is the first number we encounter
	   else that the localDev */
	/* spec pex define return on config read/write on any device */
	if (bus == localBus) {
		if (localDev == 0) {
			/* if local dev is 0 then the first number we encounter
			   after 0 is 1 */
			if ((dev != 1) && (dev != localDev))
				return MV_ERROR;
		} else {
			/* if local dev is not 0 then the first number we encounter
			   is 0 */

			if ((dev != 0) && (dev != localDev))
				return MV_ERROR;
		}
		if (func != 0)	/* i.e bridge */
			return MV_ERROR;
	}

	/* Creating PEX address to be passed */
	pexData = (bus << PXCAR_BUS_NUM_OFFS);
	pexData |= (dev << PXCAR_DEVICE_NUM_OFFS);
	pexData |= (func << PXCAR_FUNC_NUM_OFFS);
	pexData |= (regOff & PXCAR_REG_NUM_MASK);	/* lgacy register space */
	/* extended register space */
	pexData |= (((regOff & PXCAR_REAL_EXT_REG_NUM_MASK) >>
		     PXCAR_REAL_EXT_REG_NUM_OFFS) << PXCAR_EXT_REG_NUM_OFFS);

	pexData |= PXCAR_CONFIG_EN;

	/* Write the address to the PEX configuration address register */
	MV_REG_WRITE(PEX_CFG_ADDR_REG(pexIf), pexData);

	DB(mvOsPrintf("mvPexConfigRead:address pexData=%x ", pexData));

	/* In order to let the PEX controller absorbed the address of the read  */
	/* transaction we perform a validity check that the address was written */
	if (pexData != MV_REG_READ(PEX_CFG_ADDR_REG(pexIf)))
		return MV_ERROR;

	/* cleaning Master Abort */
	MV_REG_BIT_SET(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_STATUS_AND_COMMAND), PXSAC_MABORT);
#if 0
	/* Guideline (GL# PCI Express-1) Erroneous Read Data on Configuration   */
	/* This guideline is relevant for all devices except of the following devices:
	   88F5281-BO and above, 88F5181L-A0 and above, 88F1281 A0 and above
	   88F6183 A0 and above, 88F6183L  */
	ctrlModel = pexHalData[pexIf].ctrlModel;
	if (((dev != localDev) || (bus != localBus)) &&
			(!(MV_5281_DEV_ID == ctrlModel) &&
			 !((MV_5181_DEV_ID == ctrlModel) && (mvCtrlRevGet() >= MV_5181L_A0_REV)) &&
			 !(MV_1281_DEV_ID == ctrlModel) &&
			 !(MV_6183_DEV_ID == ctrlModel) &&
			 !(MV_6183L_DEV_ID == ctrlModel) &&
			 !(MV_6281_DEV_ID == ctrlModel) &&
			 !(MV_6282_DEV_ID == ctrlModel) &&
			 !(MV_6192_DEV_ID == ctrlModel) &&
			 !(MV_6190_DEV_ID == ctrlModel) &&
			 !(MV_6180_DEV_ID == ctrlModel) && !(MV_6280_DEV_ID == ctrlModel) && !(MV_78XX0_DEV_ID == ctrlModel)
			)) {

		/* PCI-Express configuration read work-around */

		/* we will use one of the Punit (AHBToMbus) windows to access the xbar
		   and read the data from there */
		/*
		   Need to configure the 2 free Punit (AHB to MBus bridge)
		   address decoding windows:
		   Configure the flash Window to handle Configuration space requests
		   for PEX0/1:
		   1.    write 0x7931/0x7941 to the flash window and the size,
		   79-xbar attr (pci cfg), 3/4-xbar target (pex0/1), 1-WinEn
		   2.    write base to flash window

		   Configuration transactions from the CPU should write/read the data
		   to/from address of the form:
		   addr[31:28] = 0x5 (for PEX0) or 0x6 (for PEX1)
		   addr[27:24] = extended register number
		   addr[23:16] = bus number
		   addr[15:11] = device number
		   addr[10:8]   = function number
		   addr[7:0]     = register number
		 */

#include "ctrlEnv/sys/mvAhbToMbus.h"
		{
			MV_U32 winNum;
			MV_AHB_TO_MBUS_DEC_WIN originWin;
			MV_U32 pciAddr = 0;
			MV_U32 remapLow = 0, remapHigh = 0;

			/*
			   We will use DEV_CS2\Flash window for this workarround
			 */

			winNum = mvAhbToMbusWinTargetGet(PEX_CONFIG_RW_WA_TARGET);

			/* save remap values if exist */
			if ((1 == winNum) || (0 == winNum)) {
				remapLow = MV_REG_READ(AHB_TO_MBUS_WIN_REMAP_LOW_REG(winNum));
				remapHigh = MV_REG_READ(AHB_TO_MBUS_WIN_REMAP_HIGH_REG(winNum));

			}

			/* save the original window values */
			mvAhbToMbusWinGet(winNum, &originWin);

			if (PEX_CONFIG_RW_WA_USE_ORIGINAL_WIN_VALUES) {
				/* set the window as xbar window */
				if (pexIf) {
					MV_REG_WRITE(AHB_TO_MBUS_WIN_CTRL_REG(winNum),
						     (0x7931 | (((originWin.addrWin.size >> 16) - 1)) << 16));
				} else {
					MV_REG_WRITE(AHB_TO_MBUS_WIN_CTRL_REG(winNum),
						     (0x7941 | (((originWin.addrWin.size >> 16) - 1)) << 16));
				}

				MV_REG_WRITE(AHB_TO_MBUS_WIN_BASE_REG(winNum), originWin.addrWin.baseLow);

				/*pciAddr = originWin.addrWin.baseLow; */
				pciAddr = (MV_U32) CPU_MEMIO_UNCACHED_ADDR((MV_U32) originWin.addrWin.baseLow);

			} else {
				/* set the window as xbar window */
				if (pexIf) {
					MV_REG_WRITE(AHB_TO_MBUS_WIN_CTRL_REG(winNum),
						     (0x7931 | (((PEX_CONFIG_RW_WA_SIZE >> 16) - 1)) << 16));
				} else {
					MV_REG_WRITE(AHB_TO_MBUS_WIN_CTRL_REG(winNum),
						     (0x7941 | (((PEX_CONFIG_RW_WA_SIZE >> 16) - 1)) << 16));
				}

				MV_REG_WRITE(AHB_TO_MBUS_WIN_BASE_REG(winNum), PEX_CONFIG_RW_WA_BASE);

				pciAddr = (MV_U32) CPU_MEMIO_UNCACHED_ADDR(PEX_CONFIG_RW_WA_BASE);
			}

			/* remap should be as base */
			if ((1 == winNum) || (0 == winNum)) {
				MV_REG_WRITE(AHB_TO_MBUS_WIN_REMAP_LOW_REG(winNum), pciAddr);
				MV_REG_WRITE(AHB_TO_MBUS_WIN_REMAP_HIGH_REG(winNum), 0);

			}

			/* extended register space */
			pciAddr |= (bus << 16);
			pciAddr |= (dev << 11);
			pciAddr |= (func << 8);
			pciAddr |= (regOff & PXCAR_REG_NUM_MASK);	/* lgacy register space */

			pexData = *(MV_U32 *) pciAddr;
			pexData = MV_32BIT_LE(pexData);	/* Data always in LE */

			/* restore the original window values */
			mvAhbToMbusWinSet(winNum, &originWin);

			/* restore original remap values */
			if ((1 == winNum) || (0 == winNum)) {
				MV_REG_WRITE(AHB_TO_MBUS_WIN_REMAP_LOW_REG(winNum), remapLow);
				MV_REG_WRITE(AHB_TO_MBUS_WIN_REMAP_HIGH_REG(winNum), remapHigh);

			}
		}
	} else
#endif
	{
		/* Read the Data returned in the PEX Data register */
		pexData = MV_REG_READ(PEX_CFG_DATA_REG(pexIf));

	}

	DB(mvOsPrintf("mvPexConfigRead: got : %x \n", pexData));

	return pexData;

}

/*******************************************************************************
* mvPexConfigWrite - Write to configuration space
*
* DESCRIPTION:
*       This function performs a 32 bit write to PEX configuration space.
*       It supports both type 0 and type 1 of Configuration Transactions
*       (local and over bridge). In order to write to local bus segment, use
*       bus number retrieved from mvPexLocalBusNumGet(). Other bus numbers
*       will result configuration transaction of type 1 (over bridge).
*
* INPUT:
*       pexIf   - PEX interface number.
*       bus     - PEX segment bus number.
*       dev     - PEX device number.
*       func    - Function number.
*       regOffs - Register offset.
*       data    - 32bit data.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexConfigWrite(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func, MV_U32 regOff, MV_U32 data)
{
#if defined(PCIE_VIRTUAL_BRIDGE_SUPPORT)
	return mvPexVrtBrgConfigWrite(pexIf, bus, dev, func, regOff, data);
}

MV_STATUS mvPexHwConfigWrite(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func, MV_U32 regOff, MV_U32 data)
{
#endif
	MV_U32 pexData = 0;
	MV_U32 localDev, localBus;

	if (pexIf >= MV_PEX_MAX_IF)
		return MV_BAD_PARAM;

	/* Parameter checking   */
	if (PEX_DEFAULT_IF != pexIf) {
		if (pexIf >= pexHalData[pexIf].maxPexIf) {
			mvOsPrintf("mvPexConfigWrite: ERR. Invalid PEX interface %d\n", pexIf);
			return MV_ERROR;
		}
	}

	if (dev >= MAX_PEX_DEVICES) {
		mvOsPrintf("mvPexConfigWrite: ERR. device number illigal %d\n", dev);
		return MV_BAD_PARAM;
	}

	if (func >= MAX_PEX_FUNCS) {
		mvOsPrintf("mvPexConfigWrite: ERR. function number illigal %d\n", func);
		return MV_ERROR;
	}

	if (bus >= MAX_PEX_BUSSES) {
		mvOsPrintf("mvPexConfigWrite: ERR. bus number illigal %d\n", bus);
		return MV_ERROR;
	}

	localDev = mvPexLocalDevNumGet(pexIf);
	localBus = mvPexLocalBusNumGet(pexIf);

	/* in PCI Express we have only one device number other than ourselves */
	/* and this number is the first number we encounter
	   else than the localDev that can be any valid dev number */
	/* pex spec define return on config read/write on any device */
	if (bus == localBus) {
		if (localDev == 0) {
			/* if local dev is 0 then the first number we encounter
			   after 0 is 1 */
			if ((dev != 1) && (dev != localDev))
				return MV_ERROR;
		} else {
			/* if local dev is not 0 then the first number we encounter
			   is 0 */

			if ((dev != 0) && (dev != localDev))
				return MV_ERROR;
		}

	}

	/* if we are not accessing ourselves , then check the link */
	if ((dev != localDev) || (bus != localBus)) {
		/* workarround */
		/* when no link return MV_ERROR */

		pexData = MV_REG_READ(PEX_STATUS_REG(pexIf));

		if ((pexData & PXSR_DL_DOWN))
			return MV_ERROR;
	}

	pexData = 0;

	/* Creating PEX address to be passed */
	pexData |= (bus << PXCAR_BUS_NUM_OFFS);
	pexData |= (dev << PXCAR_DEVICE_NUM_OFFS);
	pexData |= (func << PXCAR_FUNC_NUM_OFFS);
	pexData |= (regOff & PXCAR_REG_NUM_MASK);	/* lgacy register space */
	/* extended register space */
	pexData |= (((regOff & PXCAR_REAL_EXT_REG_NUM_MASK) >>
		     PXCAR_REAL_EXT_REG_NUM_OFFS) << PXCAR_EXT_REG_NUM_OFFS);
	pexData |= PXCAR_CONFIG_EN;

	DB(mvOsPrintf("mvPexConfigWrite: If=%x bus=%x func=%x dev=%x regOff=%x data=%x \n",
		      pexIf, bus, func, dev, regOff, data, pexData));

	/* Write the address to the PEX configuration address register */
	MV_REG_WRITE(PEX_CFG_ADDR_REG(pexIf), pexData);

	/* Clear CPU pipe. Important where CPU can perform OOO execution */
	CPU_PIPE_FLUSH;

	/* In order to let the PEX controller absorbed the address of the read  */
	/* transaction we perform a validity check that the address was written */
	if (pexData != MV_REG_READ(PEX_CFG_ADDR_REG(pexIf)))
		return MV_ERROR;

	/* Write the Data passed to the PEX Data register */
	MV_REG_WRITE(PEX_CFG_DATA_REG(pexIf), data);

	return MV_OK;

}

/*******************************************************************************
* mvPexMasterEnable - Enable/disale PEX interface master transactions.
*
* DESCRIPTION:
*       This function performs read modified write to PEX command status
*       (offset 0x4) to set/reset bit 2. After this bit is set, the PEX
*       master is allowed to gain ownership on the bus, otherwise it is
*       incapable to do so.
*
* INPUT:
*       pexIf  - PEX interface number.
*       enable - Enable/disable parameter.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexMasterEnable(MV_U32 pexIf, MV_BOOL enable)
{
	MV_U32 pexCommandStatus;
	MV_U32 localBus;
	MV_U32 localDev;

	/* Parameter checking   */
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexMasterEnable: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_ERROR;
	}

	localBus = mvPexLocalBusNumGet(pexIf);
	localDev = mvPexLocalDevNumGet(pexIf);

	pexCommandStatus = MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_STATUS_AND_COMMAND));

	if (MV_TRUE == enable)
		pexCommandStatus |= PXSAC_MASTER_EN;
	else
		pexCommandStatus &= ~PXSAC_MASTER_EN;

	MV_REG_WRITE(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_STATUS_AND_COMMAND), pexCommandStatus);

	return MV_OK;
}

/*******************************************************************************
* mvPexSlaveEnable - Enable/disale PEX interface slave transactions.
*
* DESCRIPTION:
*       This function performs read modified write to PEX command status
*       (offset 0x4) to set/reset bit 0 and 1. After those bits are set,
*       the PEX slave is allowed to respond to PEX IO space access (bit 0)
*       and PEX memory space access (bit 1).
*
* INPUT:
*       pexIf  - PEX interface number.
*       dev     - PEX device number.
*       enable - Enable/disable parameter.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexSlaveEnable(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_BOOL enable)
{
	MV_U32 pexCommandStatus;
	MV_U32 RegOffs;

	/* Parameter checking   */
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexSlaveEnable: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_BAD_PARAM;
	}
	if (dev >= MAX_PEX_DEVICES) {
		mvOsPrintf("mvPexLocalDevNumSet: ERR. device number illigal %d\n", dev);
		return MV_BAD_PARAM;

	}

	RegOffs = PEX_STATUS_AND_COMMAND;

	pexCommandStatus = mvPexConfigRead(pexIf, bus, dev, 0, RegOffs);

	if (MV_TRUE == enable)
		pexCommandStatus |= (PXSAC_IO_EN | PXSAC_MEM_EN);
	else
		pexCommandStatus &= ~(PXSAC_IO_EN | PXSAC_MEM_EN);

	mvPexConfigWrite(pexIf, bus, dev, 0, RegOffs, pexCommandStatus);

	return MV_OK;

}

/*******************************************************************************
* mvPexLocalBusNumSet - Set PEX interface local bus number.
*
* DESCRIPTION:
*       This function sets given PEX interface its local bus number.
*       Note: In case the PEX interface is PEX-X, the information is read-only.
*
* INPUT:
*       pexIf  - PEX interface number.
*       busNum - Bus number.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_NOT_ALLOWED in case PEX interface is PEX-X.
*		MV_BAD_PARAM on bad parameters ,
*       otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexLocalBusNumSet(MV_U32 pexIf, MV_U32 busNum)
{
	MV_U32 pexStatus;
	MV_U32 localBus;
	MV_U32 localDev;

	/* Parameter checking   */
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexLocalBusNumSet: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_BAD_PARAM;
	}
	if (busNum >= MAX_PEX_BUSSES) {
		mvOsPrintf("mvPexLocalBusNumSet: ERR. bus number illigal %d\n", busNum);
		return MV_ERROR;
	}

	localBus = mvPexLocalBusNumGet(pexIf);
	localDev = mvPexLocalDevNumGet(pexIf);

	pexStatus = MV_REG_READ(PEX_STATUS_REG(pexIf));

	pexStatus &= ~PXSR_PEX_BUS_NUM_MASK;

	pexStatus |= (busNum << PXSR_PEX_BUS_NUM_OFFS) & PXSR_PEX_BUS_NUM_MASK;

	MV_REG_WRITE(PEX_STATUS_REG(pexIf), pexStatus);

	return MV_OK;
}

/*******************************************************************************
* mvPexLocalBusNumGet - Get PEX interface local bus number.
*
* DESCRIPTION:
*       This function gets the local bus number of a given PEX interface.
*
* INPUT:
*       pexIf  - PEX interface number.
*
* OUTPUT:
*       None.
*
* RETURN:
*       Local bus number.0xffffffff on Error
*
*******************************************************************************/
MV_U32 mvPexLocalBusNumGet(MV_U32 pexIf)
{
	MV_U32 pexStatus;

	if (pexIf >= MV_PEX_MAX_IF)
		return 0xFFFFFFFF;

	/* Parameter checking   */
	if (PEX_DEFAULT_IF != pexIf) {
		if (pexIf >= pexHalData[pexIf].maxPexIf) {
			mvOsPrintf("mvPexLocalBusNumGet: ERR. Invalid PEX interface %d\n", pexIf);
			return 0xFFFFFFFF;
		}
	}

	pexStatus = MV_REG_READ(PEX_STATUS_REG(pexIf));

	pexStatus &= PXSR_PEX_BUS_NUM_MASK;

	return (pexStatus >> PXSR_PEX_BUS_NUM_OFFS);
}

/*******************************************************************************
* mvPexLocalDevNumSet - Set PEX interface local device number.
*
* DESCRIPTION:
*       This function sets given PEX interface its local device number.
*       Note: In case the PEX interface is PEX-X, the information is read-only.
*
* INPUT:
*       pexIf  - PEX interface number.
*       devNum - Device number.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_NOT_ALLOWED in case PEX interface is PEX-X.
*		MV_BAD_PARAM on bad parameters ,
*       otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexLocalDevNumSet(MV_U32 pexIf, MV_U32 devNum)
{
	MV_U32 pexStatus;
	MV_U32 localBus;
	MV_U32 localDev;

	if (pexIf >= MV_PEX_MAX_IF)
		return MV_BAD_PARAM;

	/* Parameter checking   */
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexLocalDevNumSet: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_BAD_PARAM;
	}
	if (devNum >= MAX_PEX_DEVICES) {
		mvOsPrintf("mvPexLocalDevNumSet: ERR. device number illigal %d\n", devNum);
		return MV_BAD_PARAM;
	}

	localBus = mvPexLocalBusNumGet(pexIf);
	localDev = mvPexLocalDevNumGet(pexIf);

	pexStatus = MV_REG_READ(PEX_STATUS_REG(pexIf));

	pexStatus &= ~PXSR_PEX_DEV_NUM_MASK;

	pexStatus |= (devNum << PXSR_PEX_DEV_NUM_OFFS) & PXSR_PEX_DEV_NUM_MASK;

	MV_REG_WRITE(PEX_STATUS_REG(pexIf), pexStatus);

	return MV_OK;
}

/*******************************************************************************
* mvPexLocalDevNumGet - Get PEX interface local device number.
*
* DESCRIPTION:
*       This function gets the local device number of a given PEX interface.
*
* INPUT:
*       pexIf  - PEX interface number.
*
* OUTPUT:
*       None.
*
* RETURN:
*       Local device number. 0xffffffff on Error
*
*******************************************************************************/
MV_U32 mvPexLocalDevNumGet(MV_U32 pexIf)
{
	MV_U32 pexStatus;

	/* Parameter checking   */

	if (PEX_DEFAULT_IF != pexIf) {
		if (pexIf >= pexHalData[pexIf].maxPexIf) {
			mvOsPrintf("mvPexLocalDevNumGet: ERR. Invalid PEX interface %d\n", pexIf);
			return 0xFFFFFFFF;
		}
	}

	pexStatus = MV_REG_READ(PEX_STATUS_REG(pexIf));

	pexStatus &= PXSR_PEX_DEV_NUM_MASK;

	return (pexStatus >> PXSR_PEX_DEV_NUM_OFFS);
}

MV_VOID mvPexPhyRegRead(MV_U32 pexIf, MV_U32 regOffset, MV_U16 *value)
{

	MV_U32 regAddr;
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexPhyRegRead: ERR. Invalid PEX interface %d\n", pexIf);
		return;
	}
	regAddr = (BIT31 | ((regOffset & 0x3fff) << 16));
	MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), regAddr);
	*value = MV_REG_READ(PEX_PHY_ACCESS_REG(pexIf));
}

MV_VOID mvPexPhyRegWrite(MV_U32 pexIf, MV_U32 regOffset, MV_U16 value)
{

	MV_U32 regAddr;
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexPhyRegWrite: ERR. Invalid PEX interface %d\n", pexIf);
		return;
	}
	regAddr = (((regOffset & 0x3fff) << 16) | value);
	MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), regAddr);
}

/*******************************************************************************
* mvPexActiveStateLinkPMEnable
*
* DESCRIPTION:
*	Enable Active Link State Power Management
*
* INPUT:
*	pexIf		- PEX interface number.
*	enable		- MV_TRUE to enable ASPM, MV_FALSE to disable.
*
* OUTPUT:
*	None
*
* RETURN:
*	MV_OK on success , MV_ERROR otherwise
*
*******************************************************************************/
MV_STATUS mvPexActiveStateLinkPMEnable(MV_U32 pexIf, MV_BOOL enable)
{
	MV_U32 reg;

	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexActiveStateLinkPMEnable: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_ERROR;
	}

	reg = MV_REG_READ(PEX_PWR_MNG_EXT_REG(pexIf)) & ~PXPMER_L1_ASPM_EN_MASK;
	if (enable == MV_TRUE)
		reg |= PXPMER_L1_ASPM_EN_MASK;
	MV_REG_WRITE(PEX_PWR_MNG_EXT_REG(pexIf), reg);

	/* Enable / Disable L0/1 entry */
	reg = MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_LINK_CTRL_STAT_REG))
	      & ~PXLCSR_ASPM_CNT_MASK;
	if (enable == MV_TRUE)
		reg |= PXLCSR_ASPM_CNT_L0S_L1S_ENT_SUPP;
	MV_REG_WRITE(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_LINK_CTRL_STAT_REG), reg);

	return MV_OK;
}

/*******************************************************************************
* mvPexForceX1
*
* DESCRIPTION:
*	shut down lanes 1-3 if recognize that attached to an x1 end-point
* INPUT:
*	pexIf		- PEX interface number.
*
* OUTPUT:
*	None
*
* RETURN:
*	MV_OK on success , MV_ERROR otherwise
*
*******************************************************************************/
MV_U32 mvPexForceX1(MV_U32 pexIf)
{
	MV_U32 regData = 0;
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexForceX1: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_BAD_PARAM;
	}

	regData = MV_REG_READ(PEX_CTRL_REG(pexIf)) & ~(PXCR_CONF_LINK_MASK);
	regData |= PXCR_CONF_LINK_X1;

	MV_REG_WRITE(PEX_CTRL_REG(pexIf), regData);
	return MV_OK;
}

/*******************************************************************************
* mvPexIfEnable
*
* DESCRIPTION:
*	This function Enables PCI Express interface.
*
* INPUT:
*	pexIf		-  PEX interface number.
*	pexType		-  MV_PEX_ROOT_COMPLEX - root complex device
*			   MV_PEX_END_POINT - end point device
* OUTPUT:
*	None.
*
* RETURN:
*	None.
*
*******************************************************************************/
MV_VOID mvPexIfEnable(MV_U32 pexIf, MV_PEX_TYPE pexType)
{
	/* Set pex mode incase S@R not exist */
	if (pexType == MV_PEX_END_POINT) {
		MV_REG_BIT_RESET(PEX_CTRL_REG(pexIf), PXCR_DEV_TYPE_CTRL_MASK);
		/* Change pex mode in capability reg */
		MV_REG_BIT_RESET(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_CAPABILITY_REG), BIT22);
		MV_REG_BIT_SET(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_CAPABILITY_REG), BIT20);
	} else {
		MV_REG_BIT_SET(PEX_CTRL_REG(pexIf), PXCR_DEV_TYPE_CTRL_MASK);
	}
	return;
}

MV_VOID mvPexPhyPowerDown(MV_U32 pexIf)
{
	MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), 0x20800087);
	return;
}

#if 0
/*  These APIs will be removed, OS glue should call the mvCtrlPwerClkxxx() */
/*  functions directly. */
MV_BOOL mvPexIsPowerUp(MV_U32 pexIf)
{
	if (pexIf >= pexHalData[pexIf].maxPexIf) {
		mvOsPrintf("mvPexIsPowerUp: ERR. Invalid PEX interface %d\n", pexIf);
		return MV_FALSE;
	}
	return mvCtrlPwrClckGet(PEX_UNIT_ID, pexIf);
}

MV_VOID mvPexPowerDown(MV_U32 pexIf)
{
	MV_U32 ctrlModel = pexHalData[pexIf].ctrlModel;

	if ((ctrlModel == MV_78XX0_DEV_ID) ||
			(ctrlModel == MV_76100_DEV_ID) || (ctrlModel == MV_78100_DEV_ID) || (ctrlModel == MV_78200_DEV_ID)) {
		mvCtrlPwrClckSet(PEX_UNIT_ID, pexIf, MV_FALSE);
	} else {
		MV_REG_WRITE((0x41B00 - (pexIf) * 0x10000), 0x20800087);
	}
}
#endif