/*******************************************************************************
* 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;
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;
}
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;
}
/*******************************************************************************
* 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;
/* 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;
}
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;
}
/*******************************************************************************
* 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;
/* Parameter checking */
if (PEX_DEFAULT_IF != pexIf)
{
if (pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexModeGet: ERR. Invalid PEX interface %d\n",pexIf);
return MV_ERROR;
}
}
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;
}
/*******************************************************************************
* 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;
#if 0 /* maen - disabled because there is a conflict with SysPexInit
sysPexInit need pexMode, however pexHalData[pexIf].maxPexIf is needed in mvPexModeGe */
*/
/* Parameter checking */
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;
}
/*******************************************************************************
* 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_STATUS mvPexHalInit(MV_U32 pexIf, MV_PEX_TYPE pexType)
{
MV_PEX_MODE pexMode;
MV_U32 regVal;
MV_U32 status;
/* 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 */
if ((mvCtrlModelGet() != MV_1281_DEV_ID) &&
(mvCtrlModelGet() != MV_6281_DEV_ID) &&
(mvCtrlModelGet() != MV_6192_DEV_ID) &&
(mvCtrlModelGet() != MV_6190_DEV_ID) &&
(mvCtrlModelGet() != MV_6180_DEV_ID) &&
(mvCtrlModelGet() != MV_6183_DEV_ID) &&
(mvCtrlModelGet() != MV_6183L_DEV_ID) &&
(mvCtrlModelGet() != MV_78100_DEV_ID) &&
(mvCtrlModelGet() != MV_78200_DEV_ID) &&
(mvCtrlModelGet() != MV_76100_DEV_ID) &&
(mvCtrlModelGet() != MV_78XX0_DEV_ID))
{
/* Read current value of TXAMP */
MV_REG_WRITE(0x41b00, 0x80820000); /* Write the read command */
regVal = MV_REG_READ(0x41b00); /* 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(0x41b00, 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 (mvCtrlModelGet() == MV_1281_DEV_ID)
{
MV_REG_WRITE(0x41b00, 0x80860000); /* Write the read command */
regVal = MV_REG_READ(0x41b00); /* Extract the data */
regVal |= (BIT0 | BIT3);
regVal &= ~0x80000000; /* Set "write" command */
MV_REG_WRITE(0x41b00, 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( 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 */
mvPexPowerDown(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);
}
/* now wait 500 ms to be sure the link is valid (spec compliant) */
mvOsDelay(500);
/* 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;
}
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;
/* Parameter checking */
if (PEX_DEFAULT_IF != pexIf)
{
if (pexIf >= mvCtrlPexMaxIfGet())
{
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 */
if ( ( (dev != localDev) || (bus != localBus) ) &&
(
!(MV_5281_DEV_ID == mvCtrlModelGet())&&
!((MV_5181_DEV_ID == mvCtrlModelGet())&& (mvCtrlRevGet() >= MV_5181L_A0_REV))&&
!(MV_1281_DEV_ID == mvCtrlModelGet())&&
!(MV_6183_DEV_ID == mvCtrlModelGet())&&
!(MV_6183L_DEV_ID == mvCtrlModelGet())&&
!(MV_6281_DEV_ID == mvCtrlModelGet())&&
!(MV_6192_DEV_ID == mvCtrlModelGet())&&
!(MV_6190_DEV_ID == mvCtrlModelGet())&&
!(MV_6180_DEV_ID == mvCtrlModelGet())&&
!(MV_78XX0_DEV_ID == mvCtrlModelGet())
))
{
/* 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);
}
/*******************************************************************************
* 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)
{
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;
}
/*******************************************************************************
* 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)
{
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 0xFFFFFFFF;
}
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 0xFFFFFFFF;
}
/* 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 0xFFFFFFFF;
} else {
/* if local dev is not 0 then the first number we encounter
is 0 */
if ((dev != 0) && (dev != localDev))
return 0xFFFFFFFF;
}
}
/* 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);
/* 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;
}
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) &&
(ctrlModel != MV_6710_DEV_ID) &&
(ctrlModel != MV_78130_DEV_ID) &&
(ctrlModel != MV_78160_DEV_ID) &&
(ctrlModel != MV_78230_DEV_ID) &&
(ctrlModel != MV_78260_DEV_ID) &&
(ctrlModel != MV_78460_DEV_ID) &&
(ctrlModel != MV_78000_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)) {
regVal = MV_REG_READ(0x100e4); /* This register currently doesn't appear in the FS */
regVal |= 0x3 << 25;
MV_REG_WRITE(0x100e4, regVal);
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);
if (ctrlModel == MV_6710_DEV_ID) {
/* PEX capability */
regVal = MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf, PEX_LINK_CAPABILITY_REG)) & 0xF;
if (regVal == 0x2) {
/* KW40 set to Gen 2.0 - conf_auto_speed_change */
/* when bit is set, link will issue link speed change to the max link speed possible */
regVal = MV_REG_READ(PEX_CTRL_REG(pexIf)) | (1<<10);
MV_REG_WRITE(PEX_CTRL_REG(pexIf), regVal);
}
}
} else {
/* TODO: 14/12/10 - requested by CV to support EP Compliance */
MV_REG_WRITE(PEX_DBG_CTRL_REG(pexIf), 0x0F62F0C0);
MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), (0x80C2 << 16));
regVal = MV_REG_READ(PEX_PHY_ACCESS_REG(pexIf)) & 0xFFFF;
MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), (0xC2 << 16) | regVal | (1 << 2));
MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), (0x8080 << 16));
regVal = MV_REG_READ(PEX_PHY_ACCESS_REG(pexIf)) & 0xFFFF;
MV_REG_WRITE(PEX_PHY_ACCESS_REG(pexIf), (0x80 << 16) | regVal | (0x2 << 1));
}
mvSysPexCpuIfEnable(pexIf);
/* now wait 1ms to be sure the link is valid */
mvOsDelay(100);
/* 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 0
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);
#endif
#ifdef PCIE_VIRTUAL_BRIDGE_SUPPORT
mvPexVrtBrgInit(pexIf);
#endif
return MV_OK;
}