/*******************************************************************************
* mvCpuIfPexRemap - Set CPU remap register for address windows.
*
* DESCRIPTION:
*
* INPUT:
* pexTarget - Peripheral target enumerator. Must be a PEX target.
* pAddrDecWin - CPU target window information data structure.
* Note that caller has to fill in the base field only. The
* size field is ignored.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_ERROR if target is not a PEX one, MV_OK otherwise.
*
*******************************************************************************/
MV_U32 mvCpuIfPexRemap(MV_TARGET pexTarget, MV_ADDR_WIN *pAddrDecWin)
{
MV_U32 winNum;
/* Check parameters */
if (mvCtrlPexMaxIfGet() > 1)
{
if ((!MV_TARGET_IS_PEX1(pexTarget))&&(!MV_TARGET_IS_PEX0(pexTarget)))
{
mvOsPrintf("mvCpuIfPexRemap: target %d is illegal\n",pexTarget);
return 0xffffffff;
}
}
else
{
if (!MV_TARGET_IS_PEX0(pexTarget))
{
mvOsPrintf("mvCpuIfPexRemap: target %d is illegal\n",pexTarget);
return 0xffffffff;
}
}
/* get the Window number associated with this target */
winNum = mvAhbToMbusWinTargetGet(pexTarget);
if (winNum >= MAX_AHB_TO_MBUS_WINS)
{
mvOsPrintf("mvCpuIfPexRemap: mvAhbToMbusWinTargetGet Failed\n");
return 0xffffffff;
}
return mvAhbToMbusWinRemap(winNum , pAddrDecWin);
}
MV_STATUS mvPexTargetWinRemapEnable(MV_U32 pexIf, MV_U32 winNum,
MV_BOOL enable)
{
PEX_WIN_REG_INFO winRegInfo;
/* Parameter checking */
if (pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexTargetWinRemap: ERR. Invalid PEX interface num %d\n",
pexIf);
return MV_BAD_PARAM;
}
if (MV_PEX_WIN_DEFAULT == winNum)
{
mvOsPrintf("mvPexTargetWinRemap: ERR. Invalid PEX win num %d\n",
winNum);
return MV_BAD_PARAM;
}
pexWinRegInfoGet(pexIf, winNum, &winRegInfo);
if (enable == MV_TRUE)
{
MV_REG_BIT_SET(winRegInfo.remapLowRegOffs,PXWRR_REMAP_EN);
}
else
{
MV_REG_BIT_RESET(winRegInfo.remapLowRegOffs,PXWRR_REMAP_EN);
}
return MV_OK;
}
MV_STATUS mvPexBarGet(MV_U32 pexIf,
MV_U32 barNum,
MV_PEX_BAR *pAddrWin)
{
/* check parameters */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexBarGet: ERR. Invalid PEX interface %d\n", pexIf);
return MV_BAD_PARAM;
}
if(barNum >= PEX_MAX_BARS)
{
mvOsPrintf("mvPexBarGet: ERR. Invalid bar number %d\n", barNum);
return MV_BAD_PARAM;
}
/* read base low */
pAddrWin->addrWin.baseLow =
MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf,PEX_MV_BAR_BASE(barNum)));
if (PEX_INTER_REGS_BAR == barNum)
{
pAddrWin->addrWin.baseLow &= PXBIR_BASE_MASK;
}
else
{
pAddrWin->addrWin.baseLow &= PXBR_BASE_MASK;
}
/* read base high */
pAddrWin->addrWin.baseHigh =
MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf,PEX_MV_BAR_BASE_HIGH(barNum)));
/* Read bar size */
if (PEX_INTER_REGS_BAR != barNum) /* internal registers have no size */
{
pAddrWin->addrWin.size = MV_REG_READ(PEX_BAR_CTRL_REG(pexIf,barNum));
/* check if enable or not */
if (pAddrWin->addrWin.size & PXBCR_BAR_EN)
{
pAddrWin->enable = MV_TRUE;
}
else
{
pAddrWin->enable = MV_FALSE;
}
/* now get the size */
pAddrWin->addrWin.size &= PXBCR_BAR_SIZE_MASK;
pAddrWin->addrWin.size >>= PXBCR_BAR_SIZE_OFFS;
pAddrWin->addrWin.size = ctrlRegToSize(pAddrWin->addrWin.size,
PXBCR_BAR_SIZE_ALIGNMENT);
}
/*******************************************************************************
* mvPexTargetWinRemap - Set PEX to target address window remap.
*
* DESCRIPTION:
* The PEX interface supports remap of the BAR original address window.
* For each BAR it is possible to define a remap address. For example
* an address 0x12345678 that hits BAR 0x10 (SDRAM CS[0]) will be modified
* according to remap register but will also be targeted to the
* SDRAM CS[0].
*
* INPUT:
* pexIf - PEX interface number.
* bar - Peripheral target enumerator accessed by slave.
* pAddrWin - Address window to be checked.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexTargetWinRemap(MV_U32 pexIf, MV_U32 winNum,
MV_PEX_REMAP_WIN *pAddrWin)
{
PEX_WIN_REG_INFO winRegInfo;
/* Parameter checking */
if (pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexTargetWinRemap: ERR. Invalid PEX interface num %d\n",
pexIf);
return MV_BAD_PARAM;
}
if (MV_PEX_WIN_DEFAULT == winNum)
{
mvOsPrintf("mvPexTargetWinRemap: ERR. Invalid PEX win num %d\n",
winNum);
return MV_BAD_PARAM;
}
if (MV_IS_NOT_ALIGN(pAddrWin->addrWin.baseLow, PXWRR_REMAP_ALIGNMENT))
{
mvOsPrintf("mvPexTargetWinRemap: Error remap PEX interface %d win %d."\
"\nAddress 0x%08x is unaligned to size 0x%x.\n",
pexIf,
winNum,
pAddrWin->addrWin.baseLow,
pAddrWin->addrWin.size);
return MV_ERROR;
}
pexWinRegInfoGet(pexIf, winNum, &winRegInfo);
/* Set remap low register value */
MV_REG_WRITE(winRegInfo.remapLowRegOffs, pAddrWin->addrWin.baseLow);
/* Skip base high settings if the BAR has only base low (32-bit) */
if (0 != winRegInfo.remapHighRegOffs)
{
MV_REG_WRITE(winRegInfo.remapHighRegOffs, pAddrWin->addrWin.baseHigh);
}
if (pAddrWin->enable == MV_TRUE)
{
MV_REG_BIT_SET(winRegInfo.remapLowRegOffs,PXWRR_REMAP_EN);
}
else
{
MV_REG_BIT_RESET(winRegInfo.remapLowRegOffs,PXWRR_REMAP_EN);
}
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;
}
/*******************************************************************************
* mvSysPexInit - Initialize the Pex subsystem
*
* DESCRIPTION:
*
* INPUT:
* None
* OUTPUT:
* None
* RETURN:
* None
*
*******************************************************************************/
MV_STATUS mvSysPexInit(MV_U32 pexIf, MV_PEX_TYPE pexType)
{
MV_PEX_HAL_DATA halData;
MV_UNIT_WIN_INFO addrWinMap[MAX_TARGETS + 1];
MV_STATUS status;
status = mvCtrlAddrWinMapBuild(addrWinMap, MAX_TARGETS + 1);
if(status == MV_OK)
status = mvPexWinInit(pexIf, pexType, addrWinMap);
if(status == MV_OK) {
halData.ctrlModel = mvCtrlModelGet();
halData.maxPexIf = mvCtrlPexMaxIfGet();
status = mvPexInit(pexIf, pexType, &halData);
}
return status;
}
/*******************************************************************************
* mvSysPexInit - Initialize the Pex subsystem
*
* DESCRIPTION:
*
* INPUT:
* None
* OUTPUT:
* None
* RETURN:
* None
*
*******************************************************************************/
MV_STATUS mvSysPexInit(MV_U32 pexIf, MV_PEX_TYPE pexType)
{
MV_PEX_HAL_DATA halData;
MV_UNIT_WIN_INFO addrWinMap[MAX_TARGETS + 1];
MV_STATUS status;
if (MV_FALSE == mvCtrlPwrClckGet(PEX_UNIT_ID, pexIf))
return MV_ERROR;
status = mvCtrlAddrWinMapBuild(addrWinMap, MAX_TARGETS + 1);
if (status == MV_OK)
status = mvPexWinInit(pexIf, pexType, addrWinMap);
if (status == MV_OK) {
halData.ctrlModel = mvCtrlModelGet();
halData.maxPexIf = mvCtrlPexMaxIfGet();
halData.ctrlFamily=mvCtrlDevFamilyIdGet(halData.ctrlModel);
status = mvPexInit(pexIf, pexType, &halData);
}
return status;
}
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);
}
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;
}
/*******************************************************************************
* mvPexTargetWinEnable - Enable/disable a PEX BAR window
*
* DESCRIPTION:
* This function enable/disable a PEX BAR window.
* if parameter 'enable' == MV_TRUE the routine will enable the
* window, thus enabling PEX accesses for that BAR (before enabling the
* window it is tested for overlapping). Otherwise, the window will
* be disabled.
*
* INPUT:
* pexIf - PEX interface number.
* bar - BAR to be accessed by slave.
* enable - Enable/disable parameter.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexTargetWinEnable(MV_U32 pexIf,MV_U32 winNum, MV_BOOL enable)
{
PEX_WIN_REG_INFO winRegInfo;
MV_PEX_DEC_WIN addrDecWin;
/* Parameter checking */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexTargetWinEnable: ERR. Invalid PEX If %d\n", pexIf);
return MV_BAD_PARAM;
}
if (winNum >= PEX_MAX_TARGET_WIN)
{
mvOsPrintf("mvPexTargetWinEnable ERR. Invalid PEX winNum %d\n", winNum);
return MV_BAD_PARAM;
}
/* get the pex Window registers offsets */
pexWinRegInfoGet(pexIf,winNum,&winRegInfo);
/* if the address windows is disabled , we only disable the appropriare
pex window and ignore other settings */
if (MV_FALSE == enable)
{
/* this is not relevant to default and expantion rom
windows */
if (winRegInfo.sizeRegOffs)
{
if ((MV_PEX_WIN_DEFAULT != winNum)&&
(MV_PEX_WIN_EXP_ROM != winNum))
{
MV_REG_BIT_RESET(winRegInfo.sizeRegOffs, PXWCR_WIN_EN);
}
}
}
else
{
if (MV_OK != mvPexTargetWinGet(pexIf,winNum, &addrDecWin))
{
mvOsPrintf("mvPexTargetWinEnable: mvPexTargetWinGet Failed\n");
return MV_ERROR;
}
/* Check if the requested window overlaps with current windows */
if (MV_TRUE == pexWinOverlapDetect(pexIf,winNum, &addrDecWin.addrWin))
{
mvOsPrintf("mvPexTargetWinEnable: ERR. Target %d overlap\n", winNum);
return MV_BAD_PARAM;
}
if (MV_FALSE == pexIsWinWithinBar(pexIf,&addrDecWin.addrWin))
{
mvOsPrintf("mvPexTargetWinEnable: Win %d should be in bar boundries\n",
winNum);
return MV_BAD_PARAM;
}
/* this is not relevant to default and expantion rom
windows */
if (winRegInfo.sizeRegOffs)
{
if ((MV_PEX_WIN_DEFAULT != winNum)&&
(MV_PEX_WIN_EXP_ROM != winNum))
{
MV_REG_BIT_SET(winRegInfo.sizeRegOffs, PXWCR_WIN_EN);
}
}
}
return MV_OK;
}
/*******************************************************************************
* mvPexTargetWinGet - Get PEX to peripheral target address window
*
* DESCRIPTION:
* Get the PEX to peripheral target address window BAR.
*
* INPUT:
* pexIf - PEX interface number.
* bar - BAR to be accessed by slave.
*
* OUTPUT:
* pAddrBarWin - PEX target window information data structure.
*
* RETURN:
* MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexTargetWinGet(MV_U32 pexIf, MV_U32 winNum,
MV_PEX_DEC_WIN *pAddrDecWin)
{
MV_TARGET_ATTRIB targetAttrib;
MV_DEC_REGS decRegs;
PEX_WIN_REG_INFO winRegInfo;
/* Parameter checking */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexTargetWinGet: ERR. Invalid PEX interface %d\n", pexIf);
return MV_BAD_PARAM;
}
if (winNum >= PEX_MAX_TARGET_WIN)
{
mvOsPrintf("mvPexTargetWinGet: ERR. Invalid PEX winNum %d\n", winNum);
return MV_BAD_PARAM;
}
/* get the pex Window registers offsets */
pexWinRegInfoGet(pexIf,winNum,&winRegInfo);
/* read base register*/
if (winRegInfo.baseLowRegOffs)
{
decRegs.baseReg = MV_REG_READ(winRegInfo.baseLowRegOffs);
}
else
{
decRegs.baseReg = 0;
}
/* read size reg */
if (winRegInfo.sizeRegOffs)
{
decRegs.sizeReg = MV_REG_READ(winRegInfo.sizeRegOffs);
}
else
{
decRegs.sizeReg =0;
}
if (MV_OK != mvCtrlRegToAddrDec(&decRegs,&(pAddrDecWin->addrWin)))
{
mvOsPrintf("mvPexTargetWinGet: mvCtrlRegToAddrDec Failed \n");
return MV_ERROR;
}
if (decRegs.sizeReg & PXWCR_WIN_EN)
{
pAddrDecWin->enable = MV_TRUE;
}
else
{
pAddrDecWin->enable = MV_FALSE;
}
#if 0
if (-1 == pAddrDecWin->addrWin.size)
{
return MV_ERROR;
}
#endif
/* get target bar */
if ((decRegs.sizeReg & PXWCR_WIN_BAR_MAP_MASK) == PXWCR_WIN_BAR_MAP_BAR1 )
{
pAddrDecWin->targetBar = 1;
}
else if ((decRegs.sizeReg & PXWCR_WIN_BAR_MAP_MASK) ==
PXWCR_WIN_BAR_MAP_BAR2 )
{
pAddrDecWin->targetBar = 2;
}
/* attrib and targetId */
pAddrDecWin->attrib = (decRegs.sizeReg & PXWCR_ATTRIB_MASK) >>
PXWCR_ATTRIB_OFFS;
pAddrDecWin->targetId = (decRegs.sizeReg & PXWCR_TARGET_MASK) >>
PXWCR_TARGET_OFFS;
targetAttrib.attrib = pAddrDecWin->attrib;
targetAttrib.targetId = pAddrDecWin->targetId;
pAddrDecWin->target = mvCtrlTargetGet(&targetAttrib);
return MV_OK;
}
/*******************************************************************************
* mvPexTargetWinSet - Set PEX to peripheral target address window BAR
*
* DESCRIPTION:
*
* INPUT:
*
* OUTPUT:
* N/A
*
* RETURN:
* MV_OK if PEX BAR target window was set correctly,
* MV_BAD_PARAM on bad params
* MV_ERROR otherwise
* (e.g. address window overlapps with other active PEX target window).
*
*******************************************************************************/
MV_STATUS mvPexTargetWinSet(MV_U32 pexIf, MV_U32 winNum,
MV_PEX_DEC_WIN *pAddrDecWin)
{
MV_DEC_REGS decRegs;
PEX_WIN_REG_INFO winRegInfo;
MV_TARGET_ATTRIB targetAttribs;
/* Parameter checking */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexTargetWinSet: ERR. Invalid PEX interface %d\n", pexIf);
return MV_BAD_PARAM;
}
if (winNum >= PEX_MAX_TARGET_WIN)
{
mvOsPrintf("mvPexTargetWinSet: ERR. Invalid PEX winNum %d\n", winNum);
return MV_BAD_PARAM;
}
/* get the pex Window registers offsets */
pexWinRegInfoGet(pexIf,winNum,&winRegInfo);
if (MV_TRUE == pAddrDecWin->enable)
{
/* 2) Check if the requested window overlaps with current windows */
if (MV_TRUE == pexWinOverlapDetect(pexIf,winNum, &pAddrDecWin->addrWin))
{
mvOsPrintf("mvPexTargetWinSet: ERR. Target %d overlap\n", winNum);
return MV_BAD_PARAM;
}
/* 2) Check if the requested window overlaps with current windows */
if (MV_FALSE == pexIsWinWithinBar(pexIf,&pAddrDecWin->addrWin))
{
mvOsPrintf("mvPexTargetWinSet: Win %d should be in bar boundries\n",
winNum);
return MV_BAD_PARAM;
}
}
/* read base register*/
if (winRegInfo.baseLowRegOffs)
{
decRegs.baseReg = MV_REG_READ(winRegInfo.baseLowRegOffs);
}
else
{
decRegs.baseReg = 0;
}
if (winRegInfo.sizeRegOffs)
{
decRegs.sizeReg = MV_REG_READ(winRegInfo.sizeRegOffs);
}
else
{
decRegs.sizeReg =0;
}
if (MV_OK != mvCtrlAddrDecToReg(&(pAddrDecWin->addrWin),&decRegs))
{
mvOsPrintf("mvPexTargetWinSet:mvCtrlAddrDecToReg Failed\n");
return MV_ERROR;
}
/* enable\Disable */
if (MV_TRUE == pAddrDecWin->enable)
{
decRegs.sizeReg |= PXWCR_WIN_EN;
}
else
{
decRegs.sizeReg &= ~PXWCR_WIN_EN;
}
/* clear bit location */
decRegs.sizeReg &= ~PXWCR_WIN_BAR_MAP_MASK;
/* set bar Mapping */
if (pAddrDecWin->targetBar == 1)
{
decRegs.sizeReg |= PXWCR_WIN_BAR_MAP_BAR1;
}
else if (pAddrDecWin->targetBar == 2)
{
decRegs.sizeReg |= PXWCR_WIN_BAR_MAP_BAR2;
}
mvCtrlAttribGet(pAddrDecWin->target,&targetAttribs);
/* set attributes */
decRegs.sizeReg &= ~PXWCR_ATTRIB_MASK;
decRegs.sizeReg |= targetAttribs.attrib << PXWCR_ATTRIB_OFFS;
/* set target ID */
decRegs.sizeReg &= ~PXWCR_TARGET_MASK;
decRegs.sizeReg |= targetAttribs.targetId << PXWCR_TARGET_OFFS;
/* 3) Write to address decode Base Address Register */
if (winRegInfo.baseLowRegOffs)
{
MV_REG_WRITE(winRegInfo.baseLowRegOffs, decRegs.baseReg);
}
/* write size reg */
if (winRegInfo.sizeRegOffs)
{
if ((MV_PEX_WIN_DEFAULT == winNum)||
(MV_PEX_WIN_EXP_ROM == winNum))
{
/* clear size because there is no size field*/
decRegs.sizeReg &= ~PXWCR_SIZE_MASK;
/* clear enable because there is no enable field*/
decRegs.sizeReg &= ~PXWCR_WIN_EN;
}
MV_REG_WRITE(winRegInfo.sizeRegOffs, decRegs.sizeReg);
}
return MV_OK;
}
/*******************************************************************************
* mvPexInit - Initialize PEX interfaces
*
* DESCRIPTION:
*
* This function is responsible of intialization of the Pex Interface , It
* configure the Pex Bars and Windows in the following manner:
*
* Assumptions :
* Bar0 is always internal registers bar
* Bar1 is always the DRAM bar
* Bar2 is always the Device bar
*
* 1) Sets the Internal registers bar base by obtaining the base from
* the CPU Interface
* 2) Sets the DRAM bar base and size by getting the base and size from
* the CPU Interface when the size is the sum of all enabled DRAM
* chip selects and the base is the base of CS0 .
* 3) Sets the Device bar base and size by getting these values from the
* CPU Interface when the base is the base of the lowest base of the
* Device chip selects, and the
*
*
* INPUT:
*
* pexIf - PEX interface number.
*
*
* OUTPUT:
* None.
*
* RETURN:
* MV_OK if function success otherwise MV_ERROR or MV_BAD_PARAM
*
*******************************************************************************/
MV_STATUS mvPexInit(MV_U32 pexIf, MV_PEX_TYPE pexType)
{
MV_U32 bar;
MV_U32 winNum;
MV_PEX_BAR pexBar;
MV_PEX_DEC_WIN pexWin;
MV_CPU_DEC_WIN addrDecWin;
MV_TARGET target;
MV_U32 pexCurrWin=0;
MV_U32 status;
/* default and exapntion rom
are always configured */
#ifndef MV_DISABLE_PEX_DEVICE_BAR
MV_U32 winIndex;
MV_U32 maxBase=0, sizeOfMaxBase=0;
MV_U32 pexStartWindow;
#endif
/* Parameter checking */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexInit: ERR. Invalid PEX interface %d\n", pexIf);
return MV_BAD_PARAM;
}
/* Enabled CPU access to PCI-Express */
mvCpuIfEnablePex(pexIf, pexType);
/* Start with bars */
/* First disable all PEX bars*/
for (bar = 0; bar < PEX_MAX_BARS; bar++)
{
if (PEX_INTER_REGS_BAR != bar)
{
if (MV_OK != mvPexBarEnable(pexIf, bar, MV_FALSE))
{
mvOsPrintf("mvPexInit:mvPexBarEnable bar =%d failed \n",bar);
return MV_ERROR;
}
}
}
/* and disable all PEX target windows */
for (winNum = 0; winNum < PEX_MAX_TARGET_WIN - 2; winNum++)
{
if (MV_OK != mvPexTargetWinEnable(pexIf, winNum, MV_FALSE))
{
mvOsPrintf("mvPexInit:mvPexTargetWinEnable winNum =%d failed \n",
winNum);
return MV_ERROR;
}
}
/* Now, go through all bars*/
/******************************************************************************/
/* Internal registers bar */
/******************************************************************************/
bar = PEX_INTER_REGS_BAR;
/* we only open the bar , no need to open windows for this bar */
/* first get the CS attribute from the CPU Interface */
if (MV_OK !=mvCpuIfTargetWinGet(INTER_REGS,&addrDecWin))
{
mvOsPrintf("mvPexInit: ERR. mvCpuIfTargetWinGet failed target =%d\n",INTER_REGS);
return MV_ERROR;
}
pexBar.addrWin.baseHigh = addrDecWin.addrWin.baseHigh;
pexBar.addrWin.baseLow = addrDecWin.addrWin.baseLow;
pexBar.addrWin.size = addrDecWin.addrWin.size;
pexBar.enable = MV_TRUE;
if (MV_OK != mvPexBarSet(pexIf, bar, &pexBar))
{
mvOsPrintf("mvPexInit: ERR. mvPexBarSet %d failed\n", bar);
return MV_ERROR;
}
/******************************************************************************/
/* DRAM bar */
/******************************************************************************/
bar = PEX_DRAM_BAR;
pexBar.addrWin.size = 0;
for (target = SDRAM_CS0;target < MV_DRAM_MAX_CS; target++ )
{
status = mvCpuIfTargetWinGet(target,&addrDecWin);
if((MV_NO_SUCH == status)&&(target != SDRAM_CS0))
{
continue;
}
/* first get attributes from CPU If */
if (MV_OK != status)
{
mvOsPrintf("mvPexInit: ERR. mvCpuIfTargetWinGet failed target =%d\n",target);
return MV_ERROR;
}
if (addrDecWin.enable == MV_TRUE)
{
/* the base is the base of DRAM CS0 always */
if (SDRAM_CS0 == target )
{
pexBar.addrWin.baseHigh = addrDecWin.addrWin.baseHigh;
pexBar.addrWin.baseLow = addrDecWin.addrWin.baseLow;
}
/* increment the bar size to be the sum of the size of all
DRAM chips selecs */
pexBar.addrWin.size += addrDecWin.addrWin.size;
/* set a Pex window for this target !
DRAM CS always will have a Pex Window , and is not a
part of the priority table */
pexWin.addrWin.baseHigh = addrDecWin.addrWin.baseHigh;
pexWin.addrWin.baseLow = addrDecWin.addrWin.baseLow;
pexWin.addrWin.size = addrDecWin.addrWin.size;
/* we disable the windows at first because we are not
sure that it is witihin bar boundries */
pexWin.enable =MV_FALSE;
pexWin.target = target;
pexWin.targetBar = bar;
if (MV_OK != mvPexTargetWinSet(pexIf,pexCurrWin++,&pexWin))
{
mvOsPrintf("mvPexInit: ERR. mvPexTargetWinSet failed\n");
return MV_ERROR;
}
}
}
/* check if the size of the bar is illeggal */
if (-1 == ctrlSizeToReg(pexBar.addrWin.size, PXBCR_BAR_SIZE_ALIGNMENT))
{
/* try to get a good size */
pexBar.addrWin.size = ctrlSizeRegRoundUp(pexBar.addrWin.size,
PXBCR_BAR_SIZE_ALIGNMENT);
}
/* check if the size and base are valid */
if (MV_TRUE == pexBarOverlapDetect(pexIf,bar,&pexBar.addrWin))
{
mvOsPrintf("mvPexInit:Warning :Bar %d size is illigal\n",bar);
mvOsPrintf("it will be disabled\n");
mvOsPrintf("please check Pex and CPU windows configuration\n");
}
else
{
pexBar.enable = MV_TRUE;
/* configure the bar */
if (MV_OK != mvPexBarSet(pexIf, bar, &pexBar))
{
mvOsPrintf("mvPexInit: ERR. mvPexBarSet %d failed\n", bar);
return MV_ERROR;
}
/* after the bar was configured then we enable the Pex windows*/
for (winNum = 0;winNum < pexCurrWin ;winNum++)
{
if (MV_OK != mvPexTargetWinEnable(pexIf, winNum, MV_TRUE))
{
mvOsPrintf("mvPexInit: Can't enable window =%d\n",winNum);
return MV_ERROR;
}
}
}
/******************************************************************************/
/* DEVICE bar */
/******************************************************************************/
/* Open the Device BAR for non linux only */
#ifndef MV_DISABLE_PEX_DEVICE_BAR
/* then device bar*/
bar = PEX_DEVICE_BAR;
/* save the starting window */
pexStartWindow = pexCurrWin;
pexBar.addrWin.size = 0;
pexBar.addrWin.baseLow = 0xffffffff;
pexBar.addrWin.baseHigh = 0;
maxBase = 0;
for (target = DEV_TO_TARGET(START_DEV_CS);target < DEV_TO_TARGET(MV_DEV_MAX_CS); target++ )
{
status = mvCpuIfTargetWinGet(target,&addrDecWin);
if (MV_NO_SUCH == status)
{
continue;
}
if (MV_OK != status)
{
mvOsPrintf("mvPexInit: ERR. mvCpuIfTargetWinGet failed target =%d\n",target);
return MV_ERROR;
}
if (addrDecWin.enable == MV_TRUE)
{
/* get the minimum base */
if (addrDecWin.addrWin.baseLow < pexBar.addrWin.baseLow)
{
pexBar.addrWin.baseLow = addrDecWin.addrWin.baseLow;
}
/* get the maximum base */
if (addrDecWin.addrWin.baseLow > maxBase)
{
maxBase = addrDecWin.addrWin.baseLow;
sizeOfMaxBase = addrDecWin.addrWin.size;
}
/* search in the priority table for this target */
for (winIndex = 0; pexDevBarPrioTable[winIndex] != TBL_TERM;
winIndex++)
{
if (pexDevBarPrioTable[winIndex] != target)
{
continue;
}
else if (pexDevBarPrioTable[winIndex] == target)
{
/*found it */
/* if the index of this target in the prio table is valid
then we set the Pex window for this target, a valid index is
an index that is lower than the number of the windows that
was not configured yet */
/* we subtract 2 always because the default and expantion
rom windows are always configured */
if ( pexCurrWin < PEX_MAX_TARGET_WIN - 2)
{
/* set a Pex window for this target ! */
pexWin.addrWin.baseHigh = addrDecWin.addrWin.baseHigh;
pexWin.addrWin.baseLow = addrDecWin.addrWin.baseLow;
pexWin.addrWin.size = addrDecWin.addrWin.size;
/* we disable the windows at first because we are not
sure that it is witihin bar boundries */
pexWin.enable = MV_FALSE;
pexWin.target = target;
pexWin.targetBar = bar;
if (MV_OK != mvPexTargetWinSet(pexIf,pexCurrWin++,
&pexWin))
{
mvOsPrintf("mvPexInit: ERR. Window Set failed\n");
return MV_ERROR;
}
}
}
}
}
}
pexBar.addrWin.size = maxBase - pexBar.addrWin.baseLow + sizeOfMaxBase;
pexBar.enable = MV_TRUE;
/* check if the size of the bar is illegal */
if (-1 == ctrlSizeToReg(pexBar.addrWin.size, PXBCR_BAR_SIZE_ALIGNMENT))
{
/* try to get a good size */
pexBar.addrWin.size = ctrlSizeRegRoundUp(pexBar.addrWin.size,
PXBCR_BAR_SIZE_ALIGNMENT);
}
/* check if the size and base are valid */
if (MV_TRUE == pexBarOverlapDetect(pexIf,bar,&pexBar.addrWin))
{
mvOsPrintf("mvPexInit:Warning :Bar %d size is illigal\n",bar);
mvOsPrintf("it will be disabled\n");
mvOsPrintf("please check Pex and CPU windows configuration\n");
}
else
{
if (MV_OK != mvPexBarSet(pexIf, bar, &pexBar))
{
mvOsPrintf("mvPexInit: ERR. mvPexBarSet %d failed\n", bar);
return MV_ERROR;
}
/* now enable the windows */
for (winNum = pexStartWindow; winNum < pexCurrWin ; winNum++)
{
if (MV_OK != mvPexTargetWinEnable(pexIf, winNum, MV_TRUE))
{
mvOsPrintf("mvPexInit:mvPexTargetWinEnable winNum =%d failed \n",
winNum);
return MV_ERROR;
}
}
}
#endif
return mvPexHalInit(pexIf, pexType);
}
/*******************************************************************************
* mvPexBarSet - Set PEX bar address and size
*
* DESCRIPTION:
*
* INPUT:
*
* OUTPUT:
* None.
*
* RETURN:
* MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexBarSet(MV_U32 pexIf,
MV_U32 barNum,
MV_PEX_BAR *pAddrWin)
{
MV_U32 regBaseLow;
MV_U32 regSize,sizeToReg;
/* check parameters */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexBarSet: ERR. Invalid PEX interface %d\n", pexIf);
return MV_BAD_PARAM;
}
if(barNum >= PEX_MAX_BARS)
{
mvOsPrintf("mvPexBarSet: ERR. Invalid bar number %d\n", barNum);
return MV_BAD_PARAM;
}
if (pAddrWin->addrWin.size == 0)
{
mvOsPrintf("mvPexBarSet: Size zero is Illigal\n" );
return MV_BAD_PARAM;
}
/* Check if the window complies with PEX spec */
if (MV_TRUE != pexBarIsValid(pAddrWin->addrWin.baseLow,
pAddrWin->addrWin.size))
{
mvOsPrintf("mvPexBarSet: ERR. Target %d window invalid\n", barNum);
return MV_BAD_PARAM;
}
/* 2) Check if the requested bar overlaps with current bars */
if (MV_TRUE == pexBarOverlapDetect(pexIf,barNum, &pAddrWin->addrWin))
{
mvOsPrintf("mvPexBarSet: ERR. Target %d overlap\n", barNum);
return MV_BAD_PARAM;
}
/* Get size register value according to window size */
sizeToReg = ctrlSizeToReg(pAddrWin->addrWin.size, PXBCR_BAR_SIZE_ALIGNMENT);
/* Read bar size */
if (PEX_INTER_REGS_BAR != barNum) /* internal registers have no size */
{
regSize = MV_REG_READ(PEX_BAR_CTRL_REG(pexIf,barNum));
/* Size parameter validity check. */
if (-1 == sizeToReg)
{
mvOsPrintf("mvPexBarSet: ERR. Target BAR %d size invalid.\n",barNum);
return MV_BAD_PARAM;
}
regSize &= ~PXBCR_BAR_SIZE_MASK;
regSize |= (sizeToReg << PXBCR_BAR_SIZE_OFFS) ;
MV_REG_WRITE(PEX_BAR_CTRL_REG(pexIf,barNum),regSize);
}
/* set size */
/* Read base address low */
regBaseLow = MV_REG_READ(PEX_CFG_DIRECT_ACCESS(pexIf,
PEX_MV_BAR_BASE(barNum)));
/* clear current base */
if (PEX_INTER_REGS_BAR == barNum)
{
regBaseLow &= ~PXBIR_BASE_MASK;
regBaseLow |= (pAddrWin->addrWin.baseLow & PXBIR_BASE_MASK);
}
else
{
regBaseLow &= ~PXBR_BASE_MASK;
regBaseLow |= (pAddrWin->addrWin.baseLow & PXBR_BASE_MASK);
}
/* if we had a previous value that contain the bar type (MeM\IO), we want to
restore it */
regBaseLow |= PEX_BAR_DEFAULT_ATTRIB;
/* write base low */
MV_REG_WRITE(PEX_CFG_DIRECT_ACCESS(pexIf,PEX_MV_BAR_BASE(barNum)),
regBaseLow);
if (pAddrWin->addrWin.baseHigh != 0)
{
/* Read base address high */
MV_REG_WRITE(PEX_CFG_DIRECT_ACCESS(pexIf,PEX_MV_BAR_BASE_HIGH(barNum)),
pAddrWin->addrWin.baseHigh);
}
/* lastly enable the Bar */
if (pAddrWin->enable == MV_TRUE)
{
if (PEX_INTER_REGS_BAR != barNum) /* internal registers
are enabled always */
{
MV_REG_BIT_SET(PEX_BAR_CTRL_REG(pexIf,barNum),PXBCR_BAR_EN);
}
}
else if (MV_FALSE == pAddrWin->enable)
{
if (PEX_INTER_REGS_BAR != barNum) /* internal registers
are enabled always */
{
MV_REG_BIT_RESET(PEX_BAR_CTRL_REG(pexIf,barNum),PXBCR_BAR_EN);
}
}
return MV_OK;
}