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/*******************************************************************************
Copyright (C) Marvell International Ltd. and its affiliates
This software file (the "File") is owned and distributed by Marvell
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Marvell copyright notice above.
********************************************************************************
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********************************************************************************
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********************************************************************************
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Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
#include "ctrlEnv/sys/mvSysPex.h"
/* this structure describes the mapping between a Pex Window and a CPU target*/
typedef struct _pexWinToTarget
{
MV_TARGET target;
MV_BOOL enable;
}PEX_WIN_TO_TARGET;
/* this array is a priority array that define How Pex windows should be
configured , We have only 6 Pex Windows that can be configured , but we
have maximum of 9 CPU target windows ! the following array is a priority
array where the lowest index has the highest priotiy and the highest
index has the lowest priority of being cnfigured */
MV_U32 pexDevBarPrioTable[] =
{
#if defined(MV_INCLUDE_DEVICE_CS0)
DEVICE_CS0,
#endif
#if defined(MV_INCLUDE_DEVICE_CS1)
DEVICE_CS1,
#endif
#if defined(MV_INCLUDE_DEVICE_CS2)
DEVICE_CS2,
#endif
#if defined(MV_INCLUDE_DEVICE_CS3)
DEVICE_CS3,
#endif
/*
#if defined(MV_INCLUDE_DEVICE_CS4)
DEVICE_CS4,
#endif
*/
TBL_TERM
};
/* PEX Wins registers offsets are inconsecutive. This struct describes WIN */
/* register offsets and its function where its is located. */
/* Also, PEX address remap registers offsets are inconsecutive. This struct */
/* describes address remap register offsets */
typedef struct _pexWinRegInfo
{
MV_U32 baseLowRegOffs;
MV_U32 baseHighRegOffs;
MV_U32 sizeRegOffs;
MV_U32 remapLowRegOffs;
MV_U32 remapHighRegOffs;
}PEX_WIN_REG_INFO;
static MV_STATUS pexWinOverlapDetect(MV_U32 pexIf, MV_U32 winNum,
MV_ADDR_WIN *pAddrWin);
static MV_STATUS pexWinRegInfoGet(MV_U32 pexIf, MV_U32 winNum,
PEX_WIN_REG_INFO *pWinRegInfo);
static MV_STATUS pexBarIsValid(MV_U32 baseLow, MV_U32 size);
static MV_BOOL pexIsWinWithinBar(MV_U32 pexIf,MV_ADDR_WIN *pAddrWin);
static MV_BOOL pexBarOverlapDetect(MV_U32 pexIf,MV_U32 barNum,
MV_ADDR_WIN *pAddrWin);
const MV_8* pexBarNameGet( MV_U32 bar );
/*******************************************************************************
* 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);
}
/*******************************************************************************
* 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;
}
/*******************************************************************************
* 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;
}
/*******************************************************************************
* 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;
}
/*******************************************************************************
* 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;
}
/*******************************************************************************
* mvPexTargetWinRemapEnable -
*
* DESCRIPTION:
*
* INPUT:
*
* OUTPUT:
*
* RETURN:
* MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
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;
}
/*******************************************************************************
* 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;
}
/*******************************************************************************
* mvPexBarGet - Get 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 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);
}
else /* PEX_INTER_REGS_BAR */
{
pAddrWin->addrWin.size = INTER_REGS_SIZE;
pAddrWin->enable = MV_TRUE;
}
return MV_OK;
}
/*******************************************************************************
* mvPexBarEnable -
*
* DESCRIPTION:
*
* INPUT:
*
* OUTPUT:
* None.
*
* RETURN:
* MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK
*
*******************************************************************************/
MV_STATUS mvPexBarEnable(MV_U32 pexIf, MV_U32 barNum, MV_BOOL enable)
{
MV_PEX_BAR pexBar;
/* check parameters */
if(pexIf >= mvCtrlPexMaxIfGet())
{
mvOsPrintf("mvPexBarEnable: ERR. Invalid PEX interface %d\n", pexIf);
return MV_BAD_PARAM;
}
if(barNum >= PEX_MAX_BARS)
{
mvOsPrintf("mvPexBarEnable: ERR. Invalid bar number %d\n", barNum);
return MV_BAD_PARAM;
}
if (PEX_INTER_REGS_BAR == barNum)
{
if (MV_TRUE == enable)
{
return MV_OK;
}
else
{
return MV_ERROR;
}
}
if (MV_FALSE == enable)
{
/* disable bar and quit */
MV_REG_BIT_RESET(PEX_BAR_CTRL_REG(pexIf,barNum),PXBCR_BAR_EN);
return MV_OK;
}
/* else */
if (mvPexBarGet(pexIf,barNum,&pexBar) != MV_OK)
{
mvOsPrintf("mvPexBarEnable: mvPexBarGet Failed\n");
return MV_ERROR;
}
if (MV_TRUE == pexBar.enable)
{
/* it is already enabled !!! */
return MV_OK;
}
/* else enable the bar*/
pexBar.enable = MV_TRUE;
if (mvPexBarSet(pexIf,barNum,&pexBar) != MV_OK)
{
mvOsPrintf("mvPexBarEnable: mvPexBarSet Failed\n");
return MV_ERROR;
}
return MV_OK;
}
/*******************************************************************************
* pexWinOverlapDetect - Detect address windows overlapping
*
* DESCRIPTION:
* This function detects address window overlapping of a given address
* window in PEX BARs.
*
* INPUT:
* pAddrWin - Address window to be checked.
* bar - BAR to be accessed by slave.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_TRUE if the given address window overlap current address
* decode map, MV_FALSE otherwise.
*
*******************************************************************************/
static MV_BOOL pexWinOverlapDetect(MV_U32 pexIf,
MV_U32 winNum,
MV_ADDR_WIN *pAddrWin)
{
MV_U32 win;
MV_PEX_DEC_WIN addrDecWin;
for(win = 0; win < PEX_MAX_TARGET_WIN -2 ; win++)
{
/* don't check our target or illegal targets */
if (winNum == win)
{
continue;
}
/* Get window parameters */
if (MV_OK != mvPexTargetWinGet(pexIf, win, &addrDecWin))
{
mvOsPrintf("pexWinOverlapDetect: ERR. TargetWinGet failed win=%x\n",
win);
return MV_ERROR;
}
/* Do not check disabled windows */
if (MV_FALSE == addrDecWin.enable)
{
continue;
}
if(MV_TRUE == ctrlWinOverlapTest(pAddrWin, &addrDecWin.addrWin))
{
mvOsPrintf("pexWinOverlapDetect: winNum %d overlap current %d\n",
winNum, win);
return MV_TRUE;
}
}
return MV_FALSE;
}
/*******************************************************************************
* pexIsWinWithinBar - Detect if address is within PEX bar boundries
*
* DESCRIPTION:
*
* INPUT:
*
* OUTPUT:
* None.
*
* RETURN:
* MV_TRUE if the given address window overlap current address
* decode map, MV_FALSE otherwise.
*
*******************************************************************************/
static MV_BOOL pexIsWinWithinBar(MV_U32 pexIf,
MV_ADDR_WIN *pAddrWin)
{
MV_U32 bar;
MV_PEX_BAR addrDecWin;
for(bar = 0; bar < PEX_MAX_BARS; bar++)
{
/* Get window parameters */
if (MV_OK != mvPexBarGet(pexIf, bar, &addrDecWin))
{
mvOsPrintf("pexIsWinWithinBar: ERR. mvPexBarGet failed\n");
return MV_ERROR;
}
/* Do not check disabled bars */
if (MV_FALSE == addrDecWin.enable)
{
continue;
}
if(MV_TRUE == ctrlWinWithinWinTest(pAddrWin, &addrDecWin.addrWin))
{
return MV_TRUE;
}
}
return MV_FALSE;
}
/*******************************************************************************
* pexBarOverlapDetect - Detect address windows overlapping
*
* DESCRIPTION:
* This function detects address window overlapping of a given address
* window in PEX BARs.
*
* INPUT:
* pAddrWin - Address window to be checked.
* bar - BAR to be accessed by slave.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_TRUE if the given address window overlap current address
* decode map, MV_FALSE otherwise.
*
*******************************************************************************/
static MV_BOOL pexBarOverlapDetect(MV_U32 pexIf,
MV_U32 barNum,
MV_ADDR_WIN *pAddrWin)
{
MV_U32 bar;
MV_PEX_BAR barDecWin;
for(bar = 0; bar < PEX_MAX_BARS; bar++)
{
/* don't check our target or illegal targets */
if (barNum == bar)
{
continue;
}
/* Get window parameters */
if (MV_OK != mvPexBarGet(pexIf, bar, &barDecWin))
{
mvOsPrintf("pexBarOverlapDetect: ERR. TargetWinGet failed\n");
return MV_ERROR;
}
/* don'nt check disabled bars */
if (barDecWin.enable == MV_FALSE)
{
continue;
}
if(MV_TRUE == ctrlWinOverlapTest(pAddrWin, &barDecWin.addrWin))
{
mvOsPrintf("pexBarOverlapDetect: winNum %d overlap current %d\n",
barNum, bar);
return MV_TRUE;
}
}
return MV_FALSE;
}
/*******************************************************************************
* pexBarIsValid - Check if the given address window is valid
*
* DESCRIPTION:
* PEX spec restrict BAR base to be aligned to BAR size.
* This function checks if the given address window is valid.
*
* INPUT:
* baseLow - 32bit low base address.
* size - Window size.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_TRUE if the address window is valid, MV_FALSE otherwise.
*
*******************************************************************************/
static MV_STATUS pexBarIsValid(MV_U32 baseLow, MV_U32 size)
{
/* PCI spec restrict BAR base to be aligned to BAR size */
if(MV_IS_NOT_ALIGN(baseLow, size))
{
return MV_ERROR;
}
else
{
return MV_TRUE;
}
return MV_TRUE;
}
/*******************************************************************************
* pexBarRegInfoGet - Get BAR register information
*
* DESCRIPTION:
* PEX BARs registers offsets are inconsecutive.
* This function gets a PEX BAR register information like register offsets
* and function location of the BAR.
*
* INPUT:
* pexIf - PEX interface number.
* bar - The PEX BAR in question.
*
* OUTPUT:
* pBarRegInfo - BAR register info struct.
*
* RETURN:
* MV_BAD_PARAM when bad parameters ,MV_ERROR on error ,othewise MV_OK
*
*******************************************************************************/
static MV_STATUS pexWinRegInfoGet(MV_U32 pexIf,
MV_U32 winNum,
PEX_WIN_REG_INFO *pWinRegInfo)
{
if ((winNum >= 0)&&(winNum <=3))
{
pWinRegInfo->baseLowRegOffs = PEX_WIN0_3_BASE_REG(pexIf,winNum);
pWinRegInfo->baseHighRegOffs = 0;
pWinRegInfo->sizeRegOffs = PEX_WIN0_3_CTRL_REG(pexIf,winNum);
pWinRegInfo->remapLowRegOffs = PEX_WIN0_3_REMAP_REG(pexIf,winNum);
pWinRegInfo->remapHighRegOffs = 0;
}
else if ((winNum >= 4)&&(winNum <=5))
{
pWinRegInfo->baseLowRegOffs = PEX_WIN4_5_BASE_REG(pexIf,winNum);
pWinRegInfo->baseHighRegOffs = 0;
pWinRegInfo->sizeRegOffs = PEX_WIN4_5_CTRL_REG(pexIf,winNum);
pWinRegInfo->remapLowRegOffs = PEX_WIN4_5_REMAP_REG(pexIf,winNum);
pWinRegInfo->remapHighRegOffs = PEX_WIN4_5_REMAP_HIGH_REG(pexIf,winNum);
}
else if (MV_PEX_WIN_DEFAULT == winNum)
{
pWinRegInfo->baseLowRegOffs = 0;
pWinRegInfo->baseHighRegOffs = 0;
pWinRegInfo->sizeRegOffs = PEX_WIN_DEFAULT_CTRL_REG(pexIf);
pWinRegInfo->remapLowRegOffs = 0;
pWinRegInfo->remapHighRegOffs = 0;
}
else if (MV_PEX_WIN_EXP_ROM == winNum)
{
pWinRegInfo->baseLowRegOffs = 0;
pWinRegInfo->baseHighRegOffs = 0;
pWinRegInfo->sizeRegOffs = PEX_WIN_EXP_ROM_CTRL_REG(pexIf);
pWinRegInfo->remapLowRegOffs = PEX_WIN_EXP_ROM_REMAP_REG(pexIf);
pWinRegInfo->remapHighRegOffs = 0;
}
return MV_OK;
}
/*******************************************************************************
* pexBarNameGet - Get the string name of PEX BAR.
*
* DESCRIPTION:
* This function get the string name of PEX BAR.
*
* INPUT:
* bar - PEX bar number.
*
* OUTPUT:
* None.
*
* RETURN:
* pointer to the string name of PEX BAR.
*
*******************************************************************************/
const MV_8* pexBarNameGet( MV_U32 bar )
{
switch( bar )
{
case PEX_INTER_REGS_BAR:
return "Internal Regs Bar0....";
case PEX_DRAM_BAR:
return "DRAM Bar1.............";
case PEX_DEVICE_BAR:
return "Devices Bar2..........";
default:
return "Bar unknown";
}
}
/*******************************************************************************
* mvPexAddrDecShow - Print the PEX address decode map (BARs and windows).
*
* DESCRIPTION:
* This function print the PEX address decode map (BARs and windows).
*
* INPUT:
* None.
*
* OUTPUT:
* None.
*
* RETURN:
* None.
*
*******************************************************************************/
MV_VOID mvPexAddrDecShow(MV_VOID)
{
MV_PEX_BAR pexBar;
MV_PEX_DEC_WIN win;
MV_U32 pexIf;
MV_U32 bar,winNum;
for( pexIf = 0; pexIf < mvCtrlPexMaxIfGet(); pexIf++ )
{
if (MV_FALSE == mvCtrlPwrClckGet(PEX_UNIT_ID, pexIf)) continue;
mvOsOutput( "\n" );
mvOsOutput( "PEX%d:\n", pexIf );
mvOsOutput( "-----\n" );
mvOsOutput( "\nPex Bars \n\n");
for( bar = 0; bar < PEX_MAX_BARS; bar++ )
{
memset( &pexBar, 0, sizeof(MV_PEX_BAR) );
mvOsOutput( "%s ", pexBarNameGet(bar) );
if( mvPexBarGet( pexIf, bar, &pexBar ) == MV_OK )
{
if( pexBar.enable )
{
mvOsOutput( "base %08x, ", pexBar.addrWin.baseLow );
mvSizePrint( pexBar.addrWin.size );
mvOsOutput( "\n" );
}
else
mvOsOutput( "disable\n" );
}
}
mvOsOutput( "\nPex Decode Windows\n\n");
for( winNum = 0; winNum < PEX_MAX_TARGET_WIN - 2; winNum++)
{
memset( &win, 0,sizeof(MV_PEX_DEC_WIN) );
mvOsOutput( "win%d - ", winNum );
if ( mvPexTargetWinGet(pexIf,winNum,&win) == MV_OK)
{
if (win.enable)
{
mvOsOutput( "%s base %08x, ",
mvCtrlTargetNameGet(win.target), win.addrWin.baseLow );
mvOsOutput( "...." );
mvSizePrint( win.addrWin.size );
mvOsOutput( "\n" );
}
else
mvOsOutput( "disable\n" );
}
}
memset( &win, 0,sizeof(MV_PEX_DEC_WIN) );
mvOsOutput( "default win - " );
if ( mvPexTargetWinGet(pexIf, MV_PEX_WIN_DEFAULT, &win) == MV_OK)
{
mvOsOutput( "%s ",
mvCtrlTargetNameGet(win.target) );
mvOsOutput( "\n" );
}
memset( &win, 0,sizeof(MV_PEX_DEC_WIN) );
mvOsOutput( "Expansion ROM - " );
if ( mvPexTargetWinGet(pexIf, MV_PEX_WIN_EXP_ROM, &win) == MV_OK)
{
mvOsOutput( "%s ",
mvCtrlTargetNameGet(win.target) );
mvOsOutput( "\n" );
}
}
}