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/*******************************************************************************
Copyright (C) Marvell International Ltd. and its affiliates
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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,
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
#include "mvCommon.h"
#include "mvOs.h"
#include "ctrlEnv/mvCtrlEnvSpec.h"
#include "mvUsbRegs.h"
#include "mvUsb.h"
MV_TARGET usbAddrDecPrioTab[] = {
#if defined(MV_INCLUDE_SDRAM_CS0)
SDRAM_CS0,
#endif
#if defined(MV_INCLUDE_SDRAM_CS1)
SDRAM_CS1,
#endif
#if defined(MV_INCLUDE_SDRAM_CS2)
SDRAM_CS2,
#endif
#if defined(MV_INCLUDE_SDRAM_CS3)
SDRAM_CS3,
#endif
#if defined(MV_INCLUDE_CESA) && defined(USB_UNDERRUN_WA)
CRYPT_ENG,
#endif
#if defined(MV_INCLUDE_PEX)
#if defined(MV_INCLUDE_PEX0)
PEX0_MEM,
#endif
#if defined(MV_INCLUDE_PEX1)
PEX1_MEM,
#endif
#endif
TBL_TERM
};
/*******************************************************************************
* usbWinOverlapDetect - Detect USB address windows overlapping
*
* DESCRIPTION:
* An unpredicted behaviur is expected in case USB address decode
* windows overlapps.
* This function detects USB address decode windows overlapping of a
* specified window. The function does not check the window itself for
* overlapping. The function also skipps disabled address decode windows.
*
* INPUT:
* winNum - address decode window number.
* pAddrDecWin - An address decode window struct.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_TRUE if the given address window overlap current address
* decode map, MV_FALSE otherwise, MV_ERROR if reading invalid data
* from registers.
*
*******************************************************************************/
static MV_STATUS usbWinOverlapDetect(MV_U32 dev, MV_U32 winNum, MV_ADDR_WIN *pAddrWin)
{
MV_U32 winNumIndex;
MV_UNIT_WIN_INFO addrDecWin;
for (winNumIndex = 0; winNumIndex < MV_USB_MAX_ADDR_DECODE_WIN; winNumIndex++) {
/* Do not check window itself */
if (winNumIndex == winNum)
continue;
/* Get window parameters */
if (MV_OK != mvUsbWinRead(dev, winNumIndex, &addrDecWin)) {
mvOsPrintf("%s: ERR. TargetWinGet failed\n", __func__);
return MV_ERROR;
}
/* Do not check disabled windows */
if (addrDecWin.enable == MV_FALSE)
continue;
if (MV_TRUE == mvWinOverlapTest(pAddrWin, &(addrDecWin.addrWin)))
return MV_TRUE;
}
return MV_FALSE;
}
/*******************************************************************************
* mvUsbWinWrite - Set USB target address window
*
* DESCRIPTION:
* This function sets a peripheral target (e.g. SDRAM bank0, PCI_MEM0)
* address window, also known as address decode window.
* After setting this target window, the USB will be able to access the
* target within the address window.
*
* INPUT:
* winNum - USB target address decode window number.
* pAddrDecWin - USB target window data structure.
*
* OUTPUT:
* None.
*
* RETURN:
* MV_ERROR if address window overlapps with other address decode windows.
* MV_BAD_PARAM if base address is invalid parameter or target is
* unknown.
*
*******************************************************************************/
MV_STATUS mvUsbWinWrite(MV_U32 dev, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin)
{
MV_U32 sizeReg, baseReg;
MV_U32 size;
/* Parameter checking */
if (winNum >= MV_USB_MAX_ADDR_DECODE_WIN) {
mvOsPrintf("%s: ERR. Invalid win num %d\n", __func__, winNum);
return MV_BAD_PARAM;
}
/* Check if the requested window overlapps with current windows */
if (MV_TRUE == usbWinOverlapDetect(dev, winNum, &pDecWin->addrWin)) {
mvOsPrintf("%s: ERR. Window %d overlap\n", __func__, winNum);
return MV_ERROR;
}
/* check if address is aligned to the size */
if (MV_IS_NOT_ALIGN(pDecWin->addrWin.baseLow, pDecWin->addrWin.size)) {
mvOsPrintf("mvUsbWinWrite:Error setting USB window %d.\n"
"Address 0x%08x is unaligned to size 0x%x.\n",
winNum, pDecWin->addrWin.baseLow, pDecWin->addrWin.size);
return MV_ERROR;
}
if (!MV_IS_POWER_OF_2(pDecWin->addrWin.size)) {
mvOsPrintf("mvUsbWinWrite: Bad windows size.\n");
return MV_BAD_PARAM;
}
size = pDecWin->addrWin.size / MV_USB_WIN_SIZE_ALIGN - 1;
/* set Size, Attributes and TargetID */
sizeReg = (((pDecWin->targetId << MV_USB_WIN_TARGET_OFFSET) & MV_USB_WIN_TARGET_MASK) |
((pDecWin->attrib << MV_USB_WIN_ATTR_OFFSET) & MV_USB_WIN_ATTR_MASK) |
((size << MV_USB_WIN_SIZE_OFFSET) & MV_USB_WIN_SIZE_MASK));
#if defined(MV645xx) || defined(MV646xx)
/* If window is DRAM with HW cache coherency, make sure bit2 is set */
sizeReg &= ~MV_USB_WIN_BURST_WR_LIMIT_MASK;
if ((MV_TARGET_IS_DRAM(pDecWin->target)) && (pDecWin->addrWinAttr.cachePolicy != NO_COHERENCY))
sizeReg |= MV_USB_WIN_BURST_WR_32BIT_LIMIT;
else
sizeReg |= MV_USB_WIN_BURST_WR_NO_LIMIT;
#endif /* MV645xx || MV646xx */
if (pDecWin->enable == MV_TRUE)
sizeReg |= MV_USB_WIN_ENABLE_MASK;
else
sizeReg &= ~MV_USB_WIN_ENABLE_MASK;
/* Update Base value */
baseReg = (pDecWin->addrWin.baseLow & MV_USB_WIN_BASE_MASK);
MV_REG_WRITE(MV_USB_WIN_CTRL_REG(dev, winNum), sizeReg);
MV_REG_WRITE(MV_USB_WIN_BASE_REG(dev, winNum), baseReg);
return MV_OK;
}
/*******************************************************************************
* mvUsbWinRead - Get USB peripheral target address window.
*
* DESCRIPTION:
* Get USB peripheral target address window.
*
* INPUT:
* winNum - USB target address decode window number.
*
* OUTPUT:
* pDecWin - USB target window data structure.
*
* RETURN:
* MV_ERROR if register parameters are invalid.
*
*******************************************************************************/
MV_STATUS mvUsbWinRead(MV_U32 dev, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin)
{
MV_U32 sizeReg, baseReg;
/* Parameter checking */
if (winNum >= MV_USB_MAX_ADDR_DECODE_WIN) {
mvOsPrintf("%s (dev=%d): ERR. Invalid winNum %d\n", __func__, dev, winNum);
return MV_NOT_SUPPORTED;
}
baseReg = MV_REG_READ(MV_USB_WIN_BASE_REG(dev, winNum));
sizeReg = MV_REG_READ(MV_USB_WIN_CTRL_REG(dev, winNum));
/* Check if window is enabled */
if (sizeReg & MV_USB_WIN_ENABLE_MASK) {
pDecWin->enable = MV_TRUE;
/* Extract window parameters from registers */
pDecWin->targetId = (sizeReg & MV_USB_WIN_TARGET_MASK) >> MV_USB_WIN_TARGET_OFFSET;
pDecWin->attrib = (sizeReg & MV_USB_WIN_ATTR_MASK) >> MV_USB_WIN_ATTR_OFFSET;
pDecWin->addrWin.size = (sizeReg & MV_USB_WIN_SIZE_MASK) >> MV_USB_WIN_SIZE_OFFSET;
pDecWin->addrWin.size = (pDecWin->addrWin.size + 1) * MV_USB_WIN_SIZE_ALIGN;
pDecWin->addrWin.baseLow = (baseReg & MV_USB_WIN_BASE_MASK);
pDecWin->addrWin.baseHigh = 0;
} else {
pDecWin->enable = MV_FALSE;
}
return MV_OK;
}
/*******************************************************************************
* mvUsbWinInit -
*
* INPUT:
*
* OUTPUT:
*
* RETURN:
* MV_ERROR if register parameters are invalid.
*
*******************************************************************************/
MV_STATUS mvUsbWinInit(MV_U32 dev, MV_UNIT_WIN_INFO *addrWinMap)
{
MV_UNIT_WIN_INFO *addrDecWin;
MV_U32 winNum;
MV_U32 winPrioIndex = 0;
/* First disable all address decode windows */
for (winNum = 0; winNum < MV_USB_MAX_ADDR_DECODE_WIN; winNum++)
MV_REG_BIT_RESET(MV_USB_WIN_CTRL_REG(dev, winNum), MV_USB_WIN_ENABLE_MASK);
/* Go through all windows in user table until table terminator */
winNum = 0;
while ((usbAddrDecPrioTab[winPrioIndex] != TBL_TERM) && (winNum < MV_USB_MAX_ADDR_DECODE_WIN)) {
addrDecWin = &addrWinMap[usbAddrDecPrioTab[winPrioIndex]];
if (addrDecWin->enable == MV_TRUE) {
#if defined(MV645xx) || defined(MV646xx)
/* Get the default attributes for that target window */
mvCtrlDefAttribGet(usbWin.target, &usbWin.addrWinAttr);
#endif /* MV645xx || MV646xx */
if (MV_OK != mvUsbWinWrite(dev, winNum, addrDecWin))
return MV_ERROR;
winNum++;
}
winPrioIndex++;
}
return MV_OK;
}