/*******************************************************************************
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********************************************************************************
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*******************************************************************************/

#include "mvCommon.h"
#include "mvOs.h"
#ifndef CONFIG_OF
#include "ctrlEnv/mvCtrlEnvSpec.h"
#endif
#include "mvSysCesaConfig.h"
#include "mvCesaRegs.h"
#include "mvCesa.h"
#include "AES/mvAes.h"
#include "mvMD5.h"
#include "mvSHA1.h"
#include "mvSHA256.h"

#undef CESA_DEBUG

/********** Global variables **********/

/*  If request size is more than MV_CESA_MAX_BUF_SIZE the
 *  request is processed as fragmented request.
 */

MV_CESA_STATS cesaStats;
MV_16 cesaLastSid[MV_CESA_CHANNELS];
MV_CESA_SA **pCesaSAD = NULL;
MV_U32 cesaMaxSA = 0;
MV_CESA_REQ *pCesaReqFirst[MV_CESA_CHANNELS];
MV_CESA_REQ *pCesaReqLast[MV_CESA_CHANNELS];
MV_CESA_REQ *pCesaReqEmpty[MV_CESA_CHANNELS];
MV_CESA_REQ *pCesaReqProcess[MV_CESA_CHANNELS];
#if defined(MV_CESA_INT_COALESCING_SUPPORT) || defined(CONFIG_OF)
MV_CESA_REQ *pCesaReqStartNext[MV_CESA_CHANNELS];
MV_CESA_REQ *pCesaReqProcessCurr[MV_CESA_CHANNELS];
#endif

int cesaQueueDepth[MV_CESA_CHANNELS];
int cesaReqResources[MV_CESA_CHANNELS];

MV_CESA_SRAM_MAP *cesaSramVirtPtr[MV_CESA_CHANNELS];
void *cesaOsHandle = NULL;
MV_U16 ctrlModel;
MV_U8 ctrlRev;
MV_U32 sha2CmdVal;

#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)

MV_U32 cesaChainLength[MV_CESA_CHANNELS];
int chainReqNum[MV_CESA_CHANNELS];
MV_U32 chainIndex[MV_CESA_CHANNELS];
MV_CESA_REQ *pNextActiveChain[MV_CESA_CHANNELS];
MV_CESA_REQ *pEndCurrChain[MV_CESA_CHANNELS];
MV_BOOL isFirstReq[MV_CESA_CHANNELS];

#endif /* MV_CESA_CHAIN_MODE || CONFIG_OF */

static MV_CESA_HAL_DATA cesaHalData;

static INLINE MV_U8 *mvCesaSramAddrGet(MV_U8 chan)
{
	return (MV_U8 *) cesaHalData.sramPhysBase[chan];
}

static INLINE MV_ULONG mvCesaSramVirtToPhys(MV_U8 chan, void *pDev, MV_U8 *pSramVirt)
{
	return (MV_ULONG) (pSramVirt - cesaHalData.sramVirtBase[chan]) + cesaHalData.sramPhysBase[chan];
}

/* Internal Function prototypes */

static INLINE void mvCesaSramDescrBuild(MV_U8 chan, MV_U32 config, int frag,
					int cryptoOffset, int ivOffset, int cryptoLength,
					int macOffset, int digestOffset, int macLength, int macTotalLen,
					MV_CESA_REQ *pCesaReq, MV_DMA_DESC *pDmaDesc);

static INLINE void mvCesaSramSaUpdate(MV_U8 chan, short sid, MV_DMA_DESC *pDmaDesc);

static INLINE int mvCesaDmaCopyPrepare(MV_U8 chan, MV_CESA_MBUF *pMbuf, MV_U8 *pSramBuf,
				       MV_DMA_DESC *pDmaDesc, MV_BOOL isToMbuf,
				       int offset, int copySize, MV_BOOL skipFlush);

static void mvCesaHmacIvGet(MV_CESA_MAC_MODE macMode, unsigned char key[], int keyLength,
			    unsigned char innerIV[], unsigned char outerIV[]);

static MV_STATUS mvCesaFragAuthComplete(MV_U8 chan, MV_CESA_REQ *pReq, MV_CESA_SA *pSA, int macDataSize);

static MV_CESA_COMMAND *mvCesaCtrModeInit(void);

static MV_STATUS mvCesaCtrModePrepare(MV_CESA_COMMAND *pCtrModeCmd, MV_CESA_COMMAND *pCmd);
static MV_STATUS mvCesaCtrModeComplete(MV_CESA_COMMAND *pOrgCmd, MV_CESA_COMMAND *pCmd);
static void mvCesaCtrModeFinish(MV_CESA_COMMAND *pCmd);

static INLINE MV_STATUS mvCesaReqProcess(MV_U8 chan, MV_CESA_REQ *pReq);
static MV_STATUS mvCesaFragReqProcess(MV_U8 chan, MV_CESA_REQ *pReq, MV_U8 frag);

static INLINE MV_STATUS mvCesaParamCheck(MV_CESA_SA *pSA, MV_CESA_COMMAND *pCmd, MV_U8 *pFixOffset);
static INLINE MV_STATUS mvCesaFragParamCheck(MV_U8 chan, MV_CESA_SA *pSA, MV_CESA_COMMAND *pCmd);

static INLINE void mvCesaFragSizeFind(MV_CESA_SA *pSA, MV_CESA_REQ *pReq,
				      int cryptoOffset, int macOffset,
				      int *pCopySize, int *pCryptoDataSize, int *pMacDataSize);
static MV_STATUS mvCesaMbufCacheUnmap(MV_CESA_MBUF *pMbuf, int offset, int size);
static MV_STATUS mvCesaUpdateSADSize(MV_U32 size);

/* Go to the next request in the request queue */
static INLINE MV_CESA_REQ *MV_CESA_REQ_NEXT_PTR(MV_U8 chan, MV_CESA_REQ *pReq)
{
	if (pReq == pCesaReqLast[chan])
		return pCesaReqFirst[chan];

	return (pReq + 1);
}

/* Go to the previous request in the request queue */
static INLINE MV_CESA_REQ *MV_CESA_REQ_PREV_PTR(MV_U8 chan, MV_CESA_REQ *pReq)
{
	if (pReq == pCesaReqFirst[chan])
		return pCesaReqLast[chan];

	return (pReq - 1);
}

static INLINE void mvCesaReqProcessStart(MV_U8 chan, MV_CESA_REQ *pReq)
{
	MV_32 frag;

#ifdef MV_CESA_CHAIN_MODE
	pReq->state = MV_CESA_CHAIN;
#elif CONFIG_OF
	if (mv_cesa_feature == CHAIN)
		pReq->state = MV_CESA_CHAIN;
	else
		pReq->state = MV_CESA_PROCESS;
#else
	pReq->state = MV_CESA_PROCESS;
#endif /* MV_CESA_CHAIN_MODE */

	cesaStats.startCount++;
	(pReq->use)++;

	if (pReq->fragMode == MV_CESA_FRAG_NONE) {
		frag = 0;
	} else {
		frag = pReq->frags.nextFrag;
		pReq->frags.nextFrag++;
	}

	/* Enable TDMA engine */
	MV_REG_WRITE(MV_CESA_TDMA_CURR_DESC_PTR_REG(chan), 0);
	MV_REG_WRITE(MV_CESA_TDMA_NEXT_DESC_PTR_REG(chan),
		     (MV_U32) mvCesaVirtToPhys(&pReq->dmaDescBuf, pReq->dma[frag].pDmaFirst));

#if defined(MV_BRIDGE_SYNC_REORDER)
	mvOsBridgeReorderWA();
#endif

	/* Start Accelerator */
	/* For KW2/Z2, DSMP/Z1: Enable also bit[31] for SHA-2 support */
	MV_REG_BIT_SET(MV_CESA_CMD_REG(chan), (MV_CESA_CMD_CHAN_ENABLE_MASK | sha2CmdVal));
}

/*******************************************************************************
* mvCesaHalInit - Initialize the CESA driver
*
* DESCRIPTION:
*       This function initialize the CESA driver.
*       1) Session database
*       2) Request queue
*       4) DMA descriptor lists - one list per request. Each list
*           has MV_CESA_MAX_DMA_DESC descriptors.
*
* INPUT:
*       numOfSession    - maximum number of supported sessions
*       queueDepth      - number of elements in the request queue.
*	    osHandle	    - A handle used by the OS to allocate memory for the
*			            module (Passed to the OS Services layer)
*
* RETURN:
*       MV_OK           - Success
*       MV_NO_RESOURCE  - Fail, can't allocate resources:
*                         Session database, request queue,
*                         DMA descriptors list, LRU cache database.
*       MV_NOT_ALIGNED  - Sram base address is not 8 byte aligned.
*
*******************************************************************************/
MV_STATUS mvCesaHalInit(int numOfSession, int queueDepth, void *osHandle, MV_CESA_HAL_DATA *halData)
{
	int i, req;
	MV_U32 descOffsetReg, configReg;
	MV_U8 chan;

	cesaOsHandle = osHandle;
	sha2CmdVal = 0;

#ifdef CONFIG_OF
	mvOsPrintf("mvCesaInit: channels=%d, session=%d, queue=%d\n",
	    mv_cesa_channels, numOfSession, queueDepth);
#else
	mvOsPrintf("mvCesaInit: channels=%d, session=%d, queue=%d\n", MV_CESA_CHANNELS, numOfSession, queueDepth);
#endif

	/* Create initial Session database */
	pCesaSAD = mvOsMalloc(sizeof(MV_CESA_SA *) * numOfSession);
	if (pCesaSAD == NULL) {
		mvOsPrintf("mvCesaInit: Can't allocate %u bytes for %d SAs\n",
			   sizeof(MV_CESA_SA *) * numOfSession, numOfSession);
		mvCesaFinish();
		return MV_NO_RESOURCE;
	}
	memset(pCesaSAD, 0, sizeof(MV_CESA_SA *) * numOfSession);
	cesaMaxSA = numOfSession;

	ctrlModel = halData->ctrlModel;
	ctrlRev = halData->ctrlRev;

	/* Initiliaze per channel resources */
#ifdef CONFIG_OF
	for (chan = 0; chan < mv_cesa_channels; chan++) {
#else
	for (chan = 0; chan < MV_CESA_CHANNELS; chan++) {
#endif

		cesaSramVirtPtr[chan] = (MV_CESA_SRAM_MAP *) (halData->sramVirtBase[chan] + halData->sramOffset[chan]);

		/* Create request queue */
		pCesaReqFirst[chan] = mvOsMalloc(sizeof(MV_CESA_REQ) * queueDepth);
		if (pCesaReqFirst[chan] == NULL) {
			mvOsPrintf("mvCesaInit: Can't allocate %u bytes for %d requests\n",
				   sizeof(MV_CESA_REQ) * queueDepth, queueDepth);
			mvCesaFinish();
			return MV_NO_RESOURCE;
		}
		memset(pCesaReqFirst[chan], 0, sizeof(MV_CESA_REQ) * queueDepth);
		pCesaReqEmpty[chan] = pCesaReqFirst[chan];
		pCesaReqLast[chan] = pCesaReqFirst[chan] + (queueDepth - 1);
		pCesaReqProcess[chan] = pCesaReqEmpty[chan];
#if defined(MV_CESA_INT_COALESCING_SUPPORT) || defined(CONFIG_OF)
#ifdef CONFIG_OF
		if (mv_cesa_feature == INT_COALESCING) {
#endif /* CONFIG_OF */
			pCesaReqStartNext[chan] = pCesaReqFirst[chan];
			pCesaReqProcessCurr[chan] = NULL;
#ifdef CONFIG_OF
		}
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_COALESCING_SUPPORT || CONFIG_OF */
		cesaQueueDepth[chan] = queueDepth;
		cesaReqResources[chan] = queueDepth;
		cesaLastSid[chan] = -1;
#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
#ifdef CONFIG_OF
		if (mv_cesa_feature == CHAIN) {
#endif /* CONFIG_OF */
			cesaChainLength[chan] = MAX_CESA_CHAIN_LENGTH;
			chainReqNum[chan] = 0;
			chainIndex[chan] = 0;
			pNextActiveChain[chan] = NULL;
			pEndCurrChain[chan] = NULL;
			isFirstReq[chan] = MV_TRUE;
#ifdef CONFIG_OF
		}
#endif /* CONFIG_OF */
#endif /* MV_CESA_CHAIN_MODE || CONFIG_OF */

		/* pSramBase must be 8 byte aligned */
		if (MV_IS_NOT_ALIGN((MV_ULONG) cesaSramVirtPtr[chan], 8)) {
			mvOsPrintf("mvCesaInit: pSramBase (%p) must be 8 byte aligned\n", cesaSramVirtPtr[chan]);
			mvCesaFinish();
			return MV_NOT_ALIGNED;
		}

		/* Clear registers */
		MV_REG_WRITE(MV_CESA_CFG_REG(chan), 0);
		MV_REG_WRITE(MV_CESA_ISR_CAUSE_REG(chan), 0);
		MV_REG_WRITE(MV_CESA_ISR_MASK_REG(chan), 0);

		/* Initialize DMA descriptor lists for all requests in Request queue */
		descOffsetReg = configReg = 0;
		for (req = 0; req < queueDepth; req++) {
			int frag;
			MV_CESA_REQ *pReq;
			MV_DMA_DESC *pDmaDesc;

			pReq = &pCesaReqFirst[chan][req];

			pReq->cesaDescBuf.bufSize = sizeof(MV_CESA_DESC) * MV_CESA_MAX_REQ_FRAGS + CPU_D_CACHE_LINE_SIZE;

			pReq->cesaDescBuf.bufVirtPtr = mvOsIoCachedMalloc(osHandle, pReq->cesaDescBuf.bufSize,
							&pReq->cesaDescBuf.bufPhysAddr,
							&pReq->cesaDescBuf.memHandle);
			if (pReq->cesaDescBuf.bufVirtPtr == NULL) {
				mvOsPrintf("mvCesaInit: req=%d, Can't allocate %d bytes for CESA descriptors\n",
						req, pReq->cesaDescBuf.bufSize);
				mvCesaFinish();
				return MV_NO_RESOURCE;
			}
			memset(pReq->cesaDescBuf.bufVirtPtr, 0, pReq->cesaDescBuf.bufSize);

			pReq->pCesaDesc = (MV_CESA_DESC *) MV_ALIGN_UP((MV_ULONG) pReq->cesaDescBuf.bufVirtPtr,
							CPU_D_CACHE_LINE_SIZE);

			pReq->dmaDescBuf.bufSize = sizeof(MV_DMA_DESC) * MV_CESA_MAX_DMA_DESC * MV_CESA_MAX_REQ_FRAGS +
							CPU_D_CACHE_LINE_SIZE;

			pReq->dmaDescBuf.bufVirtPtr = mvOsIoCachedMalloc(osHandle, pReq->dmaDescBuf.bufSize,
							&pReq->dmaDescBuf.bufPhysAddr, &pReq->dmaDescBuf.memHandle);

			if (pReq->dmaDescBuf.bufVirtPtr == NULL) {
				mvOsPrintf("mvCesaInit: req=%d, Can't allocate %d bytes for DMA descriptor list\n",
					req, pReq->dmaDescBuf.bufSize);
				mvCesaFinish();
				return MV_NO_RESOURCE;
			}
			memset(pReq->dmaDescBuf.bufVirtPtr, 0, pReq->dmaDescBuf.bufSize);
			pDmaDesc = (MV_DMA_DESC *) MV_ALIGN_UP((MV_ULONG) pReq->dmaDescBuf.bufVirtPtr,
						CPU_D_CACHE_LINE_SIZE);

			for (frag = 0; frag < MV_CESA_MAX_REQ_FRAGS; frag++) {
				MV_CESA_DMA *pDma = &pReq->dma[frag];

				pDma->pDmaFirst = pDmaDesc;
				pDma->pDmaLast = NULL;

				for (i = 0; i < MV_CESA_MAX_DMA_DESC - 1; i++) {
					/* link all DMA descriptors together */
					pDma->pDmaFirst[i].phyNextDescPtr =
						MV_32BIT_LE(mvCesaVirtToPhys(&pReq->dmaDescBuf, &pDmaDesc[i + 1]));
				}
				pDma->pDmaFirst[i].phyNextDescPtr = 0;
				mvOsCacheFlush(cesaOsHandle, &pDma->pDmaFirst[0], MV_CESA_MAX_DMA_DESC * sizeof(MV_DMA_DESC));

				pDmaDesc += MV_CESA_MAX_DMA_DESC;
			}
		}

		/*mvCesaCryptoIvSet(NULL, MV_CESA_MAX_IV_LENGTH); */
		descOffsetReg = (MV_U16)((MV_U8 *)&cesaSramVirtPtr[chan]->desc - mvCesaSramAddrGet(chan));
		MV_REG_WRITE(MV_CESA_CHAN_DESC_OFFSET_REG(chan), descOffsetReg);

		configReg |= (MV_CESA_CFG_WAIT_DMA_MASK | MV_CESA_CFG_ACT_DMA_MASK);

#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
#ifdef CONFIG_OF
		if (mv_cesa_feature == CHAIN) {
#endif /* CONFIG_OF */
			configReg |= MV_CESA_CFG_CHAIN_MODE_MASK;
#ifdef CONFIG_OF
		}
#endif /* CONFIG_OF */
#endif /* MV_CESA_CHAIN_MODE || CONFIG_OF */

		/* Initialize TDMA engine */
		MV_REG_WRITE(MV_CESA_TDMA_CTRL_REG(chan), MV_CESA_TDMA_CTRL_VALUE);
		MV_REG_WRITE(MV_CESA_TDMA_BYTE_COUNT_REG(chan), 0);
		MV_REG_WRITE(MV_CESA_TDMA_CURR_DESC_PTR_REG(chan), 0);

		switch ((MV_U16)(ctrlModel & 0xff00)) {
		case 0x6500: /* Avanta1 */
			if (ctrlRev < 2) {
				/* Parallel mode should be disabled('1') for chip rev. < A0 */
				configReg |= MV_CESA_CFG_ENC_AUTH_PARALLEL_MODE_MASK;
				sha2CmdVal = BIT31;
			}
			break;
		case 0x6600: /* Avanta-LP */
			if (ctrlRev > 2) {
				MV_REG_BIT_SET(MV_CESA_TDMA_CTRL_REG(chan),
						       MV_CESA_TDMA_OUTSTAND_OUT_OF_ORDER_3TRANS_BIT);
				sha2CmdVal = BIT31;
			}
			break;
		case 0x6700: /* A370 */
			if (ctrlModel == 0x6720) {
				MV_REG_BIT_SET(MV_CESA_TDMA_CTRL_REG(chan),
					       MV_CESA_TDMA_OUTSTAND_OUT_OF_ORDER_3TRANS_BIT);
				sha2CmdVal = BIT31;
			} else {
				/* Support maximum of 4 outstanding read transactions */
				MV_REG_BIT_SET(MV_CESA_TDMA_CTRL_REG(chan), MV_CESA_TDMA_OUTSTAND_NEW_MODE_BIT);
			}
			break;
		case 0x6800: /* A38x */
			MV_REG_BIT_SET(MV_CESA_TDMA_CTRL_REG(chan), MV_CESA_TDMA_OUTSTAND_OUT_OF_ORDER_3TRANS_BIT);
			sha2CmdVal = BIT31;
			break;
		case 0x7800: /* AXP */
			if (ctrlRev < 1) { /* Z1 step */
#ifdef AURORA_IO_CACHE_COHERENCY
				/* No support for outstanding read with I/0 cache coherency on AXP/Z1 */
				MV_REG_BIT_RESET(MV_CESA_TDMA_CTRL_REG(chan), MV_CESA_TDMA_OUTSTAND_READ_EN_MASK);
#endif
				/* Parallel mode should be disabled('1') for chip rev. < A0 */
				configReg |= MV_CESA_CFG_ENC_AUTH_PARALLEL_MODE_MASK;
			} else { /*  A0/B0 steps */
				/* Support maximum of 3 outstanding read transactions */
				MV_REG_BIT_SET(MV_CESA_TDMA_CTRL_REG(chan), MV_CESA_TDMA_OUTSTAND_OUT_OF_ORDER_3TRANS_BIT);
			}
			sha2CmdVal = BIT31;
			break;
		default:
			mvOsPrintf("Error, chip revision(%d) no supported\n", halData->ctrlRev);
			break;
		}

#if defined(MV_CESA_INT_COALESCING_SUPPORT) || defined(CONFIG_OF)
		configReg |= MV_CESA_CFG_CHAIN_MODE_MASK;
		/* Enable interrupt coalescing */
#ifdef CONFIG_OF
		if (mv_cesa_feature == INT_COALESCING) {
			MV_REG_WRITE(MV_CESA_INT_COAL_TH_REG(chan),
			    mv_cesa_threshold);
			MV_REG_WRITE(MV_CESA_INT_TIME_TH_REG(chan),
			    mv_cesa_time_threshold);
		}
#else /* CONFIG_OF */
		MV_REG_WRITE(MV_CESA_INT_COAL_TH_REG(chan), MV_CESA_INT_COAL_THRESHOLD);
		MV_REG_WRITE(MV_CESA_INT_TIME_TH_REG(chan), MV_CESA_INT_COAL_TIME_THRESHOLD);
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_COALESCING_SUPPORT || CONFIG_OF */

		/* Set CESA configuration registers */
		MV_REG_WRITE(MV_CESA_CFG_REG(chan), configReg);
	}

	mvCesaDebugStatsClear();
	mvOsMemcpy(&cesaHalData, halData, sizeof(MV_CESA_HAL_DATA));

	return MV_OK;
}

/*******************************************************************************
* mvCesaFinish - Shutdown the CESA driver
*
* DESCRIPTION:
*       This function shutdown the CESA driver and free all allocted resources.
*
* INPUT:    None
*
* RETURN:
*       MV_OK   - Success
*       Other   - Fail
*
*******************************************************************************/
MV_STATUS mvCesaFinish(void)
{
	int req, sid;
	MV_CESA_REQ *pReq;
	MV_U8 chan;

	mvOsPrintf("mvCesaFinish:\n");

#ifdef CONFIG_OF
	for (chan = 0; chan < mv_cesa_channels; chan++) {
#else
	for (chan = 0; chan < MV_CESA_CHANNELS; chan++) {
#endif

		cesaSramVirtPtr[chan] = NULL;

		MV_REG_WRITE(MV_CESA_CFG_REG(chan), 0);
		MV_REG_WRITE(MV_CESA_ISR_CAUSE_REG(chan), 0);
		MV_REG_WRITE(MV_CESA_ISR_MASK_REG(chan), 0);


		/* Free all resources: DMA list, etc. */
		for (req = 0; req < cesaQueueDepth[chan]; req++) {
			pReq = &pCesaReqFirst[chan][req];
			if (pReq->dmaDescBuf.bufVirtPtr != NULL) {
				mvOsIoCachedFree(cesaOsHandle, pReq->dmaDescBuf.bufSize,
					pReq->dmaDescBuf.bufPhysAddr,
					pReq->dmaDescBuf.bufVirtPtr, pReq->dmaDescBuf.memHandle);
			}
			if (pReq->cesaDescBuf.bufVirtPtr != NULL) {
				mvOsIoCachedFree(cesaOsHandle, pReq->cesaDescBuf.bufSize,
					pReq->cesaDescBuf.bufPhysAddr,
					pReq->cesaDescBuf.bufVirtPtr, pReq->cesaDescBuf.memHandle);
			}

			/* Free request queue */
			if (pCesaReqFirst[chan] != NULL) {
				mvOsFree(pCesaReqFirst[chan]);
				pCesaReqFirst[chan] = pCesaReqLast[chan] = NULL;
				pCesaReqEmpty[chan] = pCesaReqProcess[chan] = NULL;
				cesaQueueDepth[chan] = cesaReqResources[chan] = 0;
			}
		}
	}

	/* Free SA database */
	if (pCesaSAD != NULL) {
		for (sid = 0; sid < cesaMaxSA; sid++) {
			/* Free SRAM SA structure */
			mvOsIoCachedFree(cesaOsHandle, pCesaSAD[sid]->sramSABuffSize,
					 pCesaSAD[sid]->sramSAPhysAddr,
					 pCesaSAD[sid]->sramSABuff, pCesaSAD[sid]->memHandle);
			/* Free SA structure */
			mvOsFree(pCesaSAD[sid]);
			pCesaSAD[sid] = NULL;
		}

		cesaMaxSA = 0;
	}

	return MV_OK;
}

/*******************************************************************************
* mvCesaCryptoIvSet - Set IV value for Crypto algorithm working in CBC mode
*
* DESCRIPTION:
*    This function set IV value using by Crypto algorithms in CBC mode.
*   Each channel has its own IV value.
*   This function gets IV value from the caller. If no IV value passed from
*   the caller or only part of IV passed, the function will init the rest part
*   of IV value (or the whole IV) by random value.
*
* INPUT:
*       MV_U8*  pIV     - Pointer to IV value supplied by user. If pIV==NULL
*                       the function will generate random IV value.
*       int     ivSize  - size (in bytes) of IV provided by user. If ivSize is
*                       smaller than maximum IV size, the function will complete
*                       IV by random value.
*
* RETURN:
*       MV_OK   - Success
*       Other   - Fail
*
*******************************************************************************/
MV_STATUS mvCesaCryptoIvSet(MV_U8 chan, MV_U8 *pIV, int ivSize)
{
	MV_U8 *pSramIV;

	pSramIV = cesaSramVirtPtr[chan]->cryptoIV;
	if (ivSize > MV_CESA_MAX_IV_LENGTH) {
		mvOsPrintf("mvCesaCryptoIvSet: ivSize (%d) is too large\n", ivSize);
		ivSize = MV_CESA_MAX_IV_LENGTH;
	}
	if (pIV != NULL) {
		memcpy(pSramIV, pIV, ivSize);
		ivSize = MV_CESA_MAX_IV_LENGTH - ivSize;
		pSramIV += ivSize;
	}

	while (ivSize > 0) {
		int size, mv_random = mvOsRand();

		size = MV_MIN(ivSize, sizeof(mv_random));
		memcpy(pSramIV, (void *)&mv_random, size);

		pSramIV += size;
		ivSize -= size;
	}
/*
    mvOsCacheFlush(cesaOsHandle, cesaSramVirtPtr[chan]->cryptoIV, MV_CESA_MAX_IV_LENGTH);
    mvOsCacheInvalidate(cesaOsHandle, cesaSramVirtPtr[chan]->cryptoIV, MV_CESA_MAX_IV_LENGTH);
*/
	return MV_OK;
}

/*******************************************************************************
* mvCesaSessionOpen - Open new uni-directional crypto session
*
* DESCRIPTION:
*       This function open new session.
*
* INPUT:
*       MV_CESA_OPEN_SESSION *pSession - pointer to new session input parameters
*
* OUTPUT:
*       short           *pSid  - session ID, should be used for all future
*                                   requests over this session.
*
* RETURN:
*       MV_OK           - Session opend successfully.
*       MV_FULL         - All sessions are in use, no free place in
*                       SA database.
*       MV_BAD_PARAM    - One of session input parameters is invalid.
*
*******************************************************************************/
MV_STATUS mvCesaSessionOpen(MV_CESA_OPEN_SESSION *pSession, short *pSid)
{
	short sid;
	MV_U32 config = 0;
	int digestSize;
	MV_BUF_INFO cesaSramSaBuf;

	cesaStats.openedCount++;

	/* Find free entry in SAD */
	for (sid = 0; sid < cesaMaxSA; sid++)
		if (pCesaSAD[sid] == NULL)
			break;

	/* No more sessions left ? */
	if (sid == cesaMaxSA) {
		if (MV_FAIL == mvCesaUpdateSADSize(cesaMaxSA * 2)) {
			mvOsPrintf("mvCesaSessionOpen: SA Database is FULL\n");
			return MV_FULL;
		}
	}

	/* Allocate SA entry */
	pCesaSAD[sid] = mvOsMalloc(sizeof(MV_CESA_SA));
	if (pCesaSAD[sid] == NULL) {
		mvOsPrintf("mvCesaSessionOpen: Can't allocate %d bytes for SA structures\n", sizeof(MV_CESA_SA));
		return MV_FULL;
	}
	memset(pCesaSAD[sid], 0, sizeof(MV_CESA_SA));

	/* Allocate image of sramSA in DRAM */
	cesaSramSaBuf.bufSize = sizeof(MV_CESA_SRAM_SA) + CPU_D_CACHE_LINE_SIZE;

	cesaSramSaBuf.bufVirtPtr = mvOsIoCachedMalloc(cesaOsHandle, cesaSramSaBuf.bufSize,
						      &cesaSramSaBuf.bufPhysAddr, &cesaSramSaBuf.memHandle);

	if (cesaSramSaBuf.bufVirtPtr == NULL) {
		mvOsPrintf("mvCesaSessionOpen: Can't allocate %d bytes for sramSA structures\n", cesaSramSaBuf.bufSize);
		return MV_FULL;
	}
	memset(cesaSramSaBuf.bufVirtPtr, 0, cesaSramSaBuf.bufSize);

	/* Save allocation parameters */
	pCesaSAD[sid]->sramSABuff = cesaSramSaBuf.bufVirtPtr;
	pCesaSAD[sid]->sramSABuffSize = cesaSramSaBuf.bufSize;
	pCesaSAD[sid]->memHandle = cesaSramSaBuf.memHandle;
	pCesaSAD[sid]->pSramSA = (MV_CESA_SRAM_SA *) MV_ALIGN_UP((MV_ULONG) cesaSramSaBuf.bufVirtPtr,
								 CPU_D_CACHE_LINE_SIZE);

	/* Align physical address to the beginning of SRAM SA */
	pCesaSAD[sid]->sramSAPhysAddr = MV_32BIT_LE(mvCesaVirtToPhys(&cesaSramSaBuf, pCesaSAD[sid]->pSramSA));

	/* Check Input parameters for Open session */
	if (pSession->operation >= MV_CESA_MAX_OPERATION) {
		mvOsPrintf("mvCesaSessionOpen: Unexpected operation %d\n", pSession->operation);
		return MV_BAD_PARAM;
	}
	config |= (pSession->operation << MV_CESA_OPERATION_OFFSET);

	if ((pSession->direction != MV_CESA_DIR_ENCODE) && (pSession->direction != MV_CESA_DIR_DECODE)) {
		mvOsPrintf("mvCesaSessionOpen: Unexpected direction %d\n", pSession->direction);
		return MV_BAD_PARAM;
	}
	config |= (pSession->direction << MV_CESA_DIRECTION_BIT);
	/* Clear SA entry */
	/* memset(&pCesaSAD[sid], 0, sizeof(pCesaSAD[sid])); */

	/* Check AUTH parameters and update SA entry */
	if (pSession->operation != MV_CESA_CRYPTO_ONLY) {
		/* For HMAC (MD5/SHA1/SHA2) - Maximum Key size is 64 bytes */
		if ((pSession->macMode == MV_CESA_MAC_HMAC_MD5) || (pSession->macMode == MV_CESA_MAC_HMAC_SHA1) ||
					(pSession->macMode == MV_CESA_MAC_HMAC_SHA2)) {
			if (pSession->macKeyLength > MV_CESA_MAX_MAC_KEY_LENGTH) {
				mvOsPrintf("mvCesaSessionOpen: macKeyLength %d is too large\n", pSession->macKeyLength);
				return MV_BAD_PARAM;
			}
			mvCesaHmacIvGet(pSession->macMode, pSession->macKey, pSession->macKeyLength,
					pCesaSAD[sid]->pSramSA->macInnerIV, pCesaSAD[sid]->pSramSA->macOuterIV);
			pCesaSAD[sid]->macKeyLength = pSession->macKeyLength;
		}
		switch (pSession->macMode) {
		case MV_CESA_MAC_MD5:
		case MV_CESA_MAC_HMAC_MD5:
			digestSize = MV_CESA_MD5_DIGEST_SIZE;
			break;

		case MV_CESA_MAC_SHA1:
		case MV_CESA_MAC_HMAC_SHA1:
			digestSize = MV_CESA_SHA1_DIGEST_SIZE;
			break;

		case MV_CESA_MAC_SHA2:
		case MV_CESA_MAC_HMAC_SHA2:
			digestSize = MV_CESA_SHA2_DIGEST_SIZE;
			break;

		default:
			mvOsPrintf("mvCesaSessionOpen: Unexpected macMode %d\n", pSession->macMode);
			return MV_BAD_PARAM;
		}
		config |= (pSession->macMode << MV_CESA_MAC_MODE_OFFSET);

		/* Supported digest sizes:     */
		/* MD5 - 16 bytes (128 bits),  */
		/* SHA1 - 20 bytes (160 bits), */
		/* SHA2 - 32 bytes (256 bits) or 12 bytes (96 bits) for all */
		if ((pSession->digestSize != digestSize) && (pSession->digestSize != 12)) {
			mvOsPrintf("mvCesaSessionOpen: Unexpected digest size %d\n", pSession->digestSize);
			mvOsPrintf("\t Valid values [bytes]: MD5-16, SHA1-20, SHA2-32, All-12\n");
			return MV_BAD_PARAM;
		}
		pCesaSAD[sid]->digestSize = pSession->digestSize;

		if (pCesaSAD[sid]->digestSize == 12) {
			/* Set MV_CESA_MAC_DIGEST_SIZE_BIT if digest size is 96 bits */
			config |= (MV_CESA_MAC_DIGEST_96B << MV_CESA_MAC_DIGEST_SIZE_BIT);
		}
	}

	/* Check CRYPTO parameters and update SA entry */
	if (pSession->operation != MV_CESA_MAC_ONLY) {
		switch (pSession->cryptoAlgorithm) {
		case MV_CESA_CRYPTO_DES:
			pCesaSAD[sid]->cryptoKeyLength = MV_CESA_DES_KEY_LENGTH;
			pCesaSAD[sid]->cryptoBlockSize = MV_CESA_DES_BLOCK_SIZE;
			break;

		case MV_CESA_CRYPTO_3DES:
			pCesaSAD[sid]->cryptoKeyLength = MV_CESA_3DES_KEY_LENGTH;
			pCesaSAD[sid]->cryptoBlockSize = MV_CESA_DES_BLOCK_SIZE;
			/* Only EDE mode is supported */
			config |= (MV_CESA_CRYPTO_3DES_EDE << MV_CESA_CRYPTO_3DES_MODE_BIT);
			break;

		case MV_CESA_CRYPTO_AES:
			switch (pSession->cryptoKeyLength) {
			case 16:
				pCesaSAD[sid]->cryptoKeyLength = MV_CESA_AES_128_KEY_LENGTH;
				config |= (MV_CESA_CRYPTO_AES_KEY_128 << MV_CESA_CRYPTO_AES_KEY_LEN_OFFSET);
				break;

			case 24:
				pCesaSAD[sid]->cryptoKeyLength = MV_CESA_AES_192_KEY_LENGTH;
				config |= (MV_CESA_CRYPTO_AES_KEY_192 << MV_CESA_CRYPTO_AES_KEY_LEN_OFFSET);
				break;

			case 32:
			default:
				pCesaSAD[sid]->cryptoKeyLength = MV_CESA_AES_256_KEY_LENGTH;
				config |= (MV_CESA_CRYPTO_AES_KEY_256 << MV_CESA_CRYPTO_AES_KEY_LEN_OFFSET);
				break;
			}
			pCesaSAD[sid]->cryptoBlockSize = MV_CESA_AES_BLOCK_SIZE;
			break;

		default:
			mvOsPrintf("mvCesaSessionOpen: Unexpected cryptoAlgorithm %d\n", pSession->cryptoAlgorithm);
			return MV_BAD_PARAM;
		}
		config |= (pSession->cryptoAlgorithm << MV_CESA_CRYPTO_ALG_OFFSET);

		if (pSession->cryptoKeyLength != pCesaSAD[sid]->cryptoKeyLength) {
			mvOsPrintf("cesaSessionOpen: Wrong CryptoKeySize %d != %d\n",
				   pSession->cryptoKeyLength, pCesaSAD[sid]->cryptoKeyLength);
			return MV_BAD_PARAM;
		}

		/* Copy Crypto key */
		if ((pSession->cryptoAlgorithm == MV_CESA_CRYPTO_AES) && (pSession->direction == MV_CESA_DIR_DECODE)) {
			/* Crypto Key for AES decode is computed from original key material */
			/* and depend on cryptoKeyLength (128/192/256 bits) */
			aesMakeKey(pCesaSAD[sid]->pSramSA->cryptoKey, pSession->cryptoKey,
				   pSession->cryptoKeyLength * 8, MV_CESA_AES_BLOCK_SIZE * 8);
		} else {
			/*panic("mvCesaSessionOpen2"); */
			memcpy(pCesaSAD[sid]->pSramSA->cryptoKey, pSession->cryptoKey, pCesaSAD[sid]->cryptoKeyLength);

		}

		switch (pSession->cryptoMode) {
		case MV_CESA_CRYPTO_ECB:
			pCesaSAD[sid]->cryptoIvSize = 0;
			break;

		case MV_CESA_CRYPTO_CBC:
			pCesaSAD[sid]->cryptoIvSize = pCesaSAD[sid]->cryptoBlockSize;
			break;

		case MV_CESA_CRYPTO_CTR:
			/* Supported only for AES algorithm */
			if (pSession->cryptoAlgorithm != MV_CESA_CRYPTO_AES) {
				mvOsPrintf("mvCesaSessionOpen: CRYPTO CTR mode supported for AES only\n");
				return MV_BAD_PARAM;
			}
			pCesaSAD[sid]->cryptoIvSize = 0;
			pCesaSAD[sid]->ctrMode = 1;
			/* Replace to ECB mode for HW */
			pSession->cryptoMode = MV_CESA_CRYPTO_ECB;
			break;

		default:
			mvOsPrintf("mvCesaSessionOpen: Unexpected cryptoMode %d\n", pSession->cryptoMode);
			return MV_BAD_PARAM;
		}

		config |= (pSession->cryptoMode << MV_CESA_CRYPTO_MODE_BIT);
	}
	pCesaSAD[sid]->config = config;

	mvOsCacheFlush(cesaOsHandle, pCesaSAD[sid]->pSramSA, sizeof(MV_CESA_SRAM_SA));
	if (pSid != NULL)
		*pSid = sid;

	return MV_OK;
}

/*******************************************************************************
* mvCesaSessionClose - Close active crypto session
*
* DESCRIPTION:
*       This function closes existing session
*
* INPUT:
*       short sid   - Unique identifier of the session to be closed
*
* RETURN:
*       MV_OK        - Session closed successfully.
*       MV_BAD_PARAM - Session identifier is out of valid range.
*       MV_NOT_FOUND - There is no active session with such ID.
*
*******************************************************************************/
MV_STATUS mvCesaSessionClose(short sid)
{
	MV_U8 chan;

	cesaStats.closedCount++;

	if (sid >= cesaMaxSA) {
		mvOsPrintf("CESA Error: sid (%d) is too big\n", sid);
		return MV_BAD_PARAM;
	}

	if (pCesaSAD[sid] == NULL) {
		mvOsPrintf("CESA Warning: Session (sid=%d) is invalid\n", sid);
		return MV_NOT_FOUND;
	}

#ifdef CONFIG_OF
	for (chan = 0; chan < mv_cesa_channels; chan++) {
#else
	for (chan = 0; chan < MV_CESA_CHANNELS; chan++) {
#endif
		if (cesaLastSid[chan] == sid)
			cesaLastSid[chan] = -1;
	}

	/* Free SA structures */
	mvOsIoCachedFree(cesaOsHandle, pCesaSAD[sid]->sramSABuffSize,
			 pCesaSAD[sid]->sramSAPhysAddr, pCesaSAD[sid]->sramSABuff, pCesaSAD[sid]->memHandle);
	mvOsFree(pCesaSAD[sid]);

	pCesaSAD[sid] = NULL;

	return MV_OK;
}

/*******************************************************************************
* mvCesaAction - Perform crypto operation
*
* DESCRIPTION:
*       This function set new CESA request FIFO queue for further HW processing.
*       The function checks request parameters before set new request to the queue.
*       If one of the CESA channels is ready for processing the request will be
*       passed to HW. When request processing is finished the CESA interrupt will
*       be generated by HW. The caller should call mvCesaReadyGet() function to
*       complete request processing and get result.
*
* INPUT:
* 	MV_U8 chan		- channel ID.
*       MV_CESA_COMMAND *pCmd   - pointer to new CESA request.
*                               It includes pointers to Source and Destination
*                               buffers, session identifier get from
*                               mvCesaSessionOpen() function, pointer to caller
*                               private data and all needed crypto parameters.
*
* RETURN:
*       MV_OK             - request successfully added to request queue
*                         and will be processed.
*       MV_NO_MORE        - request successfully added to request queue and will
*                         be processed, but request queue became Full and next
*                         request will not be accepted.
*       MV_NO_RESOURCE    - request queue is FULL and the request can not
*                         be processed.
*       MV_OUT_OF_CPU_MEM - memory allocation needed for request processing is
*                         failed. Request can not be processed.
*       MV_NOT_ALLOWED    - This mixed request (CRYPTO+MAC) can not be processed
*                         as one request and should be splitted for two requests:
*                         CRYPTO_ONLY and MAC_ONLY.
*       MV_BAD_PARAM      - One of the request parameters is out of valid range.
*                         The request can not be processed.
*
*******************************************************************************/
MV_STATUS mvCesaAction(MV_U8 chan, MV_CESA_COMMAND *pCmd)
{
	MV_STATUS status;
	MV_CESA_REQ *pReq = pCesaReqEmpty[chan];
	int sid = pCmd->sessionId;
	MV_CESA_SA *pSA = pCesaSAD[sid];
#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
	MV_CESA_REQ *pFromReq;
	MV_CESA_REQ *pToReq;
#endif /* MV_CESA_CHAIN_MODE || CONFIG_OF */
	cesaStats.reqCount++;

	/* Check that the request queue is not FULL */
	if (cesaReqResources[chan] == 0)
		return MV_NO_RESOURCE;

	if ((sid >= cesaMaxSA) || (pSA == NULL)) {
		mvOsPrintf("CESA Action Error: Session sid=%d is INVALID\n", sid);
		return MV_BAD_PARAM;
	}
	pSA->count++;

	if (pSA->ctrMode) {
		/* AES in CTR mode can't be mixed with Authentication */
		if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) {
			mvOsPrintf("mvCesaAction : CRYPTO CTR mode can't be mixed with AUTH\n");
			return MV_NOT_ALLOWED;
		}
		/* All other request parameters should not be checked because key stream */
		/* (not user data) processed by AES HW engine */
		pReq->pOrgCmd = pCmd;
		/* Allocate temporary pCmd structure for Key stream */
		pCmd = mvCesaCtrModeInit();
		if (pCmd == NULL)
			return MV_OUT_OF_CPU_MEM;

		/* Prepare Key stream */
		mvCesaCtrModePrepare(pCmd, pReq->pOrgCmd);
		pReq->fixOffset = 0;
	} else {
		/* Check request parameters and calculae fixOffset */
		status = mvCesaParamCheck(pSA, pCmd, &pReq->fixOffset);
		if (status != MV_OK)
			return status;
	}
	pReq->pCmd = pCmd;

	/* Check if the packet need fragmentation */
	if (pCmd->pSrc->mbufSize <= sizeof(cesaSramVirtPtr[chan]->buf)) {
		/* request size is smaller than single buffer size */
		pReq->fragMode = MV_CESA_FRAG_NONE;

		/* Prepare NOT fragmented packets */
		status = mvCesaReqProcess(chan, pReq);
		if (status != MV_OK)
			mvOsPrintf("CesaReady: ReqProcess error: pReq=%p, status=0x%x\n", pReq, status);
#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
#ifdef CONFIG_OF
		if (mv_cesa_feature == CHAIN) {
#endif /* CONFIG_OF */
			pReq->frags.numFrag = 1;
#ifdef CONFIG_OF
		}
#endif /* CONFIG_OF */
#endif /* MV_CESA_CHAIN_MODE || CONFIG_OF */
	} else {
		MV_U8 frag = 0;

		/* request size is larger than buffer size - needs fragmentation */

		/* Check restrictions for processing fragmented packets */
		status = mvCesaFragParamCheck(chan, pSA, pCmd);
		if (status != MV_OK)
			return status;

		pReq->fragMode = MV_CESA_FRAG_FIRST;
		pReq->frags.nextFrag = 0;

		/* Prepare Process Fragmented packets */
		while (pReq->fragMode != MV_CESA_FRAG_LAST) {
			if (frag >= MV_CESA_MAX_REQ_FRAGS) {
				mvOsPrintf("mvCesaAction Error: Too large request frag=%d\n", frag);
				return MV_OUT_OF_CPU_MEM;
			}
			status = mvCesaFragReqProcess(chan, pReq, frag);
			if (status == MV_OK && frag) {
				pReq->dma[frag - 1].pDmaLast->phyNextDescPtr =
					MV_32BIT_LE(mvCesaVirtToPhys(&pReq->dmaDescBuf,
						    pReq->dma[frag].pDmaFirst));
				mvOsCacheFlush(cesaOsHandle, pReq->dma[frag - 1].pDmaLast,
					       sizeof(MV_DMA_DESC));
			}
			frag++;
		}
		pReq->frags.numFrag = frag;

#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
#ifdef CONFIG_OF
		if (mv_cesa_feature == CHAIN) {
#endif /* CONFIG_OF */
			if (chainReqNum[chan]) {
				chainReqNum[chan] += pReq->frags.numFrag;
				if (chainReqNum[chan] >= MAX_CESA_CHAIN_LENGTH)
					chainReqNum[chan] =
					    MAX_CESA_CHAIN_LENGTH;
		}
#ifdef CONFIG_OF
		}
#endif /* CONFIG_OF */
#endif /* MV_CESA_CHAIN_MODE || CONFIG_OF*/
	}

	pReq->state = MV_CESA_PENDING;

	pCesaReqEmpty[chan] = MV_CESA_REQ_NEXT_PTR(chan, pCesaReqEmpty[chan]);
	cesaReqResources[chan] -= 1;

/* #ifdef CESA_DEBUG */
	if ((cesaQueueDepth[chan] - cesaReqResources[chan]) > cesaStats.maxReqCount)
		cesaStats.maxReqCount = (cesaQueueDepth[chan] - cesaReqResources[chan]);
/* #endif CESA_DEBUG */

	cesaLastSid[chan] = sid;

#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == CHAIN) {
#endif /* CONFIG_OF */

		/* Are we within chain bounderies and follows the first request ? */
		if ((chainReqNum[chan] > 0) && (chainReqNum[chan] < MAX_CESA_CHAIN_LENGTH)) {
			if (chainIndex[chan]) {
				pFromReq = MV_CESA_REQ_PREV_PTR(chan, pReq);
				pToReq = pReq;
				pReq->state = MV_CESA_CHAIN;

				/* assume concatenating is possible */
				pFromReq->dma[pFromReq->frags.numFrag - 1].pDmaLast->phyNextDescPtr =
				    MV_32BIT_LE(mvCesaVirtToPhys(&pToReq->dmaDescBuf, pToReq->dma[0].pDmaFirst));
				mvOsCacheFlush(cesaOsHandle, pFromReq->dma[pFromReq->frags.numFrag - 1].pDmaLast,
				    sizeof(MV_DMA_DESC));


				/* align active & next pointers */
				if (pNextActiveChain[chan]->state != MV_CESA_PENDING)
					pEndCurrChain[chan] = pNextActiveChain[chan] =
					    MV_CESA_REQ_NEXT_PTR(chan, pReq);
			} else {	/* we have only one chain, start new one */
				chainReqNum[chan] = 0;
				chainIndex[chan]++;
				/* align active & next pointers  */
				if (pNextActiveChain[chan]->state != MV_CESA_PENDING)
					pEndCurrChain[chan] = pNextActiveChain[chan] = pReq;
			}
		} else {
			/* In case we concatenate full chain */
			if (chainReqNum[chan] == MAX_CESA_CHAIN_LENGTH) {
				chainIndex[chan]++;
				if (pNextActiveChain[chan]->state != MV_CESA_PENDING)
					pEndCurrChain[chan] = pNextActiveChain[chan] = pReq;
				chainReqNum[chan] = 0;
			}

			pReq = pCesaReqProcess[chan];
			if (pReq->state == MV_CESA_PENDING) {
				pNextActiveChain[chan] = pReq;
				pEndCurrChain[chan] = MV_CESA_REQ_NEXT_PTR(chan, pReq);
				/* Start Process new request */
				mvCesaReqProcessStart(chan, pReq);
			}
		}

		chainReqNum[chan]++;

		if ((chainIndex[chan] < MAX_CESA_CHAIN_LENGTH) && (chainReqNum[chan] > cesaStats.maxChainUsage))
			cesaStats.maxChainUsage = chainReqNum[chan];
#ifdef CONFIG_OF
	}
#endif /* CONFIG_OF */
#endif /* MV_CESA_CHAIN_MODE) || CONFIG_OF */

#if defined(MV_CESA_INT_COALESCING_SUPPORT) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == INT_COALESCING) {
#endif /* CONFIG_OF */

		/* Check if processing of previous packet was completed */
		if (!(MV_REG_READ(MV_CESA_STATUS_REG(chan)) & MV_CESA_STATUS_ACTIVE_MASK)) {
			if (pCesaReqStartNext[chan]->state == MV_CESA_PENDING) {
				mvCesaReqProcessStart(chan, pCesaReqStartNext[chan]);
				pCesaReqProcessCurr[chan] = pCesaReqStartNext[chan];
				pCesaReqStartNext[chan] = MV_CESA_REQ_NEXT_PTR(chan, pCesaReqStartNext[chan]);
			}
		}
#ifdef CONFIG_OF
	}
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_COALESCING_SUPPORT || CONFIG_OF */

#if defined(MV_CESA_INT_PER_PACKET) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == INT_PER_PACKET) {
#endif /* CONFIG_OF */

		/* Check status of CESA channels and process requests if possible */
		pReq = pCesaReqProcess[chan];
		if (pReq->state == MV_CESA_PENDING) {
			/* Start Process new request */
			mvCesaReqProcessStart(chan, pReq);
		}
#ifdef CONFIG_OF
	}
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_PER_PACKET || CONFIG_OF */

	/* If request queue became FULL - return MV_NO_MORE */
	if (cesaReqResources[chan] == 0)
		return MV_NO_MORE;

	return MV_OK;

}

/*******************************************************************************
* mvCesaReadyGet - Get crypto request that processing is finished
*
* DESCRIPTION:
*       This function complete request processing and return ready request to
*       caller. To don't miss interrupts the caller must call this function
*       while MV_OK or MV_TERMINATE values returned.
*
* INPUT:
*   MV_U32          chanMap  - map of CESA channels finished thier job
*                              accordingly with CESA Cause register.
*   MV_CESA_RESULT* pResult  - pointer to structure contains information
*                            about ready request. It includes pointer to
*                            user private structure "pReqPrv", session identifier
*                            for this request "sessionId" and return code.
*                            Return code set to MV_FAIL if calculated digest value
*                            on decode direction is different than digest value
*                            in the packet.
*
* RETURN:
*       MV_OK           - Success, ready request is returned.
*       MV_NOT_READY    - Next request is not ready yet. New interrupt will
*                       be generated for futher request processing.
*       MV_EMPTY        - There is no more request for processing.
*       MV_BUSY         - Fragmented request is not ready yet.
*       MV_TERMINATE    - Call this function once more to complete processing
*                       of fragmented request.
*
*******************************************************************************/
MV_STATUS mvCesaReadyGet(MV_U8 chan, MV_CESA_RESULT *pResult)
{
	MV_STATUS status, readyStatus = MV_NOT_READY;
	MV_U32 statusReg;
	MV_CESA_REQ *pReq;
	MV_CESA_SA *pSA;

#if defined(MV_CESA_CHAIN_MODE) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == CHAIN) {
#endif /* CONFIG_OF */

		if (isFirstReq[chan] == MV_TRUE) {

			if (chainIndex[chan] == 0)
				chainReqNum[chan] = 0;

			isFirstReq[chan] = MV_FALSE;

			if (pNextActiveChain[chan]->state == MV_CESA_PENDING) {

				/* Start request Process */
				mvCesaReqProcessStart(chan, pNextActiveChain[chan]);
				pEndCurrChain[chan] = pNextActiveChain[chan];
				if (chainIndex[chan] > 0)
					chainIndex[chan]--;
				/* Update pNextActiveChain to next chain head */
				while (pNextActiveChain[chan]->state == MV_CESA_CHAIN)
					pNextActiveChain[chan] = MV_CESA_REQ_NEXT_PTR(chan, pNextActiveChain[chan]);
			}

		}

		/* Check if there are more processed requests - can we remove pEndCurrChain ??? */
		if (pCesaReqProcess[chan] == pEndCurrChain[chan]) {

			isFirstReq[chan] = MV_TRUE;
			pEndCurrChain[chan] = pNextActiveChain[chan];
			return MV_EMPTY;
		}
#ifdef CONFIG_OF
	} else {
		if (pCesaReqProcess[chan]->state != MV_CESA_PROCESS)
			return MV_EMPTY;
	}
#endif
#else
	if (pCesaReqProcess[chan]->state != MV_CESA_PROCESS) {
		return MV_EMPTY;
	}
#endif /* MV_CESA_CHAIN_MODE */

#if defined(MV_CESA_INT_COALESCING_SUPPORT) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == INT_COALESCING) {
#endif /* CONFIG_OF */
		statusReg = MV_REG_READ(MV_CESA_STATUS_REG(chan));
		if ((statusReg & MV_CESA_STATUS_ACTIVE_MASK) &&
			(pCesaReqProcessCurr[chan] == pCesaReqProcess[chan])) {
			cesaStats.notReadyCount++;
			return MV_NOT_READY;
		}
#ifdef CONFIG_OF
	}
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_COALESCING_SUPPORT || CONFIG_OF */

	cesaStats.readyCount++;

	pReq = pCesaReqProcess[chan];
	pSA = pCesaSAD[pReq->pCmd->sessionId];

	pResult->retCode = MV_OK;
	if (pReq->fragMode != MV_CESA_FRAG_NONE) {
		MV_U8 *pNewDigest;
		int frag;

		pReq->frags.nextFrag = 1;
		while (pReq->frags.nextFrag <= pReq->frags.numFrag) {
			frag = (pReq->frags.nextFrag - 1);

			/* Restore DMA descriptor list */
			pReq->dma[frag].pDmaLast->phyNextDescPtr =
			    MV_32BIT_LE(mvCesaVirtToPhys(&pReq->dmaDescBuf, &pReq->dma[frag].pDmaLast[1]));
			pReq->dma[frag].pDmaLast = NULL;

			/* Special processing for finished fragmented request */
			if (pReq->frags.nextFrag >= pReq->frags.numFrag) {
				mvCesaMbufCacheUnmap(pReq->pCmd->pDst, 0, pReq->pCmd->pDst->mbufSize);

				/* Fragmented packet is ready */
				if ((pSA->config & MV_CESA_OPERATION_MASK) !=
				    (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) {
					int macDataSize = pReq->pCmd->macLength - pReq->frags.macSize;

					if (macDataSize != 0) {
						/* Calculate all other blocks by SW */
						mvCesaFragAuthComplete(chan, pReq, pSA, macDataSize);
					}

					/* Copy new digest from SRAM to the Destination buffer */
					pNewDigest = cesaSramVirtPtr[chan]->buf + pReq->frags.newDigestOffset;
					status = mvCesaCopyToMbuf(pNewDigest, pReq->pCmd->pDst,
								  pReq->pCmd->digestOffset, pSA->digestSize);

					/* For decryption: Compare new digest value with original one */
					if ((pSA->config & MV_CESA_DIRECTION_MASK) ==
					    (MV_CESA_DIR_DECODE << MV_CESA_DIRECTION_BIT)) {
						if (memcmp(pNewDigest, pReq->frags.orgDigest, pSA->digestSize) != 0) {
/*
						mvOsPrintf("Digest error: chan=%d, newDigest=%p, orgDigest=%p, status = 0x%x\n",
							chan, pNewDigest, pReq->frags.orgDigest, MV_REG_READ(MV_CESA_STATUS_REG));
*/
							/* Signiture verification is failed */
							pResult->retCode = MV_FAIL;
						}
					}
				}
				readyStatus = MV_OK;
			}
			pReq->frags.nextFrag++;
		}
	} else {
		mvCesaMbufCacheUnmap(pReq->pCmd->pDst, 0, pReq->pCmd->pDst->mbufSize);

		/* Restore DMA descriptor list */
		pReq->dma[0].pDmaLast->phyNextDescPtr =
		    MV_32BIT_LE(mvCesaVirtToPhys(&pReq->dmaDescBuf, &pReq->dma[0].pDmaLast[1]));
		pReq->dma[0].pDmaLast = NULL;
		if (((pSA->config & MV_CESA_OPERATION_MASK) !=
		     (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) &&
		    ((pSA->config & MV_CESA_DIRECTION_MASK) == (MV_CESA_DIR_DECODE << MV_CESA_DIRECTION_BIT))) {
			/* For AUTH on decode : Check Digest result in Status register */
			statusReg = MV_REG_READ(MV_CESA_STATUS_REG(chan));
			if (statusReg & MV_CESA_STATUS_DIGEST_ERR_MASK) {
/*
				mvOsPrintf("Digest error: chan=%d, status = 0x%x\n",
						chan, statusReg);
*/
				/* Signiture verification is failed */
				pResult->retCode = MV_FAIL;
			}
		}
		readyStatus = MV_OK;
	}

	if (readyStatus == MV_OK) {
		/* If Request is ready - Prepare pResult structure */
		pResult->pReqPrv = pReq->pCmd->pReqPrv;
		pResult->sessionId = pReq->pCmd->sessionId;
		pResult->mbufSize = pReq->pCmd->pSrc->mbufSize;
		pResult->reqId = pReq->pCmd->reqId;
		pReq->state = MV_CESA_IDLE;
		pCesaReqProcess[chan] = MV_CESA_REQ_NEXT_PTR(chan, pCesaReqProcess[chan]);
		cesaReqResources[chan]++;

		if (pSA->ctrMode) {
			/* For AES CTR mode - complete processing and free allocated resources */
			mvCesaCtrModeComplete(pReq->pOrgCmd, pReq->pCmd);
			mvCesaCtrModeFinish(pReq->pCmd);
			pReq->pOrgCmd = NULL;
		}
	}

#if defined(MV_CESA_INT_PER_PACKET) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == INT_PER_PACKET) {
#endif /* CONFIG_OF */

		if (pCesaReqProcess[chan]->state == MV_CESA_PENDING)
			mvCesaReqProcessStart(chan, pCesaReqProcess[chan]);
#ifdef CONFIG_OF
	}
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_PER_PACKET || CONFIG_OF */

#if defined(MV_CESA_INT_COALESCING_SUPPORT) || defined(CONFIG_OF)
#ifdef CONFIG_OF
	if (mv_cesa_feature == INT_COALESCING) {
#endif /* CONFIG_OF */
		statusReg = MV_REG_READ(MV_CESA_STATUS_REG(chan));
		if (!(statusReg & MV_CESA_STATUS_ACTIVE_MASK)) {
			if (pCesaReqStartNext[chan]->state == MV_CESA_PENDING) {
				mvCesaReqProcessStart(chan, pCesaReqStartNext[chan]);
				pCesaReqProcessCurr[chan] = pCesaReqStartNext[chan];
				pCesaReqStartNext[chan] = MV_CESA_REQ_NEXT_PTR(chan, pCesaReqStartNext[chan]);
			}
		}
#ifdef CONFIG_OF
	}
#endif /* CONFIG_OF */
#endif /* MV_CESA_INT_COALESCING_SUPPORT || CONFIG_OF */
	return readyStatus;
}

/***************** Functions to work with CESA_MBUF structure ******************/

/*******************************************************************************
* mvCesaMbufOffset - Locate offset in the Mbuf structure
*
* DESCRIPTION:
*       This function locates offset inside Multi-Bufeer structure.
*       It get fragment number and place in the fragment where the offset
*       is located.
*
*
* INPUT:
*   MV_CESA_MBUF* pMbuf  - Pointer to multi-buffer structure
*   int           offset - Offset from the beginning of the data presented by
*                        the Mbuf structure.
*
* OUTPUT:
*   int*        pBufOffset  - Offset from the beginning of the fragment where
*                           the offset is located.
*
* RETURN:
*       int - Number of fragment, where the offset is located\
*
*******************************************************************************/
int mvCesaMbufOffset(MV_CESA_MBUF *pMbuf, int offset, int *pBufOffset)
{
	int frag = 0;

	while (offset > 0) {
		if (frag >= pMbuf->numFrags) {
			mvOsPrintf("mvCesaMbufOffset: Error: frag (%d) > numFrags (%d)\n", frag, pMbuf->numFrags);
			return MV_INVALID;
		}
		if (offset < pMbuf->pFrags[frag].bufSize)
			break;

		offset -= pMbuf->pFrags[frag].bufSize;
		frag++;
	}
	if (pBufOffset != NULL)
		*pBufOffset = offset;

	return frag;
}

/*******************************************************************************
* mvCesaCopyFromMbuf - Copy data from the Mbuf structure to continuous buffer
*
* DESCRIPTION:
*
*
* INPUT:
*   MV_U8*          pDstBuf  - Pointer to continuous buffer, where data is
*                              copied to.
*   MV_CESA_MBUF*   pSrcMbuf - Pointer to multi-buffer structure where data is
*                              copied from.
*   int             offset   - Offset in the Mbuf structure where located first
*                            byte of data should be copied.
*   int             size     - Size of data should be copied
*
* RETURN:
*       MV_OK           - Success, all data is copied successfully.
*       MV_OUT_OF_RANGE - Failed, offset is out of Multi-buffer data range.
*                         No data is copied.
*       MV_EMPTY        - Multi-buffer structure has not enough data to copy
*                       Data from the offset to end of Mbuf data is copied.
*
*******************************************************************************/
MV_STATUS mvCesaCopyFromMbuf(MV_U8 *pDstBuf, MV_CESA_MBUF *pSrcMbuf, int offset, int size)
{
	int frag, fragOffset, bufSize;
	MV_U8 *pBuf;

	if (size == 0)
		return MV_OK;

	frag = mvCesaMbufOffset(pSrcMbuf, offset, &fragOffset);
	if (frag == MV_INVALID) {
		mvOsPrintf("CESA Mbuf Error: offset (%d) out of range\n", offset);
		return MV_OUT_OF_RANGE;
	}

	bufSize = pSrcMbuf->pFrags[frag].bufSize - fragOffset;
	pBuf = pSrcMbuf->pFrags[frag].bufVirtPtr + fragOffset;
	while (MV_TRUE) {
		if (size <= bufSize) {
			memcpy(pDstBuf, pBuf, size);
			return MV_OK;
		}
		memcpy(pDstBuf, pBuf, bufSize);
		size -= bufSize;
		frag++;
		pDstBuf += bufSize;
		if (frag >= pSrcMbuf->numFrags)
			break;

		bufSize = pSrcMbuf->pFrags[frag].bufSize;
		pBuf = pSrcMbuf->pFrags[frag].bufVirtPtr;
	}
	mvOsPrintf("mvCesaCopyFromMbuf: Mbuf is EMPTY - %d bytes isn't copied\n", size);
	return MV_EMPTY;
}

/*******************************************************************************
* mvCesaCopyToMbuf - Copy data from continuous buffer to the Mbuf structure
*
* DESCRIPTION:
*
*
* INPUT:
*   MV_U8*          pSrcBuf  - Pointer to continuous buffer, where data is
*                              copied from.
*   MV_CESA_MBUF*   pDstMbuf - Pointer to multi-buffer structure where data is
*                              copied to.
*   int             offset   - Offset in the Mbuf structure where located first
*                            byte of data should be copied.
*   int             size     - Size of data should be copied
*
* RETURN:
*       MV_OK           - Success, all data is copied successfully.
*       MV_OUT_OF_RANGE - Failed, offset is out of Multi-buffer data range.
*                         No data is copied.
*       MV_FULL         - Multi-buffer structure has not enough place to copy
*                       all data. Data from the offset to end of Mbuf data
*                       is copied.
*
*******************************************************************************/
MV_STATUS mvCesaCopyToMbuf(MV_U8 *pSrcBuf, MV_CESA_MBUF *pDstMbuf, int offset, int size)
{
	int frag, fragOffset, bufSize;
	MV_U8 *pBuf;

	if (size == 0)
		return MV_OK;

	frag = mvCesaMbufOffset(pDstMbuf, offset, &fragOffset);
	if (frag == MV_INVALID) {
		mvOsPrintf("CESA Mbuf Error: offset (%d) out of range\n", offset);
		return MV_OUT_OF_RANGE;
	}

	bufSize = pDstMbuf->pFrags[frag].bufSize - fragOffset;
	pBuf = pDstMbuf->pFrags[frag].bufVirtPtr + fragOffset;
	while (MV_TRUE) {
		if (size <= bufSize) {
			memcpy(pBuf, pSrcBuf, size);
			return MV_OK;
		}
		memcpy(pBuf, pSrcBuf, bufSize);
		size -= bufSize;
		frag++;
		pSrcBuf += bufSize;
		if (frag >= pDstMbuf->numFrags)
			break;

		bufSize = pDstMbuf->pFrags[frag].bufSize;
		pBuf = pDstMbuf->pFrags[frag].bufVirtPtr;
	}
	mvOsPrintf("mvCesaCopyToMbuf: Mbuf is FULL - %d bytes isn't copied\n", size);
	return MV_FULL;
}

/*******************************************************************************
* mvCesaMbufCopy - Copy data from one Mbuf structure to the other Mbuf structure
*
* DESCRIPTION:
*
*
* INPUT:
*
*   MV_CESA_MBUF*   pDstMbuf - Pointer to multi-buffer structure where data is
*                              copied to.
*   int      dstMbufOffset   - Offset in the dstMbuf structure where first byte
*                            of data should be copied to.
*   MV_CESA_MBUF*   pSrcMbuf - Pointer to multi-buffer structure where data is
*                              copied from.
*   int      srcMbufOffset   - Offset in the srcMbuf structure where first byte
*                            of data should be copied from.
*   int             size     - Size of data should be copied
*
* RETURN:
*       MV_OK           - Success, all data is copied successfully.
*       MV_OUT_OF_RANGE - Failed, srcMbufOffset or dstMbufOffset is out of
*                       srcMbuf or dstMbuf structure correspondently.
*                       No data is copied.
*       MV_BAD_SIZE     - srcMbuf or dstMbuf structure is too small to copy
*                       all data. Partial data is copied
*
*******************************************************************************/
MV_STATUS mvCesaMbufCopy(MV_CESA_MBUF *pMbufDst, int dstMbufOffset,
			 MV_CESA_MBUF *pMbufSrc, int srcMbufOffset, int size)
{
	int srcFrag, dstFrag, srcSize, dstSize, srcOffset, dstOffset;
	int copySize;
	MV_U8 *pSrc, *pDst;

	if (size == 0)
		return MV_OK;

	srcFrag = mvCesaMbufOffset(pMbufSrc, srcMbufOffset, &srcOffset);
	if (srcFrag == MV_INVALID) {
		mvOsPrintf("CESA srcMbuf Error: offset (%d) out of range\n", srcMbufOffset);
		return MV_OUT_OF_RANGE;
	}
	pSrc = pMbufSrc->pFrags[srcFrag].bufVirtPtr + srcOffset;
	srcSize = pMbufSrc->pFrags[srcFrag].bufSize - srcOffset;

	dstFrag = mvCesaMbufOffset(pMbufDst, dstMbufOffset, &dstOffset);
	if (dstFrag == MV_INVALID) {
		mvOsPrintf("CESA dstMbuf Error: offset (%d) out of range\n", dstMbufOffset);
		return MV_OUT_OF_RANGE;
	}
	pDst = pMbufDst->pFrags[dstFrag].bufVirtPtr + dstOffset;
	dstSize = pMbufDst->pFrags[dstFrag].bufSize - dstOffset;

	while (size > 0) {
		copySize = MV_MIN(srcSize, dstSize);
		if (size <= copySize) {
			memcpy(pDst, pSrc, size);
			return MV_OK;
		}
		memcpy(pDst, pSrc, copySize);
		size -= copySize;
		srcSize -= copySize;
		dstSize -= copySize;

		if (srcSize == 0) {
			srcFrag++;
			if (srcFrag >= pMbufSrc->numFrags)
				break;

			pSrc = pMbufSrc->pFrags[srcFrag].bufVirtPtr;
			srcSize = pMbufSrc->pFrags[srcFrag].bufSize;
		}

		if (dstSize == 0) {
			dstFrag++;
			if (dstFrag >= pMbufDst->numFrags)
				break;

			pDst = pMbufDst->pFrags[dstFrag].bufVirtPtr;
			dstSize = pMbufDst->pFrags[dstFrag].bufSize;
		}
	}
	mvOsPrintf("mvCesaMbufCopy: BAD size - %d bytes isn't copied\n", size);

	return MV_BAD_SIZE;
}

MV_STATUS mvCesaUpdateSADSize(MV_U32 size)
{
	MV_CESA_SA **pNewCesaSAD = NULL;

	/*mvOsPrintf("mvCesaUpdateSADSize: Increasing SA Database to %d sessions\n",size); */

	/* Allocate new buffer to hold larger SAD */
	pNewCesaSAD = mvOsMalloc(sizeof(MV_CESA_SA *) * size);
	if (pNewCesaSAD == NULL) {
		mvOsPrintf("mvCesaUpdateSADSize: Can't allocate %d bytes for new SAD buffer\n", size);
		return MV_FAIL;
	}
	memset(pNewCesaSAD, 0, (sizeof(MV_CESA_SA *) * size));
	mvOsMemcpy(pNewCesaSAD, pCesaSAD, (sizeof(MV_CESA_SA *) * cesaMaxSA));
	mvOsFree(pCesaSAD);
	pCesaSAD = pNewCesaSAD;
	cesaMaxSA = size;

	return MV_OK;
}

static MV_STATUS mvCesaMbufCacheUnmap(MV_CESA_MBUF *pMbuf, int offset, int size)
{
	int frag, fragOffset, bufSize;
	MV_U8 *pBuf;

	if (size == 0)
		return MV_OK;

	frag = mvCesaMbufOffset(pMbuf, offset, &fragOffset);
	if (frag == MV_INVALID) {
		mvOsPrintf("CESA Mbuf Error: offset (%d) out of range\n", offset);
		return MV_OUT_OF_RANGE;
	}

	bufSize = pMbuf->pFrags[frag].bufSize - fragOffset;
	pBuf = pMbuf->pFrags[frag].bufVirtPtr + fragOffset;
	while (MV_TRUE) {
		if (size <= bufSize) {
			mvOsCacheUnmap(cesaOsHandle, mvOsIoVirtToPhy(cesaOsHandle, pBuf), size);
			return MV_OK;
		}

		mvOsCacheUnmap(cesaOsHandle, mvOsIoVirtToPhy(cesaOsHandle, pBuf), bufSize);
		size -= bufSize;
		frag++;
		if (frag >= pMbuf->numFrags)
			break;

		bufSize = pMbuf->pFrags[frag].bufSize;
		pBuf = pMbuf->pFrags[frag].bufVirtPtr;
	}
	mvOsPrintf("%s: Mbuf is FULL - %d bytes isn't Unmapped\n", __func__, size);
	return MV_FULL;
}

/*************************************** Local Functions ******************************/

/*******************************************************************************
* mvCesaFragReqProcess - Process fragmented request
*
* DESCRIPTION:
*       This function processes a fragment of fragmented request (First, Middle or Last)
*
*
* INPUT:
*       MV_CESA_REQ* pReq   - Pointer to the request in the request queue.
*
* RETURN:
*       MV_OK        - The fragment is successfully passed to HW for processing.
*       MV_TERMINATE - Means, that HW finished its work on this packet and no more
*                    interrupts will be generated for this request.
*                    Function mvCesaReadyGet() must be called to complete request
*                    processing and get request result.
*
*******************************************************************************/
static MV_STATUS mvCesaFragReqProcess(MV_U8 chan, MV_CESA_REQ *pReq, MV_U8 frag)
{
	int i, copySize, cryptoDataSize, macDataSize, sid;
	int cryptoIvOffset, digestOffset;
	MV_U32 config;
	MV_CESA_COMMAND *pCmd = pReq->pCmd;
	MV_CESA_SA *pSA;
	MV_CESA_MBUF *pMbuf;
	MV_DMA_DESC *pDmaDesc = pReq->dma[frag].pDmaFirst;
	MV_U8 *pSramBuf = cesaSramVirtPtr[chan]->buf;
	int macTotalLen = 0;
	int fixOffset, cryptoOffset, macOffset;

	cesaStats.fragCount++;

	sid = pReq->pCmd->sessionId;

	pSA = pCesaSAD[sid];

	cryptoIvOffset = digestOffset = 0;
	i = macDataSize = 0;
	cryptoDataSize = 0;

	/* First fragment processing */
	if (pReq->fragMode == MV_CESA_FRAG_FIRST) {
		/* pReq->frags monitors processing of fragmented request between fragments */
		pReq->frags.bufOffset = 0;
		pReq->frags.cryptoSize = 0;
		pReq->frags.macSize = 0;

		config = pSA->config | (MV_CESA_FRAG_FIRST << MV_CESA_FRAG_MODE_OFFSET);

		/* fixOffset can be not equal to zero only for FIRST fragment */
		fixOffset = pReq->fixOffset;
		/* For FIRST fragment crypto and mac offsets are taken from pCmd */
		cryptoOffset = pCmd->cryptoOffset;
		macOffset = pCmd->macOffset;

		copySize = sizeof(cesaSramVirtPtr[chan]->buf) - pReq->fixOffset;

		/* Find fragment size: Must meet all requirements for CRYPTO and MAC
		 * cryptoDataSize   - size of data will be encrypted/decrypted in this fragment
		 * macDataSize      - size of data will be signed/verified in this fragment
		 * copySize         - size of data will be copied from srcMbuf to SRAM and
		 *                  back to dstMbuf for this fragment
		 */
		mvCesaFragSizeFind(pSA, pReq, cryptoOffset, macOffset, &copySize, &cryptoDataSize, &macDataSize);

		if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET)) {
			/* CryptoIV special processing */
			if ((pSA->config & MV_CESA_CRYPTO_MODE_MASK) == (MV_CESA_CRYPTO_CBC << MV_CESA_CRYPTO_MODE_BIT)) {
				/* In CBC mode for encode direction when IV from user */
				if ((pCmd->ivFromUser) &&
				    ((pSA->config & MV_CESA_DIRECTION_MASK) ==
				     (MV_CESA_DIR_ENCODE << MV_CESA_DIRECTION_BIT))) {

					/* For Crypto Encode in CBC mode HW always takes IV from SRAM IVPointer,
					 * (not from IVBufPointer). So when ivFromUser==1, we should copy IV from user place
					 * in the buffer to SRAM IVPointer
					 */
					i += mvCesaDmaCopyPrepare(chan, pCmd->pSrc, cesaSramVirtPtr[chan]->cryptoIV,
									&pDmaDesc[i], MV_FALSE, pCmd->ivOffset,
									pSA->cryptoIvSize, pCmd->skipFlush);
				}

				/* Special processing when IV is not located in the first fragment */
				if (pCmd->ivOffset > (copySize - pSA->cryptoIvSize)) {
					/* Prepare dummy place for cryptoIV in SRAM */
					cryptoIvOffset = cesaSramVirtPtr[chan]->tempCryptoIV - mvCesaSramAddrGet(chan);

					/* For Decryption: Copy IV value from pCmd->ivOffset to Special SRAM place */
					if ((pSA->config & MV_CESA_DIRECTION_MASK) ==
					    (MV_CESA_DIR_DECODE << MV_CESA_DIRECTION_BIT)) {
						i += mvCesaDmaCopyPrepare(chan, pCmd->pSrc,
										cesaSramVirtPtr[chan]->tempCryptoIV,
										&pDmaDesc[i], MV_FALSE, pCmd->ivOffset,
										pSA->cryptoIvSize, pCmd->skipFlush);
					} else {
						/* For Encryption when IV is NOT from User: */
						/* Copy IV from SRAM to buffer (pCmd->ivOffset) */
						if (pCmd->ivFromUser == 0) {
							/* copy IV value from cryptoIV to Buffer (pCmd->ivOffset) */
							i += mvCesaDmaCopyPrepare(chan, pCmd->pSrc,
								cesaSramVirtPtr[chan]->cryptoIV, &pDmaDesc[i],
								MV_TRUE, pCmd->ivOffset, pSA->cryptoIvSize, pCmd->skipFlush);
						}
					}
				} else {
					cryptoIvOffset = pCmd->ivOffset;
				}
			}
		}

		if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) {
			/* MAC digest special processing on Decode direction */
			if ((pSA->config & MV_CESA_DIRECTION_MASK) == (MV_CESA_DIR_DECODE << MV_CESA_DIRECTION_BIT)) {
				/* Save digest from pCmd->digestOffset */
				mvCesaCopyFromMbuf(pReq->frags.orgDigest,
						   pCmd->pSrc, pCmd->digestOffset, pSA->digestSize);

				/* If pCmd->digestOffset is not located on the first */
				if (pCmd->digestOffset > (copySize - pSA->digestSize)) {
					MV_U8 digestZero[MV_CESA_MAX_DIGEST_SIZE];

					/* Set zeros to pCmd->digestOffset (DRAM) */
					memset(digestZero, 0, MV_CESA_MAX_DIGEST_SIZE);
					mvCesaCopyToMbuf(digestZero, pCmd->pSrc, pCmd->digestOffset, pSA->digestSize);

					/* Prepare dummy place for digest in SRAM */
					digestOffset = cesaSramVirtPtr[chan]->tempDigest - mvCesaSramAddrGet(chan);
				} else {
					digestOffset = pCmd->digestOffset;
				}
			}
		}
		/* Update SA in SRAM */
		if (cesaLastSid[chan] != sid) {
			mvCesaSramSaUpdate(chan, sid, &pDmaDesc[i]);
			i++;
		}

		pReq->fragMode = MV_CESA_FRAG_MIDDLE;
	} else {
		/* Continue fragment */
		fixOffset = 0;
		cryptoOffset = 0;
		macOffset = 0;
		if ((pCmd->pSrc->mbufSize - pReq->frags.bufOffset) <= sizeof(cesaSramVirtPtr[chan]->buf)) {
			/* Last fragment */
			config = pSA->config | (MV_CESA_FRAG_LAST << MV_CESA_FRAG_MODE_OFFSET);
			pReq->fragMode = MV_CESA_FRAG_LAST;
			copySize = pCmd->pSrc->mbufSize - pReq->frags.bufOffset;

			if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) {
				macDataSize = pCmd->macLength - pReq->frags.macSize;

				/* If pCmd->digestOffset is not located on last fragment */
				if (pCmd->digestOffset < pReq->frags.bufOffset) {
					/* Prepare dummy place for digest in SRAM */
					digestOffset = cesaSramVirtPtr[chan]->tempDigest - mvCesaSramAddrGet(chan);
				} else {
					digestOffset = pCmd->digestOffset - pReq->frags.bufOffset;
				}
				pReq->frags.newDigestOffset = digestOffset;
				macTotalLen = pCmd->macLength;
			}

			if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET))
				cryptoDataSize = pCmd->cryptoLength - pReq->frags.cryptoSize;

			/* cryptoIvOffset - don't care */
		} else {
			/* Middle fragment */
			config = pSA->config | (MV_CESA_FRAG_MIDDLE << MV_CESA_FRAG_MODE_OFFSET);
			copySize = sizeof(cesaSramVirtPtr[chan]->buf);
			/* digestOffset and cryptoIvOffset - don't care */

			/* Find fragment size */
			mvCesaFragSizeFind(pSA, pReq, cryptoOffset, macOffset,
					   &copySize, &cryptoDataSize, &macDataSize);
		}
	}

	/********* Prepare DMA descriptors to copy from pSrc to SRAM *********/
	pMbuf = pCmd->pSrc;
	i += mvCesaDmaCopyPrepare(chan, pMbuf, pSramBuf + fixOffset, &pDmaDesc[i],
				  MV_FALSE, pReq->frags.bufOffset, copySize, pCmd->skipFlush);

	/* Prepare CESA descriptor to copy from DRAM to SRAM by DMA */
	mvCesaSramDescrBuild(chan, config, frag,
			     cryptoOffset + fixOffset, cryptoIvOffset + fixOffset,
			     cryptoDataSize, macOffset + fixOffset,
			     digestOffset + fixOffset, macDataSize, macTotalLen, pReq, &pDmaDesc[i]);
	i++;

	/* Add special descriptor Ownership for CPU */
	pDmaDesc[i].byteCnt = 0;
	pDmaDesc[i].phySrcAdd = 0;
	pDmaDesc[i].phyDestAdd = 0;
	i++;

	/********* Prepare DMA descriptors to copy from SRAM to pDst *********/
	pMbuf = pCmd->pDst;
	i += mvCesaDmaCopyPrepare(chan, pMbuf, pSramBuf + fixOffset, &pDmaDesc[i],
				  MV_TRUE, pReq->frags.bufOffset, copySize, pCmd->skipFlush);

	/* Next field of Last DMA descriptor must be NULL */
	pDmaDesc[i - 1].phyNextDescPtr = 0;
	pReq->dma[frag].pDmaLast = &pDmaDesc[i - 1];
	mvOsCacheFlush(cesaOsHandle, pReq->dma[frag].pDmaFirst, i * sizeof(MV_DMA_DESC));

	/*mvCesaDebugDescriptor(&cesaSramVirtPtr[chan]->desc[frag]); */

	pReq->frags.bufOffset += copySize;
	pReq->frags.cryptoSize += cryptoDataSize;
	pReq->frags.macSize += macDataSize;

	return MV_OK;
}

/*******************************************************************************
* mvCesaReqProcess - Process regular (Non-fragmented) request
*
* DESCRIPTION:
*       This function processes the whole (not fragmented) request
*
* INPUT:
*       MV_CESA_REQ* pReq   - Pointer to the request in the request queue.
*
* RETURN:
*       MV_OK   - The request is successfully passed to HW for processing.
*       Other   - Failure. The request will not be processed
*
*******************************************************************************/
static MV_STATUS mvCesaReqProcess(MV_U8 chan, MV_CESA_REQ *pReq)
{
	MV_CESA_MBUF *pMbuf;
	MV_DMA_DESC *pDmaDesc;
	MV_U8 *pSramBuf;
	int sid, i, fixOffset;
	MV_CESA_SA *pSA;
	MV_CESA_COMMAND *pCmd = pReq->pCmd;

	cesaStats.procCount++;

	sid = pCmd->sessionId;
	pSA = pCesaSAD[sid];
	pDmaDesc = pReq->dma[0].pDmaFirst;
	pSramBuf = cesaSramVirtPtr[chan]->buf;
	fixOffset = pReq->fixOffset;

/*
    mvOsPrintf("mvCesaReqProcess: sid=%d, pSA=%p, pDmaDesc=%p, pSramBuf=%p\n",
			sid, pSA, pDmaDesc, pSramBuf);
*/
	i = 0;

	/* Crypto IV Special processing in CBC mode for Encryption direction */
	if (((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET)) &&
	    ((pSA->config & MV_CESA_CRYPTO_MODE_MASK) == (MV_CESA_CRYPTO_CBC << MV_CESA_CRYPTO_MODE_BIT)) &&
	    ((pSA->config & MV_CESA_DIRECTION_MASK) == (MV_CESA_DIR_ENCODE << MV_CESA_DIRECTION_BIT)) &&
	    (pCmd->ivFromUser)) {
		/* For Crypto Encode in CBC mode HW always takes IV from SRAM IVPointer,
		 * (not from IVBufPointer). So when ivFromUser==1, we should copy IV from user place
		 * in the buffer to SRAM IVPointer
		 */
		i += mvCesaDmaCopyPrepare(chan, pCmd->pSrc, cesaSramVirtPtr[chan]->cryptoIV, &pDmaDesc[i],
					  MV_FALSE, pCmd->ivOffset, pSA->cryptoIvSize, pCmd->skipFlush);
	}

	/* Update SA in SRAM */
	if (cesaLastSid[chan] != sid) {
		mvCesaSramSaUpdate(chan, sid, &pDmaDesc[i]);
		i++;
	}

	/********* Prepare DMA descriptors to copy from pSrc to SRAM *********/
	pMbuf = pCmd->pSrc;
	i += mvCesaDmaCopyPrepare(chan, pMbuf, pSramBuf + fixOffset, &pDmaDesc[i],
				  MV_FALSE, 0, pMbuf->mbufSize, pCmd->skipFlush);

	/* Prepare Security Accelerator descriptor to SRAM words 0 - 7 */
	mvCesaSramDescrBuild(chan, pSA->config, 0, pCmd->cryptoOffset + fixOffset,
			     pCmd->ivOffset + fixOffset, pCmd->cryptoLength,
			     pCmd->macOffset + fixOffset, pCmd->digestOffset + fixOffset,
			     pCmd->macLength, pCmd->macLength, pReq, &pDmaDesc[i]);
	i++;

	/* Add special descriptor Ownership for CPU */
	pDmaDesc[i].byteCnt = 0;
	pDmaDesc[i].phySrcAdd = 0;
	pDmaDesc[i].phyDestAdd = 0;
	i++;

	/********* Prepare DMA descriptors to copy from SRAM to pDst *********/
	pMbuf = pCmd->pDst;
	i += mvCesaDmaCopyPrepare(chan, pMbuf, pSramBuf + fixOffset, &pDmaDesc[i],
				  MV_TRUE, 0, pMbuf->mbufSize, pCmd->skipFlush);

	/* Next field of Last DMA descriptor must be NULL */
	pDmaDesc[i - 1].phyNextDescPtr = 0;
	pReq->dma[0].pDmaLast = &pDmaDesc[i - 1];
	mvOsCacheFlush(cesaOsHandle, pReq->dma[0].pDmaFirst, i * sizeof(MV_DMA_DESC));

	return MV_OK;
}

/*******************************************************************************
* mvCesaSramDescrBuild - Set CESA descriptor in SRAM
*
* DESCRIPTION:
*       This function builds CESA descriptor in SRAM from all Command parameters
*
*
* INPUT:
*       int     chan            - CESA channel uses the descriptor
*       MV_U32  config          - 32 bits of WORD_0 in CESA descriptor structure
*       int     cryptoOffset    - Offset from the beginning of SRAM buffer where
*                               data for encryption/decription is started.
*       int     ivOffset        - Offset of crypto IV from the SRAM base. Valid only
*                               for first fragment.
*       int     cryptoLength    - Size (in bytes) of data for encryption/descryption
*                               operation on this fragment.
*       int     macOffset       - Offset from the beginning of SRAM buffer where
*                               data for Authentication is started
*       int     digestOffset    - Offset from the beginning of SRAM buffer where
*                               digest is located. Valid for first and last fragments.
*       int     macLength       - Size (in bytes) of data for Authentication
*                               operation on this fragment.
*       int     macTotalLen     - Toatl size (in bytes) of data for Authentication
*                               operation on the whole request (packet). Valid for
*                               last fragment only.
*
* RETURN:   None
*
*******************************************************************************/
static void mvCesaSramDescrBuild(MV_U8 chan, MV_U32 config, int frag,
				 int cryptoOffset, int ivOffset, int cryptoLength,
				 int macOffset, int digestOffset, int macLength,
				 int macTotalLen, MV_CESA_REQ *pReq, MV_DMA_DESC *pDmaDesc)
{
	MV_CESA_DESC *pCesaDesc = &pReq->pCesaDesc[frag];
	MV_CESA_DESC *pSramDesc = &cesaSramVirtPtr[chan]->desc;
	MV_U16 sramBufOffset = (MV_U16)((MV_U8 *)cesaSramVirtPtr[chan]->buf - mvCesaSramAddrGet(chan));

	pCesaDesc->config = MV_32BIT_LE(config);

	if ((config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET)) {
		/* word 1 */
		pCesaDesc->cryptoSrcOffset = MV_16BIT_LE(sramBufOffset + cryptoOffset);
		pCesaDesc->cryptoDstOffset = MV_16BIT_LE(sramBufOffset + cryptoOffset);
		/* word 2 */
		pCesaDesc->cryptoDataLen = MV_16BIT_LE(cryptoLength);
		/* word 3 */
		pCesaDesc->cryptoKeyOffset = MV_16BIT_LE((MV_U16) (cesaSramVirtPtr[chan]->sramSA.cryptoKey -
								   mvCesaSramAddrGet(chan)));
		/* word 4 */
		pCesaDesc->cryptoIvOffset = MV_16BIT_LE((MV_U16) (cesaSramVirtPtr[chan]->cryptoIV - mvCesaSramAddrGet(chan)));
		pCesaDesc->cryptoIvBufOffset = MV_16BIT_LE(sramBufOffset + ivOffset);
	}

	if ((config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) {
		/* word 5 */
		pCesaDesc->macSrcOffset = MV_16BIT_LE(sramBufOffset + macOffset);
		pCesaDesc->macTotalLen = MV_16BIT_LE(macTotalLen);

		/* word 6 */
		pCesaDesc->macDigestOffset = MV_16BIT_LE(sramBufOffset + digestOffset);
		pCesaDesc->macDataLen = MV_16BIT_LE(macLength);

		/* word 7 */
		pCesaDesc->macInnerIvOffset = MV_16BIT_LE((MV_U16) (cesaSramVirtPtr[chan]->sramSA.macInnerIV -
								    mvCesaSramAddrGet(chan)));
		pCesaDesc->macOuterIvOffset = MV_16BIT_LE((MV_U16) (cesaSramVirtPtr[chan]->sramSA.macOuterIV -
								    mvCesaSramAddrGet(chan)));
	}
	/* Prepare DMA descriptor to CESA descriptor from DRAM to SRAM */
	pDmaDesc->phySrcAdd = MV_32BIT_LE(mvCesaVirtToPhys(&pReq->cesaDescBuf, pCesaDesc));
	pDmaDesc->phyDestAdd = MV_32BIT_LE(mvCesaSramVirtToPhys(chan, NULL, (MV_U8 *) pSramDesc));
	pDmaDesc->byteCnt = MV_32BIT_LE(sizeof(MV_CESA_DESC) | BIT31);

	/* flush Source buffer */
	mvOsCacheFlush(cesaOsHandle, pCesaDesc, sizeof(MV_CESA_DESC));
}

/*******************************************************************************
* mvCesaSramSaUpdate - Move required SA information to SRAM if needed.
*
* DESCRIPTION:
*   Copy to SRAM values of the required SA.
*
*
* INPUT:
*       short       sid          - Session ID needs SRAM Cache update
*       MV_DMA_DESC *pDmaDesc   - Pointer to DMA descriptor used to
*                                copy SA values from DRAM to SRAM.
*
* RETURN:
*       MV_OK           - Cache entry for this SA copied to SRAM.
*       MV_NO_CHANGE    - Cache entry for this SA already exist in SRAM
*
*******************************************************************************/
static INLINE void mvCesaSramSaUpdate(MV_U8 chan, short sid, MV_DMA_DESC *pDmaDesc)
{
	MV_CESA_SA *pSA = pCesaSAD[sid];

	/* Prepare DMA descriptor to Copy CACHE_SA from SA database in DRAM to SRAM */
	pDmaDesc->byteCnt = MV_32BIT_LE(sizeof(MV_CESA_SRAM_SA) | BIT31);
	pDmaDesc->phySrcAdd = pSA->sramSAPhysAddr;
	pDmaDesc->phyDestAdd = MV_32BIT_LE(mvCesaSramVirtToPhys(chan, NULL, (MV_U8 *)&cesaSramVirtPtr[chan]->sramSA));

	/* Source buffer is already flushed during OpenSession */
	/*mvOsCacheFlush(cesaOsHandle, &pSA->sramSA, sizeof(MV_CESA_SRAM_SA)); */
}

/*******************************************************************************
* mvCesaDmaCopyPrepare - prepare DMA descriptor list to copy data presented by
*                       Mbuf structure from DRAM to SRAM
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_MBUF*   pMbuf       - pointer to Mbuf structure contains request
*                                   data in DRAM
*       MV_U8*          pSramBuf    - pointer to buffer in SRAM where data should
*                                   be copied to.
*       MV_DMA_DESC*    pDmaDesc   - pointer to first DMA descriptor for this copy.
*                                   The function set number of DMA descriptors needed
*                                   to copy the copySize bytes from Mbuf.
*       MV_BOOL         isToMbuf    - Copy direction.
*                                   MV_TRUE means copy from SRAM buffer to Mbuf in DRAM.
*                                   MV_FALSE means copy from Mbuf in DRAM to SRAM buffer.
*       int             offset      - Offset in the Mbuf structure that copy should be
*                                   started from.
*       int             copySize    - Size of data should be copied.
*
* RETURN:
*       int  - number of DMA descriptors used for the copy.
*
*******************************************************************************/
#ifndef MV_NETBSD
static INLINE int mvCesaDmaCopyPrepare(MV_U8 chan, MV_CESA_MBUF *pMbuf, MV_U8 *pSramBuf,
				       MV_DMA_DESC *pDmaDesc, MV_BOOL isToMbuf,
				       int offset, int copySize, MV_BOOL skipFlush)
{
	int bufOffset, bufSize, size, frag, i;
	MV_U8 *pBuf;

	i = 0;

	/* Calculate start place for copy: fragment number and offset in the fragment */
	frag = mvCesaMbufOffset(pMbuf, offset, &bufOffset);
	bufSize = pMbuf->pFrags[frag].bufSize - bufOffset;
	pBuf = pMbuf->pFrags[frag].bufVirtPtr + bufOffset;

	/* Size accumulate total copy size */
	size = 0;

	/* Create DMA lists to copy mBuf from pSrc to SRAM */
	while (size < copySize) {
		/* Find copy size for each DMA descriptor */
		bufSize = MV_MIN(bufSize, (copySize - size));
		pDmaDesc[i].byteCnt = MV_32BIT_LE(bufSize | BIT31);
		if (isToMbuf) {
			pDmaDesc[i].phyDestAdd = MV_32BIT_LE(mvOsIoVirtToPhy(cesaOsHandle, pBuf));
			pDmaDesc[i].phySrcAdd = MV_32BIT_LE(mvCesaSramVirtToPhys(chan, NULL, (pSramBuf + size)));
			/* invalidate the buffer */
			if (skipFlush == MV_FALSE)
				mvOsCacheInvalidate(cesaOsHandle, pBuf, bufSize);
		} else {
			pDmaDesc[i].phySrcAdd = MV_32BIT_LE(mvOsIoVirtToPhy(cesaOsHandle, pBuf));
			pDmaDesc[i].phyDestAdd = MV_32BIT_LE(mvCesaSramVirtToPhys(chan, NULL, (pSramBuf + size)));
			/* flush the buffer */
			if (skipFlush == MV_FALSE)
				mvOsCacheFlush(cesaOsHandle, pBuf, bufSize);
		}

		/* Count number of used DMA descriptors */
		i++;
		size += bufSize;

		/* go to next fragment in the Mbuf */
		frag++;
		pBuf = pMbuf->pFrags[frag].bufVirtPtr;
		bufSize = pMbuf->pFrags[frag].bufSize;
	}
	return i;
}
#else /* MV_NETBSD */
static int mvCesaDmaCopyPrepare(MV_U8 chan, MV_CESA_MBUF *pMbuf, MV_U8 *pSramBuf,
				MV_DMA_DESC *pDmaDesc, MV_BOOL isToMbuf, int offset, int copySize, MV_BOOL skipFlush)
{
	int bufOffset, bufSize, thisSize, size, frag, i;
	MV_ULONG bufPhys, sramPhys;
	MV_U8 *pBuf;

	/*
	 * Calculate start place for copy: fragment number and offset in
	 * the fragment
	 */
	frag = mvCesaMbufOffset(pMbuf, offset, &bufOffset);

	/*
	 * Get SRAM physical address only once. We can update it in-place
	 * as we build the descriptor chain.
	 */
	sramPhys = mvCesaSramVirtToPhys(chan, NULL, pSramBuf);

	/*
	 * 'size' accumulates total copy size, 'i' counts desccriptors.
	 */
	size = i = 0;

	/* Create DMA lists to copy mBuf from pSrc to SRAM */
	while (size < copySize) {
		/*
		 * Calculate # of bytes to copy from the current fragment,
		 * and the pointer to the start of data
		 */
		bufSize = pMbuf->pFrags[frag].bufSize - bufOffset;
		pBuf = pMbuf->pFrags[frag].bufVirtPtr + bufOffset;
		bufOffset = 0;	/* First frag may be non-zero */
		frag++;

		/*
		 * As long as there is data in the current fragment...
		 */
		while (bufSize > 0) {
			/*
			 * Ensure we don't cross an MMU page boundary.
			 * XXX: This is NetBSD-specific, but it is a
			 * quick and dirty way to fix the problem.
			 * A true HAL would rely on the OS-specific
			 * driver to do this...
			 */
			thisSize = PAGE_SIZE - (((MV_ULONG) pBuf) & (PAGE_SIZE - 1));
			thisSize = MV_MIN(bufSize, thisSize);
			/*
			 * Make sure we don't copy more than requested
			 */
			if (thisSize > (copySize - size)) {
				thisSize = copySize - size;
				bufSize = 0;
			}

			/*
			 * Physicall address of this fragment
			 */
			bufPhys = MV_32BIT_LE(mvOsIoVirtToPhy(cesaOsHandle, pBuf));

			/*
			 * Set up the descriptor
			 */
			pDmaDesc[i].byteCnt = MV_32BIT_LE(thisSize | BIT31);
			if (isToMbuf) {
				pDmaDesc[i].phyDestAdd = bufPhys;
				pDmaDesc[i].phySrcAdd = MV_32BIT_LE(sramPhys);
				/* invalidate the buffer */
				if (skipFlush == MV_FALSE)
					mvOsCacheInvalidate(cesaOsHandle, pBuf, thisSize);
			} else {
				pDmaDesc[i].phySrcAdd = bufPhys;
				pDmaDesc[i].phyDestAdd = MV_32BIT_LE(sramPhys);
				/* flush the buffer */
				if (skipFlush == MV_FALSE)
					mvOsCacheFlush(cesaOsHandle, pBuf, thisSize);
			}

			pDmaDesc[i].phyNextDescPtr = MV_32BIT_LE(mvOsIoVirtToPhy(cesaOsHandle, (&pDmaDesc[i + 1])));

			/* flush the DMA desc */
			mvOsCacheFlush(cesaOsHandle, &pDmaDesc[i], sizeof(MV_DMA_DESC));

			/* Update state */
			bufSize -= thisSize;
			sramPhys += thisSize;
			pBuf += thisSize;
			size += thisSize;
			i++;
		}
	}

	return i;
}
#endif /* MV_NETBSD */
/*******************************************************************************
* mvCesaHmacIvGet - Calculate Inner and Outter values from HMAC key
*
* DESCRIPTION:
*       This function calculate Inner and Outer values used for HMAC algorithm.
*       This operation allows improve performance fro the whole HMAC processing.
*
* INPUT:
*       MV_CESA_MAC_MODE    macMode     - Authentication mode: HMAC_MD5, HMAC_SHA1 or HMAC_SHA2.
*       unsigned char       key[]       - Pointer to HMAC key.
*       int                 keyLength   - Size of HMAC key (maximum 64 bytes)
*
* OUTPUT:
*       unsigned char       innerIV[]   - HASH(key^inner)
*       unsigned char       outerIV[]   - HASH(key^outter)
*
* RETURN:   None
*
*******************************************************************************/
static void mvCesaHmacIvGet(MV_CESA_MAC_MODE macMode, unsigned char key[], int keyLength,
			    unsigned char innerIV[], unsigned char outerIV[])
{
	unsigned char inner[MV_CESA_MAX_MAC_KEY_LENGTH];
	unsigned char outer[MV_CESA_MAX_MAC_KEY_LENGTH];
	int i, digestSize = 0;
#if defined(MV_CPU_LE) || defined(MV_PPC)
	MV_U32 swapped32, val32, *pVal32;
#endif
	for (i = 0; i < keyLength; i++) {
		inner[i] = 0x36 ^ key[i];
		outer[i] = 0x5c ^ key[i];
	}

	for (i = keyLength; i < MV_CESA_MAX_MAC_KEY_LENGTH; i++) {
		inner[i] = 0x36;
		outer[i] = 0x5c;
	}
	if (macMode == MV_CESA_MAC_HMAC_MD5) {
		MV_MD5_CONTEXT ctx;

		mvMD5Init(&ctx);
		mvMD5Update(&ctx, inner, MV_CESA_MAX_MAC_KEY_LENGTH);

		memcpy(innerIV, ctx.buf, MV_CESA_MD5_DIGEST_SIZE);
		memset(&ctx, 0, sizeof(ctx));

		mvMD5Init(&ctx);
		mvMD5Update(&ctx, outer, MV_CESA_MAX_MAC_KEY_LENGTH);
		memcpy(outerIV, ctx.buf, MV_CESA_MD5_DIGEST_SIZE);
		memset(&ctx, 0, sizeof(ctx));
		digestSize = MV_CESA_MD5_DIGEST_SIZE;
	} else if (macMode == MV_CESA_MAC_HMAC_SHA1) {
		MV_SHA1_CTX ctx;

		mvSHA1Init(&ctx);
		mvSHA1Update(&ctx, inner, MV_CESA_MAX_MAC_KEY_LENGTH);
		memcpy(innerIV, ctx.state, MV_CESA_SHA1_DIGEST_SIZE);
		memset(&ctx, 0, sizeof(ctx));

		mvSHA1Init(&ctx);
		mvSHA1Update(&ctx, outer, MV_CESA_MAX_MAC_KEY_LENGTH);
		memcpy(outerIV, ctx.state, MV_CESA_SHA1_DIGEST_SIZE);
		memset(&ctx, 0, sizeof(ctx));
		digestSize = MV_CESA_SHA1_DIGEST_SIZE;
	} else if (macMode == MV_CESA_MAC_HMAC_SHA2) {
		sha256_context ctx;

		mvSHA256Init(&ctx);
		mvSHA256Update(&ctx, inner, MV_CESA_MAX_MAC_KEY_LENGTH);
		memcpy(innerIV, ctx.state, MV_CESA_SHA2_DIGEST_SIZE);
		memset(&ctx, 0, sizeof(ctx));

		mvSHA256Init(&ctx);
		mvSHA256Update(&ctx, outer, MV_CESA_MAX_MAC_KEY_LENGTH);
		memcpy(outerIV, ctx.state, MV_CESA_SHA2_DIGEST_SIZE);
		memset(&ctx, 0, sizeof(ctx));
		digestSize = MV_CESA_SHA2_DIGEST_SIZE;
	} else {
		mvOsPrintf("hmacGetIV: Unexpected macMode %d\n", macMode);
	}
#if defined(MV_CPU_LE) || defined(MV_PPC)
	/* 32 bits Swap of Inner and Outer values */
	pVal32 = (MV_U32 *) innerIV;
	for (i = 0; i < digestSize / 4; i++) {
		val32 = *pVal32;
		swapped32 = MV_BYTE_SWAP_32BIT(val32);
		*pVal32 = swapped32;
		pVal32++;
	}
	pVal32 = (MV_U32 *) outerIV;
	for (i = 0; i < digestSize / 4; i++) {
		val32 = *pVal32;
		swapped32 = MV_BYTE_SWAP_32BIT(val32);
		*pVal32 = swapped32;
		pVal32++;
	}
#endif /* defined(MV_CPU_LE) || defined(MV_PPC) */
}

/*******************************************************************************
* mvCesaFragSha1Complete - Complete SHA1 authentication started by HW using SW
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_MBUF*   pMbuf           - Pointer to Mbuf structure where data
*                                       for SHA1 is placed.
*       int             offset          - Offset in the Mbuf structure where
*                                       unprocessed data for SHA1 is started.
*       MV_U8*          pOuterIV        - Pointer to OUTER for this session.
*                                       If pOuterIV==NULL - MAC mode is HASH_SHA1
*                                       If pOuterIV!=NULL - MAC mode is HMAC_SHA1
*       int             macLeftSize     - Size of unprocessed data for SHA1.
*       int             macTotalSize    - Total size of data for SHA1 in the
*                                       request (processed + unprocessed)
*
* OUTPUT:
*       MV_U8*     pDigest  - Pointer to place where calculated Digest will
*                           be stored.
*
* RETURN:   None
*
*******************************************************************************/
static void mvCesaFragSha1Complete(MV_U8 chan, MV_CESA_MBUF *pMbuf, int offset,
				   MV_U8 *pOuterIV, int macLeftSize, int macTotalSize, MV_U8 *pDigest)
{
	MV_SHA1_CTX ctx;
	MV_U8 *pData;
	int i, frag, fragOffset, size;

	/* Read temporary Digest from HW */
	for (i = 0; i < MV_CESA_SHA1_DIGEST_SIZE / 4; i++)
		ctx.state[i] = MV_REG_READ(MV_CESA_AUTH_INIT_VAL_DIGEST_REG(chan, i));

	/* Initialize MV_SHA1_CTX structure */
	memset(ctx.buffer, 0, 64);
	/* Set count[0] in bits. 32 bits is enough for 512 MBytes */
	/* so count[1] is always 0 */
	ctx.count[0] = ((macTotalSize - macLeftSize) * 8);
	ctx.count[1] = 0;

	/* If HMAC - add size of Inner block (64 bytes) ro count[0] */
	if (pOuterIV != NULL)
		ctx.count[0] += (64 * 8);

	/* Get place of unprocessed data in the Mbuf structure */
	frag = mvCesaMbufOffset(pMbuf, offset, &fragOffset);
	if (frag == MV_INVALID) {
		mvOsPrintf("CESA Mbuf Error: offset (%d) out of range\n", offset);
		return;
	}

	pData = pMbuf->pFrags[frag].bufVirtPtr + fragOffset;
	size = pMbuf->pFrags[frag].bufSize - fragOffset;

	/* Complete Inner part */
	while (macLeftSize > 0) {
		if (macLeftSize <= size) {
			mvSHA1Update(&ctx, pData, macLeftSize);
			break;
		}
		mvSHA1Update(&ctx, pData, size);
		macLeftSize -= size;
		frag++;
		pData = pMbuf->pFrags[frag].bufVirtPtr;
		size = pMbuf->pFrags[frag].bufSize;
	}
	mvSHA1Final(pDigest, &ctx);
/*
    mvOsPrintf("mvCesaFragSha1Complete: pOuterIV=%p, macLeftSize=%d, macTotalSize=%d\n",
			pOuterIV, macLeftSize, macTotalSize);
	mvDebugMemDump(pDigest, MV_CESA_SHA1_DIGEST_SIZE, 1);
*/

	if (pOuterIV != NULL) {
		/* If HMAC - Complete Outer part */
		for (i = 0; i < MV_CESA_SHA1_DIGEST_SIZE / 4; i++) {
#if defined(MV_CPU_LE) || defined(MV_ARM)
			ctx.state[i] = MV_BYTE_SWAP_32BIT(((MV_U32 *) pOuterIV)[i]);
#else
			ctx.state[i] = ((MV_U32 *) pOuterIV)[i];
#endif
		}
		memset(ctx.buffer, 0, 64);

		ctx.count[0] = 64 * 8;
		ctx.count[1] = 0;
		mvSHA1Update(&ctx, pDigest, MV_CESA_SHA1_DIGEST_SIZE);
		mvSHA1Final(pDigest, &ctx);
	}
}

/*******************************************************************************
* mvCesaFragMd5Complete - Complete MD5 authentication started by HW using SW
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_MBUF*   pMbuf           - Pointer to Mbuf structure where data
*                                       for SHA1 is placed.
*       int             offset          - Offset in the Mbuf structure where
*                                       unprocessed data for MD5 is started.
*       MV_U8*          pOuterIV        - Pointer to OUTER for this session.
*                                       If pOuterIV==NULL - MAC mode is HASH_MD5
*                                       If pOuterIV!=NULL - MAC mode is HMAC_MD5
*       int             macLeftSize     - Size of unprocessed data for MD5.
*       int             macTotalSize    - Total size of data for MD5 in the
*                                       request (processed + unprocessed)
*
* OUTPUT:
*       MV_U8*     pDigest  - Pointer to place where calculated Digest will
*                           be stored.
*
* RETURN:   None
*
*******************************************************************************/
static void mvCesaFragMd5Complete(MV_U8 chan, MV_CESA_MBUF *pMbuf, int offset,
				  MV_U8 *pOuterIV, int macLeftSize, int macTotalSize, MV_U8 *pDigest)
{
	MV_MD5_CONTEXT ctx;
	MV_U8 *pData;
	int i, frag, fragOffset, size;

	/* Read temporary Digest from HW */
	for (i = 0; i < MV_CESA_MD5_DIGEST_SIZE / 4; i++)
		ctx.buf[i] = MV_REG_READ(MV_CESA_AUTH_INIT_VAL_DIGEST_REG(chan, i));

	memset(ctx.in, 0, 64);

	/* Set count[0] in bits. 32 bits is enough for 512 MBytes */
	/* so count[1] is always 0 */
	ctx.bits[0] = ((macTotalSize - macLeftSize) * 8);
	ctx.bits[1] = 0;

	/* If HMAC - add size of Inner block (64 bytes) ro count[0] */
	if (pOuterIV != NULL)
		ctx.bits[0] += (64 * 8);

	frag = mvCesaMbufOffset(pMbuf, offset, &fragOffset);
	if (frag == MV_INVALID) {
		mvOsPrintf("CESA Mbuf Error: offset (%d) out of range\n", offset);
		return;
	}

	pData = pMbuf->pFrags[frag].bufVirtPtr + fragOffset;
	size = pMbuf->pFrags[frag].bufSize - fragOffset;

	/* Complete Inner part */
	while (macLeftSize > 0) {
		if (macLeftSize <= size) {
			mvMD5Update(&ctx, pData, macLeftSize);
			break;
		}
		mvMD5Update(&ctx, pData, size);
		macLeftSize -= size;
		frag++;
		pData = pMbuf->pFrags[frag].bufVirtPtr;
		size = pMbuf->pFrags[frag].bufSize;
	}
	mvMD5Final(pDigest, &ctx);

/*
    mvOsPrintf("mvCesaFragMd5Complete: pOuterIV=%p, macLeftSize=%d, macTotalSize=%d\n",
				pOuterIV, macLeftSize, macTotalSize);
    mvDebugMemDump(pDigest, MV_CESA_MD5_DIGEST_SIZE, 1);
*/
	if (pOuterIV != NULL) {
		/* Complete Outer part */
		for (i = 0; i < MV_CESA_MD5_DIGEST_SIZE / 4; i++) {
#if defined(MV_CPU_LE) || defined(MV_ARM)
			ctx.buf[i] = MV_BYTE_SWAP_32BIT(((MV_U32 *) pOuterIV)[i]);
#else
			ctx.buf[i] = ((MV_U32 *) pOuterIV)[i];
#endif
		}
		memset(ctx.in, 0, 64);

		ctx.bits[0] = 64 * 8;
		ctx.bits[1] = 0;
		mvMD5Update(&ctx, pDigest, MV_CESA_MD5_DIGEST_SIZE);
		mvMD5Final(pDigest, &ctx);
	}
}

/*******************************************************************************
* mvCesaFragSha2Complete - Complete SHA2 authentication started by HW using SW
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_MBUF*   pMbuf           - Pointer to Mbuf structure where data
*                                       for SHA2 is placed.
*       int             offset          - Offset in the Mbuf structure where
*                                       unprocessed data for SHA2 is started.
*       MV_U8*          pOuterIV        - Pointer to OUTER for this session.
*                                       If pOuterIV==NULL - MAC mode is HASH_SHA2
*                                       If pOuterIV!=NULL - MAC mode is HMAC_SHA2
*       int             macLeftSize     - Size of unprocessed data for SHA2.
*       int             macTotalSize    - Total size of data for SHA2 in the
*                                       request (processed + unprocessed)
*
* OUTPUT:
*       MV_U8*     pDigest  - Pointer to place where calculated Digest will
*                           be stored.
*
* RETURN:   None
*
*******************************************************************************/
static void mvCesaFragSha2Complete(MV_U8 chan, MV_CESA_MBUF *pMbuf, int offset,
				   MV_U8 *pOuterIV, int macLeftSize, int macTotalSize, MV_U8 *pDigest)
{
	sha256_context ctx;
	MV_U8 *pData;
	int i, frag, fragOffset, size;

	/* Read temporary Digest from HW */
	for (i = 0; i < MV_CESA_SHA2_DIGEST_SIZE / 4; i++)
		ctx.state[i] = MV_REG_READ(MV_CESA_AUTH_INIT_VAL_DIGEST_REG(chan, i));

	/* Initialize sha256_context structure */
	memset(ctx.buffer, 0, 64);
	/* Set total[0] in bits. 32 bits is enough for 512 MBytes */
	/* so total[1] is always 0 */
	ctx.total[0] = ((macTotalSize - macLeftSize) * 8);
	ctx.total[1] = 0;

	/* If HMAC - add size of Inner block (64 bytes) ro count[0] */
	if (pOuterIV != NULL)
		ctx.total[0] += (64 * 8);

	/* Get place of unprocessed data in the Mbuf structure */
	frag = mvCesaMbufOffset(pMbuf, offset, &fragOffset);
	if (frag == MV_INVALID) {
		mvOsPrintf("CESA Mbuf Error: offset (%d) out of range\n", offset);
		return;
	}

	pData = pMbuf->pFrags[frag].bufVirtPtr + fragOffset;
	size = pMbuf->pFrags[frag].bufSize - fragOffset;

	/* Complete Inner part */
	while (macLeftSize > 0) {
		if (macLeftSize <= size) {
			mvSHA256Update(&ctx, pData, macLeftSize);
			break;
		}
		mvSHA256Update(&ctx, pData, size);
		macLeftSize -= size;
		frag++;
		pData = pMbuf->pFrags[frag].bufVirtPtr;
		size = pMbuf->pFrags[frag].bufSize;
	}
	mvSHA256Finish(&ctx, pDigest);
/*
    mvOsPrintf("mvCesaFragSha2Complete: pOuterIV=%p, macLeftSize=%d, macTotalSize=%d\n",
			pOuterIV, macLeftSize, macTotalSize);
	mvDebugMemDump(pDigest, MV_CESA_SHA2_DIGEST_SIZE, 1);
*/

	if (pOuterIV != NULL) {
		/* If HMAC - Complete Outer part */
		for (i = 0; i < MV_CESA_SHA2_DIGEST_SIZE / 4; i++) {
#if defined(MV_CPU_LE) || defined(MV_ARM)
			ctx.state[i] = MV_BYTE_SWAP_32BIT(((MV_U32 *) pOuterIV)[i]);
#else
			ctx.state[i] = ((MV_U32 *) pOuterIV)[i];
#endif
		}
		memset(ctx.buffer, 0, 64);

		ctx.total[0] = 64 * 8;
		ctx.total[1] = 0;
		mvSHA256Update(&ctx, pDigest, MV_CESA_SHA2_DIGEST_SIZE);
		mvSHA256Finish(&ctx, pDigest);
	}
}


/*******************************************************************************
* mvCesaFragAuthComplete -
*
* DESCRIPTION:
*
*
* INPUT:
* 	MB_U8		chan,
*       MV_CESA_REQ*    pReq,
*       MV_CESA_SA*     pSA,
*       int             macDataSize
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static MV_STATUS mvCesaFragAuthComplete(MV_U8 chan, MV_CESA_REQ *pReq, MV_CESA_SA *pSA, int macDataSize)
{
	MV_CESA_COMMAND *pCmd = pReq->pCmd;
	MV_U8 *pDigest;
	MV_CESA_MAC_MODE macMode;
	MV_U8 *pOuterIV = NULL;

	/* Copy data from Source fragment to Destination */
	if (pCmd->pSrc != pCmd->pDst)
		mvCesaMbufCopy(pCmd->pDst, pReq->frags.bufOffset, pCmd->pSrc, pReq->frags.bufOffset, macDataSize);

/*
    mvCesaCopyFromMbuf(cesaSramVirtPtr[chan]->buf[0], pCmd->pSrc, pReq->frags.bufOffset, macDataSize);
    mvCesaCopyToMbuf(cesaSramVirtPtr[chan]->buf[0], pCmd->pDst, pReq->frags.bufOffset, macDataSize);
*/
	pDigest = (mvCesaSramAddrGet(chan) + pReq->frags.newDigestOffset);

	macMode = (pSA->config & MV_CESA_MAC_MODE_MASK) >> MV_CESA_MAC_MODE_OFFSET;
/*
    mvOsPrintf("macDataSize=%d, macLength=%d, digestOffset=%d, macMode=%d\n",
		macDataSize, pCmd->macLength, pCmd->digestOffset, macMode);
*/
	switch (macMode) {
	case MV_CESA_MAC_HMAC_MD5:
		pOuterIV = pSA->pSramSA->macOuterIV;
		/* fallthrough */

	case MV_CESA_MAC_MD5:
		mvCesaFragMd5Complete(chan, pCmd->pDst, pReq->frags.bufOffset, pOuterIV,
				      macDataSize, pCmd->macLength, pDigest);
		break;

	case MV_CESA_MAC_HMAC_SHA1:
		pOuterIV = pSA->pSramSA->macOuterIV;
		/* fallthrough */

	case MV_CESA_MAC_SHA1:
		mvCesaFragSha1Complete(chan, pCmd->pDst, pReq->frags.bufOffset, pOuterIV,
				       macDataSize, pCmd->macLength, pDigest);
		break;

	case MV_CESA_MAC_HMAC_SHA2:
		pOuterIV = pSA->pSramSA->macOuterIV;
		/* fallthrough */

	case MV_CESA_MAC_SHA2:
		mvCesaFragSha2Complete(chan, pCmd->pDst, pReq->frags.bufOffset, pOuterIV,
				       macDataSize, pCmd->macLength, pDigest);
		break;

	default:
		mvOsPrintf("mvCesaFragAuthComplete: Unexpected macMode %d\n", macMode);
		return MV_BAD_PARAM;
	}
	return MV_OK;
}

/*******************************************************************************
* mvCesaCtrModeInit -
*
* DESCRIPTION:
*
*
* INPUT: NONE
*
*
* RETURN:
*       MV_CESA_COMMAND*
*
*******************************************************************************/
static MV_CESA_COMMAND *mvCesaCtrModeInit(void)
{
	MV_CESA_MBUF *pMbuf;
	MV_U8 *pBuf;
	MV_CESA_COMMAND *pCmd;

	pBuf = mvOsMalloc(sizeof(MV_CESA_COMMAND) + sizeof(MV_CESA_MBUF) + sizeof(MV_BUF_INFO) + 100);
	if (pBuf == NULL) {
		mvOsPrintf("mvCesaCtrModeInit: Can't allocate %u bytes for CTR Mode\n",
			   sizeof(MV_CESA_COMMAND) + sizeof(MV_CESA_MBUF) + sizeof(MV_BUF_INFO));
		return NULL;
	}
	pCmd = (MV_CESA_COMMAND *)pBuf;
	pBuf += sizeof(MV_CESA_COMMAND);

	pMbuf = (MV_CESA_MBUF *)pBuf;
	pBuf += sizeof(MV_CESA_MBUF);

	pMbuf->pFrags = (MV_BUF_INFO *)pBuf;

	pMbuf->numFrags = 1;
	pCmd->pSrc = pMbuf;
	pCmd->pDst = pMbuf;
/*
    mvOsPrintf("CtrModeInit: pCmd=%p, pSrc=%p, pDst=%p, pFrags=%p\n", pCmd, pCmd->pSrc, pCmd->pDst,
			pMbuf->pFrags);
*/
	return pCmd;
}

/*******************************************************************************
* mvCesaCtrModePrepare -
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_COMMAND *pCtrModeCmd, MV_CESA_COMMAND *pCmd
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static MV_STATUS mvCesaCtrModePrepare(MV_CESA_COMMAND *pCtrModeCmd, MV_CESA_COMMAND *pCmd)
{
	MV_CESA_MBUF *pMbuf;
	MV_U8 *pBuf, *pIV;
	MV_U32 counter, *pCounter;
	int cryptoSize = MV_ALIGN_UP(pCmd->cryptoLength, MV_CESA_AES_BLOCK_SIZE);
/*
    mvOsPrintf("CtrModePrepare: pCmd=%p, pCtrSrc=%p, pCtrDst=%p, pOrgCmd=%p, pOrgSrc=%p, pOrgDst=%p\n",
			pCmd, pCmd->pSrc, pCmd->pDst,
			pCtrModeCmd, pCtrModeCmd->pSrc, pCtrModeCmd->pDst);
*/
	pMbuf = pCtrModeCmd->pSrc;

	/* Allocate buffer for Key stream */
	pBuf = mvOsIoCachedMalloc(cesaOsHandle, cryptoSize, &pMbuf->pFrags[0].bufPhysAddr, &pMbuf->pFrags[0].memHandle);
	if (pBuf == NULL) {
		mvOsPrintf("mvCesaCtrModePrepare: Can't allocate %d bytes\n", cryptoSize);
		return MV_OUT_OF_CPU_MEM;
	}
	memset(pBuf, 0, cryptoSize);
	mvOsCacheFlush(cesaOsHandle, pBuf, cryptoSize);

	pMbuf->pFrags[0].bufVirtPtr = pBuf;
	pMbuf->mbufSize = cryptoSize;
	pMbuf->pFrags[0].bufSize = cryptoSize;

	pCtrModeCmd->pReqPrv = pCmd->pReqPrv;
	pCtrModeCmd->sessionId = pCmd->sessionId;

	/* ivFromUser and ivOffset are don't care */
	pCtrModeCmd->cryptoOffset = 0;
	pCtrModeCmd->cryptoLength = cryptoSize;

	/* digestOffset, macOffset and macLength are don't care */

	mvCesaCopyFromMbuf(pBuf, pCmd->pSrc, pCmd->ivOffset, MV_CESA_AES_BLOCK_SIZE);
	pCounter = (MV_U32 *)(pBuf + (MV_CESA_AES_BLOCK_SIZE - sizeof(counter)));
	counter = *pCounter;
	counter = MV_32BIT_BE(counter);
	pIV = pBuf;
	cryptoSize -= MV_CESA_AES_BLOCK_SIZE;

	/* fill key stream */
	while (cryptoSize > 0) {
		pBuf += MV_CESA_AES_BLOCK_SIZE;
		memcpy(pBuf, pIV, MV_CESA_AES_BLOCK_SIZE - sizeof(counter));
		pCounter = (MV_U32 *)(pBuf + (MV_CESA_AES_BLOCK_SIZE - sizeof(counter)));
		counter++;
		*pCounter = MV_32BIT_BE(counter);
		cryptoSize -= MV_CESA_AES_BLOCK_SIZE;
	}

	return MV_OK;
}

/*******************************************************************************
* mvCesaCtrModeComplete -
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_COMMAND *pOrgCmd, MV_CESA_COMMAND *pCmd
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static MV_STATUS mvCesaCtrModeComplete(MV_CESA_COMMAND *pOrgCmd, MV_CESA_COMMAND *pCmd)
{
	int srcFrag, dstFrag, srcOffset, dstOffset, keyOffset, srcSize, dstSize;
	int cryptoSize = pCmd->cryptoLength;
	MV_U8 *pSrc, *pDst, *pKey;
	MV_STATUS status = MV_OK;
/*
    mvOsPrintf("CtrModeComplete: pCmd=%p, pCtrSrc=%p, pCtrDst=%p, pOrgCmd=%p, pOrgSrc=%p, pOrgDst=%p\n",
			pCmd, pCmd->pSrc, pCmd->pDst,
			pOrgCmd, pOrgCmd->pSrc, pOrgCmd->pDst);
*/
	/* XOR source data with key stream to destination data */
	pKey = pCmd->pDst->pFrags[0].bufVirtPtr;
	keyOffset = 0;

	if ((pOrgCmd->pSrc != pOrgCmd->pDst) && (pOrgCmd->cryptoOffset > 0)) {
		/* Copy Prefix from source buffer to destination buffer */

		status = mvCesaMbufCopy(pOrgCmd->pDst, 0, pOrgCmd->pSrc, 0, pOrgCmd->cryptoOffset);
/*
		status = mvCesaCopyFromMbuf(tempBuf, pOrgCmd->pSrc, 0, pOrgCmd->cryptoOffset);
		status = mvCesaCopyToMbuf(tempBuf, pOrgCmd->pDst, 0, pOrgCmd->cryptoOffset);
*/
	}

	srcFrag = mvCesaMbufOffset(pOrgCmd->pSrc, pOrgCmd->cryptoOffset, &srcOffset);
	pSrc = pOrgCmd->pSrc->pFrags[srcFrag].bufVirtPtr;
	srcSize = pOrgCmd->pSrc->pFrags[srcFrag].bufSize;

	dstFrag = mvCesaMbufOffset(pOrgCmd->pDst, pOrgCmd->cryptoOffset, &dstOffset);
	pDst = pOrgCmd->pDst->pFrags[dstFrag].bufVirtPtr;
	dstSize = pOrgCmd->pDst->pFrags[dstFrag].bufSize;

	while (cryptoSize > 0) {
		pDst[dstOffset] = (pSrc[srcOffset] ^ pKey[keyOffset]);

		cryptoSize--;
		dstOffset++;
		srcOffset++;
		keyOffset++;

		if (srcOffset >= srcSize) {
			srcFrag++;
			srcOffset = 0;
			pSrc = pOrgCmd->pSrc->pFrags[srcFrag].bufVirtPtr;
			srcSize = pOrgCmd->pSrc->pFrags[srcFrag].bufSize;
		}

		if (dstOffset >= dstSize) {
			dstFrag++;
			dstOffset = 0;
			pDst = pOrgCmd->pDst->pFrags[dstFrag].bufVirtPtr;
			dstSize = pOrgCmd->pDst->pFrags[dstFrag].bufSize;
		}
	}

	if (pOrgCmd->pSrc != pOrgCmd->pDst) {
		/* Copy Suffix from source buffer to destination buffer */
		srcOffset = pOrgCmd->cryptoOffset + pOrgCmd->cryptoLength;

		if ((pOrgCmd->pDst->mbufSize - srcOffset) > 0) {
			status = mvCesaMbufCopy(pOrgCmd->pDst, srcOffset,
						pOrgCmd->pSrc, srcOffset, pOrgCmd->pDst->mbufSize - srcOffset);
		}

/*
		status = mvCesaCopyFromMbuf(tempBuf, pOrgCmd->pSrc, srcOffset, pOrgCmd->pSrc->mbufSize - srcOffset);
		status = mvCesaCopyToMbuf(tempBuf, pOrgCmd->pDst, srcOffset, pOrgCmd->pDst->mbufSize - srcOffset);
*/
	}

	/* Free buffer used for Key stream */
	mvOsIoCachedFree(cesaOsHandle, pCmd->pDst->pFrags[0].bufSize,
			 pCmd->pDst->pFrags[0].bufPhysAddr,
			 pCmd->pDst->pFrags[0].bufVirtPtr, pCmd->pDst->pFrags[0].memHandle);

	return MV_OK;
}

/*******************************************************************************
* mvCesaCtrModeFinish -
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_COMMAND* pCmd
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static void mvCesaCtrModeFinish(MV_CESA_COMMAND *pCmd)
{
	mvOsFree(pCmd);
}

/*******************************************************************************
* mvCesaParamCheck -
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_SA* pSA, MV_CESA_COMMAND *pCmd, MV_U8* pFixOffset
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static MV_STATUS mvCesaParamCheck(MV_CESA_SA *pSA, MV_CESA_COMMAND *pCmd, MV_U8 *pFixOffset)
{
	MV_U8 fixOffset = 0xFF;

/*
	mvOsPrintf("mvCesaParamCheck:macOffset=%d digestOffset=%d cryptoOffset=%d ivOffset=%d"
		"cryptoLength=%d cryptoBlockSize=%d mbufSize=%d\n",
		pCmd->macOffset, pCmd->digestOffset, pCmd->cryptoOffset, pCmd->ivOffset,
		pCmd->cryptoLength, pSA->cryptoBlockSize, pCmd->pSrc->mbufSize);
*/

	/* Check AUTH operation parameters */
	if (((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET))) {
		/* MAC offset should be at least 4 byte aligned */
		if (MV_IS_NOT_ALIGN(pCmd->macOffset, 4)) {
			mvOsPrintf("mvCesaAction: macOffset %d must be 4 byte aligned\n", pCmd->macOffset);
			return MV_BAD_PARAM;
		}
		/* Digest offset must be 4 byte aligned */
		if (MV_IS_NOT_ALIGN(pCmd->digestOffset, 4)) {
			mvOsPrintf("mvCesaAction: digestOffset %d must be 4 byte aligned\n", pCmd->digestOffset);
			return MV_BAD_PARAM;
		}
		/* In addition all offsets should be the same alignment: 8 or 4 */
		if (fixOffset == 0xFF) {
			fixOffset = (pCmd->macOffset % 8);
		} else {
			if ((pCmd->macOffset % 8) != fixOffset) {
				mvOsPrintf("mvCesaAction: macOffset %d mod 8 must be equal %d\n",
					   pCmd->macOffset, fixOffset);
				return MV_BAD_PARAM;
			}
		}
		if ((pCmd->digestOffset % 8) != fixOffset) {
			mvOsPrintf("mvCesaAction: digestOffset %d mod 8 must be equal %d\n",
				   pCmd->digestOffset, fixOffset);
			return MV_BAD_PARAM;
		}
	}
	/* Check CRYPTO operation parameters */
	if (((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET))) {
		/* CryptoOffset should be at least 4 byte aligned */
		if (MV_IS_NOT_ALIGN(pCmd->cryptoOffset, 4)) {
			mvOsPrintf("CesaAction: cryptoOffset=%d must be 4 byte aligned\n", pCmd->cryptoOffset);
			return MV_BAD_PARAM;
		}
		/* cryptoLength should be the whole number of blocks */
		if (MV_IS_NOT_ALIGN(pCmd->cryptoLength, pSA->cryptoBlockSize)) {
			mvOsPrintf("mvCesaAction: cryptoLength=%d must be %d byte aligned\n",
				   pCmd->cryptoLength, pSA->cryptoBlockSize);
			return MV_BAD_PARAM;
		}
		if (fixOffset == 0xFF) {
			fixOffset = (pCmd->cryptoOffset % 8);
		} else {
			/* In addition all offsets should be the same alignment: 8 or 4 */
			if ((pCmd->cryptoOffset % 8) != fixOffset) {
				mvOsPrintf("mvCesaAction: cryptoOffset %d mod 8 must be equal %d \n",
					   pCmd->cryptoOffset, fixOffset);
				return MV_BAD_PARAM;
			}
		}

		/* check for CBC mode */
		if (pSA->cryptoIvSize > 0) {
			/* cryptoIV must not be part of CryptoLength */
			if (((pCmd->ivOffset + pSA->cryptoIvSize) > pCmd->cryptoOffset) &&
			    (pCmd->ivOffset < (pCmd->cryptoOffset + pCmd->cryptoLength))) {
				mvOsPrintf
				    ("mvCesaFragParamCheck: cryptoIvOffset (%d) is part of cryptoLength (%d+%d)\n",
				     pCmd->ivOffset, pCmd->macOffset, pCmd->macLength);
				return MV_BAD_PARAM;
			}

			/* ivOffset must be 4 byte aligned */
			if (MV_IS_NOT_ALIGN(pCmd->ivOffset, 4)) {
				mvOsPrintf("CesaAction: ivOffset=%d must be 4 byte aligned\n", pCmd->ivOffset);
				return MV_BAD_PARAM;
			}
			/* In addition all offsets should be the same alignment: 8 or 4 */
			if ((pCmd->ivOffset % 8) != fixOffset) {
				mvOsPrintf("mvCesaAction: ivOffset %d mod 8 must be %d\n", pCmd->ivOffset, fixOffset);
				return MV_BAD_PARAM;
			}
		}
	}
/*
	if (fixOffset != 0) {
		mvOsPrintf("%s: fixOffset = %d\n", __func__, fixOffset);
		mvOsPrintf("macOff=%d digestOff=%d cryptoOff=%d ivOff=%d cryptoLen=%d cryptoBlockSize=%d mbufSize=%d\n",
			pCmd->macOffset, pCmd->digestOffset, pCmd->cryptoOffset, pCmd->ivOffset,
			pCmd->cryptoLength, pSA->cryptoBlockSize, pCmd->pSrc->mbufSize);
	}
*/
	*pFixOffset = fixOffset;

	return MV_OK;
}

/*******************************************************************************
* mvCesaFragParamCheck -
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_U8 chan, MV_CESA_SA* pSA, MV_CESA_COMMAND *pCmd
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static MV_STATUS mvCesaFragParamCheck(MV_U8 chan, MV_CESA_SA *pSA, MV_CESA_COMMAND *pCmd)
{
	int offset;

	if (((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET))) {
		/* macOffset must be less that SRAM buffer size */
		if (pCmd->macOffset > (sizeof(cesaSramVirtPtr[chan]->buf) - MV_CESA_AUTH_BLOCK_SIZE)) {
			mvOsPrintf("mvCesaFragParamCheck: macOffset is too large (%d)\n", pCmd->macOffset);
			return MV_BAD_PARAM;
		}
		/* macOffset+macSize must be more than mbufSize - SRAM buffer size */
		if (((pCmd->macOffset + pCmd->macLength) > pCmd->pSrc->mbufSize) ||
		    ((pCmd->pSrc->mbufSize - (pCmd->macOffset + pCmd->macLength)) >= sizeof(cesaSramVirtPtr[chan]->buf))) {
			mvOsPrintf("mvCesaFragParamCheck: macLength is too large (%d), mbufSize=%d\n",
				   pCmd->macLength, pCmd->pSrc->mbufSize);
			return MV_BAD_PARAM;
		}
	}

	if (((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET))) {
		/* cryptoOffset must be less that SRAM buffer size */
		/* 4 for possible fixOffset */
		if ((pCmd->cryptoOffset + 4) > (sizeof(cesaSramVirtPtr[chan]->buf) - pSA->cryptoBlockSize)) {
			mvOsPrintf("mvCesaFragParamCheck: cryptoOffset is too large (%d)\n", pCmd->cryptoOffset);
			return MV_BAD_PARAM;
		}

		/* cryptoOffset+cryptoSize must be more than mbufSize - SRAM buffer size */
		if (((pCmd->cryptoOffset + pCmd->cryptoLength) > pCmd->pSrc->mbufSize) ||
		    ((pCmd->pSrc->mbufSize - (pCmd->cryptoOffset + pCmd->cryptoLength)) >=
		     (sizeof(cesaSramVirtPtr[chan]->buf) - pSA->cryptoBlockSize))) {
			mvOsPrintf("mvCesaFragParamCheck: cryptoLength is too large (%d), mbufSize=%d\n",
				   pCmd->cryptoLength, pCmd->pSrc->mbufSize);
			return MV_BAD_PARAM;
		}
	}

	/* When MAC_THEN_CRYPTO or CRYPTO_THEN_MAC */
	if (((pSA->config & MV_CESA_OPERATION_MASK) ==
	     (MV_CESA_MAC_THEN_CRYPTO << MV_CESA_OPERATION_OFFSET)) ||
	    ((pSA->config & MV_CESA_OPERATION_MASK) == (MV_CESA_CRYPTO_THEN_MAC << MV_CESA_OPERATION_OFFSET))) {

		/* abs(cryptoOffset-macOffset) must be aligned cryptoBlockSize */
		if (pCmd->cryptoOffset > pCmd->macOffset)
			offset = pCmd->cryptoOffset - pCmd->macOffset;
		else
			offset = pCmd->macOffset - pCmd->cryptoOffset;

		if (MV_IS_NOT_ALIGN(offset, pSA->cryptoBlockSize)) {
/*
		mvOsPrintf("mvCesaFragParamCheck: (cryptoOffset - macOffset) must be %d byte aligned\n",
				pSA->cryptoBlockSize);
*/
			return MV_NOT_ALLOWED;
		}
		/* Digest must not be part of CryptoLength */
		if (((pCmd->digestOffset + pSA->digestSize) > pCmd->cryptoOffset) &&
		    (pCmd->digestOffset < (pCmd->cryptoOffset + pCmd->cryptoLength))) {
/*
		mvOsPrintf("mvCesaFragParamCheck: digestOffset (%d) is part of cryptoLength (%d+%d)\n",
					pCmd->digestOffset, pCmd->cryptoOffset, pCmd->cryptoLength);
*/
			return MV_NOT_ALLOWED;
		}
	}
	return MV_OK;
}

/*******************************************************************************
* mvCesaFragSizeFind -
*
* DESCRIPTION:
*
*
* INPUT:
*       MV_CESA_SA* pSA, MV_CESA_COMMAND *pCmd,
*       int cryptoOffset, int macOffset,
*
* OUTPUT:
*       int* pCopySize, int* pCryptoDataSize, int* pMacDataSize
*
* RETURN:
*       MV_STATUS
*
*******************************************************************************/
static void mvCesaFragSizeFind(MV_CESA_SA *pSA, MV_CESA_REQ *pReq,
			       int cryptoOffset, int macOffset, int *pCopySize, int *pCryptoDataSize, int *pMacDataSize)
{
	MV_CESA_COMMAND *pCmd = pReq->pCmd;
	int cryptoDataSize, macDataSize, copySize;

	cryptoDataSize = macDataSize = 0;
	copySize = *pCopySize;

	if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_MAC_ONLY << MV_CESA_OPERATION_OFFSET)) {
		cryptoDataSize = MV_MIN((copySize - cryptoOffset), (pCmd->cryptoLength - (pReq->frags.cryptoSize + 1)));

		/* cryptoSize for each fragment must be the whole number of blocksSize */
		if (MV_IS_NOT_ALIGN(cryptoDataSize, pSA->cryptoBlockSize)) {
			cryptoDataSize = MV_ALIGN_DOWN(cryptoDataSize, pSA->cryptoBlockSize);
			copySize = cryptoOffset + cryptoDataSize;
		}
	}
	if ((pSA->config & MV_CESA_OPERATION_MASK) != (MV_CESA_CRYPTO_ONLY << MV_CESA_OPERATION_OFFSET)) {
		macDataSize = MV_MIN((copySize - macOffset), (pCmd->macLength - (pReq->frags.macSize + 1)));

		/* macSize for each fragment (except last) must be the whole number of blocksSize */
		if (MV_IS_NOT_ALIGN(macDataSize, MV_CESA_AUTH_BLOCK_SIZE)) {
			macDataSize = MV_ALIGN_DOWN(macDataSize, MV_CESA_AUTH_BLOCK_SIZE);
			copySize = macOffset + macDataSize;
		}
		cryptoDataSize = copySize - cryptoOffset;
	}
	*pCopySize = copySize;

	if (pCryptoDataSize != NULL)
		*pCryptoDataSize = cryptoDataSize;

	if (pMacDataSize != NULL)
		*pMacDataSize = macDataSize;
}