openwrt/target/linux/generic/files/crypto/ocf/kirkwood/cesa/mvCesa.h

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/*******************************************************************************
* mvCesa.h - Header File for Cryptographic Engines and Security Accelerator
*
* DESCRIPTION:
*       This header file contains macros typedefs and function declaration for
*       the Marvell Cryptographic Engines and Security Accelerator.
*
*******************************************************************************/

#ifndef __mvCesa_h__
#define __mvCesa_h__

#include "mvOs.h"
#include "mvCommon.h"
#include "mvDebug.h"

#include "ctrlEnv/mvCtrlEnvSpec.h"

#include "cesa/mvMD5.h"
#include "cesa/mvSHA1.h"

#include "cesa/mvCesa.h"
#include "cesa/AES/mvAes.h"
#include "mvSysHwConfig.h"

#ifdef MV_INCLUDE_IDMA
#include "idma/mvIdma.h"
#include "idma/mvIdmaRegs.h"
#else
/* Redefine MV_DMA_DESC structure */
typedef struct _mvDmaDesc
{
    MV_U32 	byteCnt;        /* The total number of bytes to transfer        */
    MV_U32 	phySrcAdd;	    /* The physical source address                  */
    MV_U32 	phyDestAdd;     /* The physical destination address             */
    MV_U32	phyNextDescPtr; /* If we are using chain mode DMA transfer,     */
				            /* then this pointer should point to the        */
                            /* physical address of the next descriptor,     */
                            /* otherwise it should be NULL.                 */
}MV_DMA_DESC;
#endif /* MV_INCLUDE_IDMA */

#include "cesa/mvCesaRegs.h"

#define MV_CESA_AUTH_BLOCK_SIZE         64 /* bytes */

#define MV_CESA_MD5_DIGEST_SIZE         16 /* bytes */
#define MV_CESA_SHA1_DIGEST_SIZE        20 /* bytes */

#define MV_CESA_MAX_DIGEST_SIZE         MV_CESA_SHA1_DIGEST_SIZE

#define MV_CESA_DES_KEY_LENGTH          8   /* bytes = 64 bits */
#define MV_CESA_3DES_KEY_LENGTH         24  /* bytes = 192 bits */
#define MV_CESA_AES_128_KEY_LENGTH      16  /* bytes = 128 bits */
#define MV_CESA_AES_192_KEY_LENGTH      24  /* bytes = 192 bits */
#define MV_CESA_AES_256_KEY_LENGTH      32  /* bytes = 256 bits */

#define MV_CESA_MAX_CRYPTO_KEY_LENGTH   MV_CESA_AES_256_KEY_LENGTH

#define MV_CESA_DES_BLOCK_SIZE          8 /* bytes = 64 bits */
#define MV_CESA_3DES_BLOCK_SIZE         8 /* bytes = 64 bits */

#define MV_CESA_AES_BLOCK_SIZE          16 /* bytes = 128 bits */

#define MV_CESA_MAX_IV_LENGTH           MV_CESA_AES_BLOCK_SIZE

#define MV_CESA_MAX_MAC_KEY_LENGTH      64 /* bytes */

typedef struct
{
	MV_U8               cryptoKey[MV_CESA_MAX_CRYPTO_KEY_LENGTH];
	MV_U8               macKey[MV_CESA_MAX_MAC_KEY_LENGTH];
	MV_CESA_OPERATION   operation;
	MV_CESA_DIRECTION   direction;
	MV_CESA_CRYPTO_ALG  cryptoAlgorithm;
	MV_CESA_CRYPTO_MODE cryptoMode;
   	MV_U8               cryptoKeyLength;
	MV_CESA_MAC_MODE    macMode;
	MV_U8               macKeyLength;
	MV_U8               digestSize;

} MV_CESA_OPEN_SESSION;

typedef struct
{
    MV_BUF_INFO *pFrags;
	MV_U16	    numFrags;
    MV_U16      mbufSize;

} MV_CESA_MBUF;

typedef struct
{
    void* 	pReqPrv; /* instead of reqId */
    MV_U32 	retCode;
    MV_16   sessionId;

} MV_CESA_RESULT;

typedef void    (*MV_CESA_CALLBACK) (MV_CESA_RESULT* pResult);


typedef struct
{
    void*               pReqPrv;    /* instead of reqId */
    MV_CESA_MBUF*       pSrc;
    MV_CESA_MBUF*       pDst;
    MV_CESA_CALLBACK*   pFuncCB;
    MV_16               sessionId;
    MV_U16              ivFromUser;
    MV_U16              ivOffset;
    MV_U16              cryptoOffset;
    MV_U16              cryptoLength;
    MV_U16              digestOffset;
    MV_U16              macOffset;
    MV_U16              macLength;
    MV_BOOL		skipFlush;
} MV_CESA_COMMAND;



MV_STATUS   mvCesaHalInit (int numOfSession, int queueDepth, char* pSramBase, MV_U32 cryptEngBase, void *osHandle);
MV_STATUS   mvCesaFinish (void);
MV_STATUS   mvCesaSessionOpen(MV_CESA_OPEN_SESSION *pSession, short* pSid);
MV_STATUS   mvCesaSessionClose(short sid);
MV_STATUS   mvCesaCryptoIvSet(MV_U8* pIV, int ivSize);

MV_STATUS   mvCesaAction (MV_CESA_COMMAND* pCmd);

MV_U32      mvCesaInProcessGet(void);
MV_STATUS   mvCesaReadyDispatch(void);
MV_STATUS   mvCesaReadyGet(MV_CESA_RESULT* pResult);
MV_BOOL     mvCesaIsReady(void);

int     	mvCesaMbufOffset(MV_CESA_MBUF* pMbuf, int offset, int* pBufOffset);
MV_STATUS   mvCesaCopyFromMbuf(MV_U8* pDst, MV_CESA_MBUF* pSrcMbuf,
                               int offset, int size);
MV_STATUS   mvCesaCopyToMbuf(MV_U8* pSrc, MV_CESA_MBUF* pDstMbuf,
                               int offset, int size);
MV_STATUS   mvCesaMbufCopy(MV_CESA_MBUF* pMbufDst, int dstMbufOffset,
                           MV_CESA_MBUF* pMbufSrc, int srcMbufOffset, int size);

/********** Debug functions ********/

void        mvCesaDebugMbuf(const char* str, MV_CESA_MBUF *pMbuf, int offset, int size);
void        mvCesaDebugSA(short sid, int mode);
void        mvCesaDebugStats(void);
void        mvCesaDebugStatsClear(void);
void        mvCesaDebugRegs(void);
void        mvCesaDebugStatus(void);
void        mvCesaDebugQueue(int mode);
void        mvCesaDebugSram(int mode);
void        mvCesaDebugSAD(int mode);


/********  CESA Private definitions ********/
#if (MV_CESA_VERSION >= 2)
#if (MV_CACHE_COHERENCY  == MV_CACHE_COHER_SW)
#define MV_CESA_TDMA_CTRL_VALUE       MV_CESA_TDMA_DST_BURST_MASK(MV_CESA_TDMA_BURST_128B) \
                                    | MV_CESA_TDMA_SRC_BURST_MASK(MV_CESA_TDMA_BURST_128B) \
                                    | MV_CESA_TDMA_OUTSTAND_READ_EN_MASK                   \
				    | MV_CESA_TDMA_NO_BYTE_SWAP_MASK			   \
                                    | MV_CESA_TDMA_ENABLE_MASK
#else
#define MV_CESA_TDMA_CTRL_VALUE       MV_CESA_TDMA_DST_BURST_MASK(MV_CESA_TDMA_BURST_32B)  \
                                    | MV_CESA_TDMA_SRC_BURST_MASK(MV_CESA_TDMA_BURST_128B) \
                                    /*| MV_CESA_TDMA_OUTSTAND_READ_EN_MASK                   */\
                                    | MV_CESA_TDMA_ENABLE_MASK

#endif
#else
#define MV_CESA_IDMA_CTRL_LOW_VALUE   ICCLR_DST_BURST_LIM_128BYTE   \
                                    | ICCLR_SRC_BURST_LIM_128BYTE   \
                                    | ICCLR_INT_MODE_MASK           \
                                    | ICCLR_BLOCK_MODE              \
                                    | ICCLR_CHAN_ENABLE             \
                                    | ICCLR_DESC_MODE_16M
#endif /* MV_CESA_VERSION >= 2 */

#define MV_CESA_MAX_PKT_SIZE        (64 * 1024)
#define MV_CESA_MAX_MBUF_FRAGS      20

#define MV_CESA_MAX_REQ_FRAGS       ( (MV_CESA_MAX_PKT_SIZE / MV_CESA_MAX_BUF_SIZE) + 1)

#define MV_CESA_MAX_DMA_DESC    (MV_CESA_MAX_MBUF_FRAGS*2 + 5)

#define MAX_CESA_CHAIN_LENGTH	20

typedef enum
{
    MV_CESA_IDLE     = 0,
    MV_CESA_PENDING,
    MV_CESA_PROCESS,
    MV_CESA_READY,
#if (MV_CESA_VERSION >= 3)
    MV_CESA_CHAIN,
#endif
} MV_CESA_STATE;


/* Session database */

/* Map of Key materials of the session in SRAM.
 * Each field must be 8 byte aligned
 * Total size: 32 + 24 + 24 = 80 bytes
 */
typedef struct
{
    MV_U8  cryptoKey[MV_CESA_MAX_CRYPTO_KEY_LENGTH];
    MV_U8  macInnerIV[MV_CESA_MAX_DIGEST_SIZE];
    MV_U8  reservedInner[4];
    MV_U8  macOuterIV[MV_CESA_MAX_DIGEST_SIZE];
    MV_U8  reservedOuter[4];

} MV_CESA_SRAM_SA;

typedef struct
{
    MV_CESA_SRAM_SA*    pSramSA;
    MV_U32              config;
    MV_U8               cryptoKeyLength;
    MV_U8               cryptoIvSize;
    MV_U8               cryptoBlockSize;
    MV_U8               digestSize;
    MV_U8               macKeyLength;
    MV_U8               valid;
    MV_U8               ctrMode;
    MV_U32              count;

} MV_CESA_SA;

/* DMA list management */
typedef struct
{
    MV_DMA_DESC*    pDmaFirst;
    MV_DMA_DESC*    pDmaLast;

} MV_CESA_DMA;


typedef struct
{
    MV_U8               numFrag;
    MV_U8               nextFrag;
    int                 bufOffset;
    int                 cryptoSize;
    int                 macSize;
    int                 newDigestOffset;
    MV_U8               orgDigest[MV_CESA_MAX_DIGEST_SIZE];

} MV_CESA_FRAGS;

/* Request queue */
typedef struct
{
    MV_U8               state;
    MV_U8               fragMode;
    MV_U8               fixOffset;
    MV_CESA_COMMAND*    pCmd;
    MV_CESA_COMMAND*    pOrgCmd;
    MV_BUF_INFO         dmaDescBuf;
    MV_CESA_DMA         dma[MV_CESA_MAX_REQ_FRAGS];
    MV_BUF_INFO         cesaDescBuf;
    MV_CESA_DESC*       pCesaDesc;
    MV_CESA_FRAGS       frags;


} MV_CESA_REQ;


/* SRAM map */
/* Total SRAM size calculation */
/*  SRAM size =
 *              MV_CESA_MAX_BUF_SIZE  +
 *              sizeof(MV_CESA_DESC)  +
 *              MV_CESA_MAX_IV_LENGTH +
 *              MV_CESA_MAX_IV_LENGTH +
 *              MV_CESA_MAX_DIGEST_SIZE +
 *              sizeof(MV_CESA_SRAM_SA)
 *            = 1600 + 32 + 16 + 16 + 24 + 80 + 280 (reserved) = 2048 bytes
 *            = 3200 + 32 + 16 + 16 + 24 + 80 + 728 (reserved) = 4096 bytes
 */
typedef struct
{
    MV_U8               buf[MV_CESA_MAX_BUF_SIZE];
    MV_CESA_DESC        desc;
    MV_U8               cryptoIV[MV_CESA_MAX_IV_LENGTH];
    MV_U8               tempCryptoIV[MV_CESA_MAX_IV_LENGTH];
    MV_U8               tempDigest[MV_CESA_MAX_DIGEST_SIZE+4];
    MV_CESA_SRAM_SA     sramSA;

} MV_CESA_SRAM_MAP;


typedef struct
{
    MV_U32  openedCount;
    MV_U32  closedCount;
    MV_U32  fragCount;
    MV_U32  reqCount;
    MV_U32  maxReqCount;
    MV_U32  procCount;
    MV_U32  readyCount;
    MV_U32  notReadyCount;
    MV_U32  startCount;
#if (MV_CESA_VERSION >= 3)
    MV_U32  maxChainUsage;
#endif

} MV_CESA_STATS;


/* External variables */

extern MV_CESA_STATS    cesaStats;
extern MV_CESA_FRAGS    cesaFrags;

extern MV_BUF_INFO      cesaSramSaBuf;

extern MV_CESA_SA*       pCesaSAD;
extern MV_U16            cesaMaxSA;

extern MV_CESA_REQ*      pCesaReqFirst;
extern MV_CESA_REQ*      pCesaReqLast;
extern MV_CESA_REQ*      pCesaReqEmpty;
extern MV_CESA_REQ*      pCesaReqProcess;
extern int               cesaQueueDepth;
extern int               cesaReqResources;
#if (MV_CESA_VERSION>= 3)
extern MV_U32		cesaChainLength;
#endif

extern MV_CESA_SRAM_MAP*  cesaSramVirtPtr;
extern MV_U32           cesaSramPhysAddr;

static INLINE MV_ULONG  mvCesaVirtToPhys(MV_BUF_INFO* pBufInfo, void* pVirt)
{
    return (pBufInfo->bufPhysAddr + ((MV_U8*)pVirt - pBufInfo->bufVirtPtr));
}

/* Additional DEBUG functions */
void        mvCesaDebugSramSA(MV_CESA_SRAM_SA* pSramSA, int mode);
void        mvCesaDebugCmd(MV_CESA_COMMAND* pCmd,  int mode);
void        mvCesaDebugDescriptor(MV_CESA_DESC* pDesc);



#endif /* __mvCesa_h__ */