enet_dma.h

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/*
 *  Copyright (c) Texas Instruments Incorporated 2020
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ENET_DMA_H_
#define ENET_DMA_H_

/* ========================================================================== */
/*                             Include Files                                  */
/* ========================================================================== */

#include <stdint.h>
#include <ti/drv/enet/include/core/enet_types.h>
#include <ti/drv/enet/include/core/enet_queue.h>
#include <ti/drv/enet/include/core/enet_dma_pktutils.h>

#include <ti/drv/udma/udma.h>
#include <ti/drv/enet/include/dma/udma/enet_udma_types.h>
#include <ti/drv/enet/include/dma/udma/enet_udma.h>
#include <ti/drv/enet/include/dma/udma/enet_udma_psi.h>

#ifdef __cplusplus
extern "C" {
#endif

/* ========================================================================== */
/*                                 Macros                                     */
/* ========================================================================== */

#define Enet_isCacheCoherent()                  (Udma_isCacheCoherent())

#define ENETDMA_CACHELINE_ALIGNMENT            (UDMA_CACHELINE_ALIGNMENT)

#define ENET_DMA_STATS_HISTORY_CNT                  ((uint32_t)32U)

typedef EnetDma_Pkt *(*EnetDma_AllocEthPktFxn)(uint32_t pktSize,
                                               uint32_t alignSize,
                                               void *appPriv);

typedef void (*EnetDma_FreeEthPktFxn)(EnetDma_Pkt *pPktInfo);

typedef EnetQ EnetDma_PktQ;


/* ========================================================================== */
/*                         Structures and Enums                               */
/* ========================================================================== */

typedef struct EnetDma_CbStats_s
{
    uint64_t dataNotifyCnt;

    uint64_t zeroNotifyCnt;
    uint64_t totalPktCnt;
    uint64_t totalCycleCnt;

    uint64_t pktsPerNotifyMax;

    uint64_t pktsPerNotify[ENET_DMA_STATS_HISTORY_CNT];
    uint64_t cycleCntPerNotifyMax;

    uint64_t cycleCntPerNotify[ENET_DMA_STATS_HISTORY_CNT];
    uint64_t cycleCntPerPktMax;

    uint64_t cycleCntPerPkt[ENET_DMA_STATS_HISTORY_CNT];

    uint64_t readyDmaDescQCnt[ENET_DMA_STATS_HISTORY_CNT];
} EnetDma_CbStats;

typedef struct EnetDma_DmaDescStats_s
{
    uint64_t readyDmaDescEnq;
    uint64_t freeDmaDescDeq;
    uint64_t underFlowCnt;
} EnetDma_DmaDescStats;

typedef struct EnetDma_RxChStats_s
{
    EnetDma_CbStats submitPktStats;
    EnetDma_CbStats retrievePktStats;
    EnetDma_DmaDescStats dmaDescStats;
    uint64_t rxSubmitPktEnq;
    uint64_t rxRetrievePktDeq;
    uint64_t rxSubmitPktUnderFlowCnt;
}EnetDma_RxChStats;

typedef struct EnetDma_TxChStats_s
{
    EnetDma_CbStats submitPktStats;
    EnetDma_CbStats retrievePktStats;
    EnetDma_DmaDescStats dmaDescStats;
    uint64_t txSubmitPktEnq;
    uint64_t txRetrievePktDeq;
    uint64_t txSubmitPktOverFlowCnt;
} EnetDma_TxChStats;

/* ========================================================================== */
/*                         Global Variables Declarations                      */
/* ========================================================================== */

/* None */

/* ========================================================================== */
/*                          Function Declarations                             */
/* ========================================================================== */

EnetDma_Handle EnetDma_initDmaCfg(Enet_Type enetType,
                                  uint32_t instId,
                                  const EnetDma_initCfg *pDmaCfg);

int32_t EnetDma_deinitDmaCfg(EnetDma_Handle hEnetUdma);

EnetDma_Handle EnetDma_open(Enet_Type enetType,
                            uint32_t instId,
                            const void *dmaCfg);

int32_t EnetDma_close(EnetDma_Handle hEnetDma);

void EnetDma_initRxChParams(void *pRxChCfg);

EnetDma_RxChHandle EnetDma_openRxCh(EnetDma_Handle hDma,
                                    const void *pRxChCfg);

int32_t EnetDma_closeRxCh(EnetDma_RxChHandle hRxCh,
                          EnetDma_PktQ *fq,
                          EnetDma_PktQ *cq);

int32_t EnetDma_enableRxEvent(EnetDma_RxChHandle hRxCh);

int32_t EnetDma_disableRxEvent(EnetDma_RxChHandle hRxCh);

void EnetDma_initTxChParams(void *pTxChCfg);

EnetDma_TxChHandle EnetDma_openTxCh(EnetDma_Handle hDma,
                                    const void *pTxChCfg);

int32_t EnetDma_closeTxCh(EnetDma_TxChHandle hTxCh,
                          EnetDma_PktQ *fq,
                          EnetDma_PktQ *cq);

int32_t EnetDma_enableTxEvent(EnetDma_TxChHandle hTxCh);

int32_t EnetDma_disableTxEvent(EnetDma_TxChHandle hTxCh);

int32_t EnetDma_retrieveRxPktQ(EnetDma_RxChHandle hRxCh,
                               EnetDma_PktQ *pRetrieveQ);

int32_t EnetDma_retrieveRxPkt(EnetDma_RxChHandle hRxCh,
                              EnetDma_Pkt **pPkt);

int32_t EnetDma_submitRxPktQ(EnetDma_RxChHandle hRxCh,
                             EnetDma_PktQ *pSubmitQ);

int32_t EnetDma_submitRxPkt(EnetDma_RxChHandle hRxCh,
                            EnetDma_Pkt *pPkt);

int32_t EnetDma_retrieveTxPktQ(EnetDma_TxChHandle hTxCh,
                               EnetDma_PktQ *pRetrieveQ);

int32_t EnetDma_retrieveTxPkt(EnetDma_TxChHandle hTxCh,
                              EnetDma_Pkt **pPkt);

int32_t EnetDma_submitTxPktQ(EnetDma_TxChHandle hTxCh,
                             EnetDma_PktQ *pSubmitQ);

int32_t EnetDma_submitTxPkt(EnetDma_TxChHandle hTxCh,
                            EnetDma_Pkt *pPkt);

void EnetDma_initPktInfo(EnetDma_Pkt *pktInfo);

int32_t EnetDma_getRxChStats(EnetDma_RxChHandle hRxCh,
                             EnetDma_RxChStats *pStats);

int32_t EnetDma_getTxChStats(EnetDma_TxChHandle hTxCh,
                             EnetDma_TxChStats *pStats);

int32_t EnetDma_resetRxChStats(EnetDma_RxChHandle hRxCh);

int32_t EnetDma_resetTxChStats(EnetDma_TxChHandle hTxCh);

/* ========================================================================== */
/*                        Deprecated Function Declarations                    */
/* ========================================================================== */

/* None */

/* ========================================================================== */
/*                       Static Function Definitions                          */
/* ========================================================================== */

/* None */

#ifdef __cplusplus
}
#endif

#endif /* ENET_DMA_H_ */