/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date            Author           Notes
* 2020-2-7        Wayne            First version
*
******************************************************************************/

#ifndef __DRV_PDMA_H__
#define __DRV_PDMA_H__

#include <rtconfig.h>
#include <rtthread.h>
#include "NuMicro.h"

#ifndef NU_PDMA_SGTBL_POOL_SIZE
    #define NU_PDMA_SGTBL_POOL_SIZE (16)
#endif

#define NU_PDMA_CAP_NONE    (0 << 0)

#define NU_PDMA_EVENT_ABORT             (1 << 0)
#define NU_PDMA_EVENT_TRANSFER_DONE     (1 << 1)
#define NU_PDMA_EVENT_TIMEOUT           (1 << 2)
#define NU_PDMA_EVENT_ALL               (NU_PDMA_EVENT_ABORT | NU_PDMA_EVENT_TRANSFER_DONE | NU_PDMA_EVENT_TIMEOUT)
#define NU_PDMA_EVENT_MASK              NU_PDMA_EVENT_ALL
#define NU_PDMA_UNUSED                  (-1)

#define NU_PDMA_SG_LIMITED_DISTANCE     ((PDMA_DSCT_NEXT_NEXT_Msk>>PDMA_DSCT_NEXT_NEXT_Pos)+1)
#define NU_PDMA_MAX_TXCNT               ((PDMA_DSCT_CTL_TXCNT_Msk>>PDMA_DSCT_CTL_TXCNT_Pos) + 1)

typedef enum
{
    eMemCtl_SrcFix_DstFix,
    eMemCtl_SrcFix_DstInc,
    eMemCtl_SrcInc_DstFix,
    eMemCtl_SrcInc_DstInc,
    eMemCtl_Undefined = (-1)
} nu_pdma_memctrl_t;

typedef DSCT_T *nu_pdma_desc_t;

typedef void (*nu_pdma_cb_handler_t)(void *, uint32_t);

int nu_pdma_channel_allocate(int32_t i32PeripType);
rt_err_t nu_pdma_channel_free(int i32ChannID);
rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_cb_handler_t pfnHandler, void *pvUserData, uint32_t u32EventFilter);
rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, int32_t i32TransferCnt, uint32_t u32IdleTimeout_us);
int nu_pdma_transferred_byte_get(int32_t i32ChannID, int32_t i32TriggerByteLen);
void nu_pdma_channel_terminate(int i32ChannID);
nu_pdma_memctrl_t nu_pdma_channel_memctrl_get(int i32ChannID);
rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl);

nu_pdma_cb_handler_t nu_pdma_callback_hijack(int i32ChannID, nu_pdma_cb_handler_t *ppfnHandler_Hijack,
        void **ppvUserData_Hijack, uint32_t *pu32EventFilter_Hijack);

// For scatter-gather DMA
rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, int32_t TransferCnt, nu_pdma_desc_t next);
rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us);
rt_err_t nu_pdma_sgtbls_allocate(nu_pdma_desc_t *ppsSgtbls, int num);
void nu_pdma_sgtbls_free(nu_pdma_desc_t *ppsSgtbls, int num);

// For memory actor
void *nu_pdma_memcpy(void *dest, void *src, unsigned int count);
rt_size_t nu_pdma_mempush(void *dest, void *src, uint32_t data_width, unsigned int transfer_count);

#endif // __DRV_PDMA_H___