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/* DMA.h - DMA functions and definitions*/
/* Copyright Galileo Technology. */
#ifndef __INCdmah
#define __INCdmah
/* includes */
#include "core.h"
/* defines */
#define FIRST_DMA_ENGINE 0
#define LAST_DMA_ENGINE 3
#define FLY_BY BIT0
#define RD_WR_FLY BIT1
#define DECREMENT_SOURCE_ADDRESS BIT2
#define HOLD_SOURCE_ADDRESS BIT3
#define DECREMENT_DEST_ADDRESS BIT4
#define HOLD_DEST_ADDRESS BIT5
#define DTL_1BYTE BIT6 | BIT8
#define DTL_2BYTES BIT7 | BIT8
#define DTL_4BYTES BIT7
#define DTL_8BYTES NO_BIT
#define DTL_16BYTES BIT6
#define DTL_32BYTES BIT6 | BIT7
#define DTL_64BYTES BIT6 | BIT7 | BIT8
#define NON_CHAIN_MOD BIT9
#define INT_EVERY_NULL_POINTER BIT10
#define BLOCK_TRANSFER_MODE BIT11
#define CHANNEL_ENABLE BIT12
#define FETCH_NEXT_RECORED BIT13
#define DMA_ACTIVITY_STATUS BIT14
#define ALIGN_TOWARD_DEST BIT15
#define MASK_DMA_REQ BIT16
#define ENABLE_DESCRIPTOR BIT17
#define ENABLE_EOT BIT18
#define ENABLE_EOT_INTERRUPT BIT19
#define ABORT_DMA BIT20
#define SOURCE_ADDR_IN_PCI0 BIT21
#define SOURCE_ADDR_IN_PCI1 BIT22
#define DEST_ADDR_IN_PCI0 BIT23
#define DEST_ADDR_IN_PCI1 BIT24
#define REC_ADDR_IN_PCI0 BIT25
#define REC_ADDR_IN_PCI1 BIT26
#define REQ_FROM_TIMER_COUNTER BIT28
/* typedefs */
typedef enum dmaEngine{DMA_ENG_0,DMA_ENG_1,DMA_ENG_2,DMA_ENG_3} DMA_ENGINE;
/* priority definitions */
typedef enum prioChan01{ROUND_ROBIN01,CH_1,CH_0} PRIO_CHAN_0_1;
typedef enum prioChan23{ROUND_ROBIN23,CH_3,CH_2} PRIO_CHAN_2_3;
typedef enum prioGroup{ROUND_ROBIN,CH_2_3,CH_0_1} PRIO_GROUP;
typedef enum prioOpt{RETURN_BUS,KEEP_BUS} PRIO_OPT;
typedef struct dmaRecored
{
unsigned int ByteCnt;
unsigned int SrcAdd;
unsigned int DestAdd;
unsigned int NextRecPtr;
} DMA_RECORED;
typedef enum __dma_status{CHANNEL_BUSY,NO_SUCH_CHANNEL,DMA_OK,
GENERAL_ERROR} DMA_STATUS;
DMA_STATUS dmaTransfer (DMA_ENGINE engine,unsigned int sourceAddr,
unsigned int destAddr,unsigned int numOfBytes,
unsigned int command,DMA_RECORED * nextRecoredPointer);
bool dmaCommand (DMA_ENGINE channel,unsigned int command);
bool isDmaChannelActive (DMA_ENGINE channel);
bool changeDmaPriority(PRIO_CHAN_0_1 prio_01, PRIO_CHAN_2_3 prio_23,
PRIO_GROUP prioGrp, PRIO_OPT prioOpt);
#endif /* __INCdmah */
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