Functions
csl_edma3HwSetup.c File Reference

The file implements the API's which is used to configure all the DMA/QDMA channels in the EDMA module with the specified configuration. More...

#include <ti/csl/csl_edma3.h>
#include <ti/csl/csl_edma3Aux.h>

Functions

CSL_Status CSL_edma3HwSetup (CSL_Edma3Handle hMod, CSL_Edma3HwSetup *setup)

Detailed Description

The file implements the API's which is used to configure all the DMA/QDMA channels in the EDMA module with the specified configuration.

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Function Documentation

CSL_Status CSL_edma3HwSetup ( CSL_Edma3Handle  hMod,
CSL_Edma3HwSetup *  setup 
)

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CSL_edma3HwSetup

Description
This function does the setup for all DMA/QDMA channels by doing the following operations:-

  • Mapping DMA/QDMA Channels to PARAM Blocks.
  • Mapping DMA/QDMA Channels to Event Queues.
  • Setting up the trigger word for QDMA channels.

Arguments

            hMod            Edma module Handle
            setup           Pointer to the setup structure
      

Return Value CSL_Status
Success - CSL_SOK
Error - CSL_ESYS_BADHANDLE (The handle passed is invalid)
Error - CSL_ESYS_INVPARAMS (The parameter passed is invalid)

See also:
CSL_Edma3HwSetup

Pre Condition
CSL_edma3Init(), CSL_edma3Open() must be called successfully in that order before this API can be invoked

Post Condition
EDMA registers are configured according to the hardware setup parameters

Writes
TPCC_TPCC_DCHMAP_PAENTRY,
TPCC_TPCC_DMAQNUM_E0;TPCC_TPCC_DMAQNUM_E1;TPCC_TPCC_DMAQNUM_E2; TPCC_TPCC_DMAQNUM_E3;TPCC_TPCC_DMAQNUM_E4;TPCC_TPCC_DMAQNUM_E5; TPCC_TPCC_DMAQNUM_E6;TPCC_TPCC_DMAQNUM_E7;
TPCC_TPCC_QCHMAP_PAENTRY,
TPCC_TPCC_QCHMAP_TRWORD,
TPCC_TPCC_QDMAQNUM_E0;TPCC_TPCC_QDMAQNUM_E1;TPCC_TPCC_QDMAQNUM_E2; TPCC_TPCC_QDMAQNUM_E3;TPCC_TPCC_QDMAQNUM_E4;TPCC_TPCC_QDMAQNUM_E5; TPCC_TPCC_QDMAQNUM_E6;TPCC_TPCC_QDMAQNUM_E7

Example

            CSL_Edma3Handle             hModule;
            CSL_Edma3Obj                edmaObj;
            CSL_Status                  status;
            CSL_Edma3HwSetup            hwSetup;
            CSL_Edma3HwDmaChannelSetup  dmahwSetup[64];
            CSL_Edma3HwQdmaChannelSetup qdmahwSetup[8];

            // Module Initialization
            CSL_edma3Init(NULL);
            
            // Module Level Open
            hModule = CSL_edma3Open(&edmaObj,CSL_EDMA3,NULL,&status);
            ...
            // Module Setup
            hwSetup.dmaChaSetup  = &dmahwSetup[0];
            hwSetup.qdmaChaSetup = &qdmaSetup[0];
            CSL_edma3HwSetup(hModule,&hwSetup);
            ...
     

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