Data Fields
CpswDma_OpenTxChPrms_s Struct Reference

Param struct for the Tx channel open function. More...

#include <cpsw_dma.h>

Data Fields

Udma_DrvHandle hUdmaDrv
 
uint32_t chNum
 
CpswDma_UdmaChPrms udmaChPrms
 
CpswDma_UdmaChTxPrms udmaTxChPrms
 
CpswDma_PktNotifyCb notifyCb
 
uint32_t numTxPkts
 
bool disableCacheOpsFlag
 
CpswDma_AllocRingMemFxn ringMemAllocFxn
 
CpswDma_FreeRingMemFxn ringMemFreeFxn
 
CpswDma_AllocDmaDesccFxn dmaDescAllocFxn
 
CpswDma_FreeDmaDescFxn dmaDescFreeFxn
 
void * hCbArg
 
bool useProxy
 

Detailed Description

Param struct for the Tx channel open function.

The parameter structure for the Tx channel open function, containing a channel config structure.

Field Documentation

uint32_t CpswDma_OpenTxChPrms_s::chNum

UDMA channel to number allocated for transmit. Set to #UDMA_DMA_CH_ANY if the channel to allocate and open could be any from the free pool

bool CpswDma_OpenTxChPrms_s::disableCacheOpsFlag

Flag to disable cache operations on the ring memory

CpswDma_AllocDmaDesccFxn CpswDma_OpenTxChPrms_s::dmaDescAllocFxn

DMA HPD (host packet descriptor) memory allocation callback

CpswDma_FreeDmaDescFxn CpswDma_OpenTxChPrms_s::dmaDescFreeFxn

Transmit HPD (host packet descriptor) memory free callback

void* CpswDma_OpenTxChPrms_s::hCbArg

Argument to be used for the callback routines (it should mean something to layer into which the callback calls)

Udma_DrvHandle CpswDma_OpenTxChPrms_s::hUdmaDrv

UDMA driver handle

CpswDma_PktNotifyCb CpswDma_OpenTxChPrms_s::notifyCb

CPSW DMA event callback function - this function will be called when the registered packets are transmitted on TX channel

uint32_t CpswDma_OpenTxChPrms_s::numTxPkts

Maximum number of transmit packets, used for allocating number of DMA descriptors Note - The HW ring element count field is 19-bit

CpswDma_AllocRingMemFxn CpswDma_OpenTxChPrms_s::ringMemAllocFxn

Callback functions. Callback function typedefs so that the CpswDma layer can call into the app layer and let it translate between the hardware buffer descriptors and packets and the stack/translation layer's buffers and packets

Ring memory allocation callback, this cannot be NULL

CpswDma_FreeRingMemFxn CpswDma_OpenTxChPrms_s::ringMemFreeFxn

Ring memory free function callback, used in close flow

CpswDma_UdmaChPrms CpswDma_OpenTxChPrms_s::udmaChPrms

UDMA channel params

CpswDma_UdmaChTxPrms CpswDma_OpenTxChPrms_s::udmaTxChPrms

UDMA transmit channel params

bool CpswDma_OpenTxChPrms_s::useProxy

Flag to indicate if a dedicated proxy should be allocated for the "FQ" for this flow. This should be enabled only for those flows that require very high throughput as there are limited proxy available in the system


The documentation for this struct was generated from the following file:

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