AM65x MCU+ SDK  09.01.00

Introduction

UDMA Channel related parameters and API.

Go to the source code of this file.

Data Structures

struct  Udma_ChPrms
 UDMA channel open parameters. More...
 
struct  Udma_ChTxPrms
 UDMA TX channel parameters. More...
 
struct  Udma_ChRxPrms
 UDMA RX channel parameters. More...
 
struct  Udma_ChPdmaPrms
 UDMA PDMA channel Static TR parameters. More...
 
struct  Udma_ChStats
 UDMA channel statistics. More...
 
struct  Udma_ChObject
 Opaque UDMA channel object. More...
 

Macros

#define UDMA_DMA_CH_INVALID   ((uint32_t) 0xFFFF0000U)
 Macro used to specify that DMA Channel ID is invalid. Used in the API Udma_chOpen. More...
 
#define UDMA_DMA_CH_ANY   ((uint32_t) 0xFFFF0001U)
 Macro used to specify any available DMA Channel while requesting one. Used in the API Udma_chOpen. More...
 
#define UDMA_DMA_CH_NA   ((uint32_t) 0xFFFF0002U)
 Macro used to specify that the DMA Channel is not applicable for a particular mode. More...
 
#define UDMA_MAPPED_GROUP_INVALID   ((uint32_t) 0xFFFF0004U)
 Macro used to specify that the Mapped Channel Group is invalid. More...
 
#define UDMA_DMSC_EXTENDED_CH_TYPE_BCDMA_BLK_CPY   ((uint8_t) 1U)
 DMSC Extended Channel Type Flag for BCDMA Block Copy. More...
 
#define UDMA_DMSC_EXTENDED_CH_TYPE_BCDMA_SPLIT_TR_TX   ((uint8_t) 0U)
 DMSC Extended Channel Type Flag for BCDMA split TR TX channels. More...
 
#define UDMA_CH_TYPE_UTC   (UDMA_CH_FLAG_UTC)
 UTC channel. This could be. More...
 
UDMA Channel Flag

UDMA channel flags bit field used to form the channel type.

#define UDMA_CH_FLAG_TX   ((uint32_t) 0x0001U)
 TX channel flag. More...
 
#define UDMA_CH_FLAG_RX   ((uint32_t) 0x0002U)
 RX channel flag. More...
 
#define UDMA_CH_FLAG_BLK_COPY   ((uint32_t) 0x0004U)
 Block copy mode channel flag. More...
 
#define UDMA_CH_FLAG_PDMA   ((uint32_t) 0x0008U)
 PDMA channel flag. More...
 
#define UDMA_CH_FLAG_PSIL   ((uint32_t) 0x0010U)
 PSIL channel flag meant for periperals like Ethernet, SA2UL. More...
 
#define UDMA_CH_FLAG_UTC   ((uint32_t) 0x0020U)
 UTC channel flag. More...
 
#define UDMA_CH_FLAG_HC   ((uint32_t) 0x0040U)
 High capacity channel flag. More...
 
#define UDMA_CH_FLAG_UHC   ((uint32_t) 0x0080U)
 Ultra high capacity channel flag. More...
 
#define UDMA_CH_FLAG_MAPPED   ((uint32_t) 0x0100U)
 Mapped TX/RX channel flag. More...
 
UDMA Channel Type

UDMA channel type formed based on channel flags.

#define UDMA_CH_TYPE_TR_BLK_COPY
 TR block copy type - TX/RX pair. More...
 
#define UDMA_CH_TYPE_TR_BLK_COPY_HC
 High capacity TR block copy type - TX/RX pair. More...
 
#define UDMA_CH_TYPE_TR_BLK_COPY_UHC
 Ultra high capacity TR block copy type - TX/RX pair. More...
 
#define UDMA_CH_TYPE_TX   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PSIL)
 TX channel type. More...
 
#define UDMA_CH_TYPE_TX_HC   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PSIL | UDMA_CH_FLAG_HC)
 High capacity TX channel type. More...
 
#define UDMA_CH_TYPE_TX_UHC   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PSIL | UDMA_CH_FLAG_UHC)
 Ultra high capacity TX channel type. More...
 
#define UDMA_CH_TYPE_RX   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PSIL)
 RX channel type. More...
 
#define UDMA_CH_TYPE_RX_HC   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PSIL | UDMA_CH_FLAG_HC)
 High capacity RX channel type. More...
 
#define UDMA_CH_TYPE_RX_UHC   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PSIL | UDMA_CH_FLAG_UHC)
 Ultra high capacity RX channel type. More...
 
#define UDMA_CH_TYPE_PDMA_TX   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PDMA)
 PDMA TX channel type. More...
 
#define UDMA_CH_TYPE_PDMA_TX_HC   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PDMA | UDMA_CH_FLAG_HC)
 High capacity PDMA TX channel type. More...
 
#define UDMA_CH_TYPE_PDMA_TX_UHC   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PDMA | UDMA_CH_FLAG_UHC)
 Ultra high capacity PDMA TX channel type. More...
 
#define UDMA_CH_TYPE_PDMA_RX   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PDMA)
 PDMA RX channel type. More...
 
#define UDMA_CH_TYPE_PDMA_RX_HC   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PDMA | UDMA_CH_FLAG_HC)
 High capacity PDMA RX channel type. More...
 
#define UDMA_CH_TYPE_PDMA_RX_UHC   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PDMA | UDMA_CH_FLAG_UHC)
 Ultra high capacity PDMA RX channel type. More...
 
#define UDMA_CH_TYPE_TX_MAPPED   (UDMA_CH_FLAG_TX | UDMA_CH_FLAG_PSIL | UDMA_CH_FLAG_MAPPED)
 Mapped TX channel. This could be different type of mapped TX channels. See Udma_MappedTxGrpSoc for differnt types of SOC specific mapped TX channels. More...
 
#define UDMA_CH_TYPE_RX_MAPPED   (UDMA_CH_FLAG_RX | UDMA_CH_FLAG_PSIL | UDMA_CH_FLAG_MAPPED)
 Mapped RX channel. This could be different type of mapped RX channels. See Udma_MappedRxGrpSoc for differnt types of SOC specific mapped RX channels. More...
 
UDMA PDMA element size

#define UDMA_PDMA_ES_8BITS   ((uint32_t) 0x00U)
 
#define UDMA_PDMA_ES_16BITS   ((uint32_t) 0x01U)
 
#define UDMA_PDMA_ES_24BITS   ((uint32_t) 0x02U)
 
#define UDMA_PDMA_ES_32BITS   ((uint32_t) 0x03U)
 
#define UDMA_PDMA_ES_64BITS   ((uint32_t) 0x04U)
 
#define UDMA_PDMA_ES_DONTCARE   ((uint32_t) 0x00U)
 Set this for MCAN element size - not applicable. More...
 

Functions

int32_t Udma_chOpen (Udma_DrvHandle drvHandle, Udma_ChHandle chHandle, uint32_t chType, const Udma_ChPrms *chPrms)
 UDMA open channel. More...
 
int32_t Udma_chClose (Udma_ChHandle chHandle)
 UDMA close channel. More...
 
int32_t Udma_chConfigTx (Udma_ChHandle chHandle, const Udma_ChTxPrms *txPrms)
 UDMA configure TX channel. More...
 
int32_t Udma_chConfigRx (Udma_ChHandle chHandle, const Udma_ChRxPrms *rxPrms)
 UDMA configure RX channel. More...
 
int32_t Udma_chConfigPdma (Udma_ChHandle chHandle, const Udma_ChPdmaPrms *pdmaPrms)
 UDMA configure PDMA channel (peerChNum as part of Udma_ChPrms) paired with the UDMAP channel. More...
 
int32_t Udma_chEnable (Udma_ChHandle chHandle)
 UDMA channel enable API. More...
 
int32_t Udma_chDisable (Udma_ChHandle chHandle, uint32_t timeout)
 UDMA channel teardown and disable API. More...
 
int32_t Udma_chPause (Udma_ChHandle chHandle)
 UDMA channel pause API. More...
 
int32_t Udma_chResume (Udma_ChHandle chHandle)
 UDMA channel resume API. More...
 
uint32_t Udma_chGetNum (Udma_ChHandle chHandle)
 Returns the channel number offset with in a channel type - TX, RX and External (UTC) channel types. More...
 
Udma_RingHandle Udma_chGetFqRingHandle (Udma_ChHandle chHandle)
 Returns the default free ring handle of the channel. More...
 
Udma_RingHandle Udma_chGetCqRingHandle (Udma_ChHandle chHandle)
 Returns the default completion ring handle of the channel. More...
 
Udma_RingHandle Udma_chGetTdCqRingHandle (Udma_ChHandle chHandle)
 Returns the teardown completion ring handle of the channel. More...
 
uint16_t Udma_chGetFqRingNum (Udma_ChHandle chHandle)
 Returns the default free ring number to be programmed in descriptor. More...
 
uint16_t Udma_chGetCqRingNum (Udma_ChHandle chHandle)
 Returns the default completion ring number to be programmed in descriptor. More...
 
Udma_FlowHandle Udma_chGetDefaultFlowHandle (Udma_ChHandle chHandle)
 Returns the default flow handle of the RX channel. More...
 
uint32_t Udma_chGetTriggerEvent (Udma_ChHandle chHandle, uint32_t trigger)
 Returns the global trigger event for the channel. More...
 
void * Udma_chGetSwTriggerRegister (Udma_ChHandle chHandle)
 Returns the software trigger register address for the channel. More...
 
int32_t Udma_chSetSwTrigger (Udma_ChHandle chHandle, uint32_t trigger)
 Sets the software trigger register based on the trigger mode provided. More...
 
int32_t Udma_chSetChaining (Udma_ChHandle triggerChHandle, Udma_ChHandle chainedChHandle, uint32_t trigger)
 Chains the trigger channel with the chained channel. More...
 
int32_t Udma_chBreakChaining (Udma_ChHandle triggerChHandle, Udma_ChHandle chainedChHandle)
 Breaks the chaining by resetting the trigger channel's OES. More...
 
void UdmaChPrms_init (Udma_ChPrms *chPrms, uint32_t chType)
 Udma_ChPrms structure init function. More...
 
void UdmaChTxPrms_init (Udma_ChTxPrms *txPrms, uint32_t chType)
 Udma_ChTxPrms structure init function. More...
 
void UdmaChRxPrms_init (Udma_ChRxPrms *rxPrms, uint32_t chType)
 Udma_ChRxPrms structure init function. More...
 
void UdmaChPdmaPrms_init (Udma_ChPdmaPrms *pdmaPrms)
 Udma_ChPdmaPrms structure init function. More...
 
int32_t Udma_chGetStats (Udma_ChHandle chHandle, Udma_ChStats *chStats)
 Get real-time channel statistics. More...
 
int32_t Udma_getPeerData (Udma_ChHandle chHandle, uint32_t *peerData)
 Get real-time peer data which contains number of bytes written. More...
 
int32_t Udma_clearPeerData (Udma_ChHandle chHandle, uint32_t peerData)
 Clear real-time peer data which contains number of bytes written. More...