AM65x MCU+ SDK  09.01.00

Detailed Description

UDMA RX channel parameters.

Data Fields

uint8_t pauseOnError
 
uint8_t addrType
 
uint8_t chanType
 
uint16_t fetchWordSize
 
uint8_t busPriority
 
uint8_t busQos
 
uint8_t busOrderId
 
uint8_t dmaPriority
 
uint16_t flowIdFwRangeStart
 
uint16_t flowIdFwRangeCnt
 
uint8_t flowEInfoPresent
 
uint8_t flowPsInfoPresent
 
uint8_t flowErrorHandling
 
uint8_t flowSopOffset
 
uint8_t ignoreShortPkts
 
uint8_t ignoreLongPkts
 
uint32_t configDefaultFlow
 
uint8_t burstSize
 

Field Documentation

◆ pauseOnError

uint8_t Udma_ChRxPrms::pauseOnError

[IN] Bool: When set (TRUE), pause channel on error

◆ addrType

uint8_t Udma_ChRxPrms::addrType

[IN] Address type for this channel. Refer tisci_msg_rm_udmap_rx_ch_cfg_req::rx_atype

◆ chanType

uint8_t Udma_ChRxPrms::chanType

◆ fetchWordSize

uint16_t Udma_ChRxPrms::fetchWordSize

[IN] Descriptor/TR Size in 32-bit words

◆ busPriority

uint8_t Udma_ChRxPrms::busPriority

[IN] 3-bit priority value (0=highest, 7=lowest)

◆ busQos

uint8_t Udma_ChRxPrms::busQos

[IN] 3-bit qos value (0=highest, 7=lowest)

◆ busOrderId

uint8_t Udma_ChRxPrms::busOrderId

[IN] 4-bit orderid value

◆ dmaPriority

uint8_t Udma_ChRxPrms::dmaPriority

[IN] This field selects which scheduling bin the channel will be placed in for bandwidth allocation of the Tx DMA units. Refer tisci_msg_rm_udmap_rx_ch_cfg_req::rx_sched_priority

◆ flowIdFwRangeStart

uint16_t Udma_ChRxPrms::flowIdFwRangeStart

[IN] Starting flow ID value for firewall check

◆ flowIdFwRangeCnt

uint16_t Udma_ChRxPrms::flowIdFwRangeCnt

[IN] Number of valid flow ID's starting from flowIdFwRangeStart for firewall check

◆ flowEInfoPresent

uint8_t Udma_ChRxPrms::flowEInfoPresent

[IN] default flow config parameter for EPIB Refer tisci_msg_rm_udmap_flow_cfg_req::rx_einfo_present

◆ flowPsInfoPresent

uint8_t Udma_ChRxPrms::flowPsInfoPresent

[IN] default flow config parameter for psInfo Refer tisci_msg_rm_udmap_flow_cfg_req::rx_psinfo_present

◆ flowErrorHandling

uint8_t Udma_ChRxPrms::flowErrorHandling

[IN] default flow config parameter for Error Handling Refer tisci_msg_rm_udmap_flow_cfg_req::rx_error_handling

◆ flowSopOffset

uint8_t Udma_ChRxPrms::flowSopOffset

[IN] default flow config parameter for SOP offset Refer tisci_msg_rm_udmap_flow_cfg_req::rx_sop_offset

◆ ignoreShortPkts

uint8_t Udma_ChRxPrms::ignoreShortPkts

[IN] Bool: This field controls whether or not short packets will be treated as exceptions (FALSE) or ignored (TRUE) for the channel. This field is only used when the channel is in split UTC mode.

◆ ignoreLongPkts

uint8_t Udma_ChRxPrms::ignoreLongPkts

[IN] Bool: This field controls whether or not long packets will be treated as exceptions (FALSE) or ignored (TRUE) for the channel. This field is only used when the channel is in split UTC mode.

◆ configDefaultFlow

uint32_t Udma_ChRxPrms::configDefaultFlow

[IN] Bool: This field controls whether or not to program the default flow. TRUE - Configures the default flow equal to the RX channel number FALSE - Doesn't configure the default flow of channel. The caller can allocate and use other generic flows or get the default flow handle and configure the flow using Udma_flowConfig API at a later point of time

◆ burstSize

uint8_t Udma_ChRxPrms::burstSize

[IN] Specifies the nominal burst size and alignment for data transfers on this channel. Refer tisci_msg_rm_udmap_rx_ch_cfg_req::rx_burst_size. Note1: This parameter should be set less than or equal to the FIFO depth parameter set for UTC channel i.e. fifoDepth >= burstSize Note2: In case of packet mode TX channels, the Tx fifoDepth must be at least 2 PSI-L data phases (32 bytes) larger than the burst size given in this field in order to hold the packet info and extended packet info header which is placed at the front of the data packet in addition to the payload i.e. fifoDepth >= (burstSize + 32 bytes)

Below are the supported burst sizes for various channel types Normal Capacity Channel - 64 bytes High Capacity Channel - 64, 128 or 256 bytes Ultra High Capacity Channel - 64, 128 or 256 bytes