Provided by: dpdk-doc_24.11.2-2_all 
NAME
rte_dma_port_param
SYNOPSIS
#include <rte_dmadev.h>
Data Fields
enum rte_dma_port_type port_type
uint64_t reserved [2]
Detailed Description
A structure used to descript DMA access port parameters.
See also
struct rte_dma_vchan_conf::src_port
struct rte_dma_vchan_conf::dst_port
Definition at line 470 of file rte_dmadev.h.
Field Documentation
enum rte_dma_port_type port_type
The device access port type.
See also
enum rte_dma_port_type
Definition at line 475 of file rte_dmadev.h.
uint64_t coreid
PCIe core id used.
Definition at line 527 of file rte_dmadev.h.
uint64_t pfid
PF id used.
Definition at line 528 of file rte_dmadev.h.
uint64_t vfen
VF enable bit.
Definition at line 529 of file rte_dmadev.h.
uint64_t vfid
VF id used.
Definition at line 530 of file rte_dmadev.h.
uint64_t pasid
The pasid filed in TLP packet.
Definition at line 532 of file rte_dmadev.h.
uint64_t attr
The attributes filed in TLP packet.
Definition at line 534 of file rte_dmadev.h.
uint64_t ph
The processing hint filed in TLP packet.
Definition at line 536 of file rte_dmadev.h.
uint64_t st
The steering tag filed in TLP packet.
Definition at line 538 of file rte_dmadev.h.
__extension__ struct { ... } pcie
PCIe access port parameters.
The following model shows SoC's PCIe module connects to multiple PCIe hosts and multiple endpoints. The
PCIe module has an integrated DMA controller.
If the DMA wants to access the memory of host A, it can be initiated by PF1 in core0, or by VF0 of PF0 in
core0.
System Bus
| ----------PCIe module----------
| Bus
| Interface
| ----- ------------------
| | | | PCIe Core0 |
| | | | | -----------
| | | | PF-0 -- VF-0 | | Host A |
| | |--------| |- VF-1 |--------| Root |
| | | | PF-1 | | Complex |
| | | | PF-2 | -----------
| | | ------------------
| | |
| | | ------------------
| | | | PCIe Core1 |
| | | | | -----------
| | | | PF-0 -- VF-0 | | Host B |
|-----| |--------| PF-1 -- VF-0 |--------| Root |
| | | | |- VF-1 | | Complex |
| | | | PF-2 | -----------
| | | ------------------
| | |
| | | ------------------
| |DMA| | | ------
| | | | |--------| EP |
| | |--------| PCIe Core2 | ------
| | | | | ------
| | | | |--------| EP |
| | | | | ------
| ----- ------------------
Note
If some fields can not be supported by the hardware/driver, then the driver ignores those fields.
Please check driver-specific documentation for limitations and capabilities.
uint64_t reserved[2]
Reserved for future fields.
Definition at line 541 of file rte_dmadev.h.
Author
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DPDK Version 24.11.2 rte_dma_port_param(3)