#include <rte_dmadev.h>

Data Fields
enum rte_dma_port_type	port_type

uint64_t	reserved [2]

uint64_t	coreid: 4

uint64_t	pfid: 8

uint64_t	vfen: 1

uint64_t	vfid: 16

uint64_t	pasid: 20

uint64_t	attr: 3

uint64_t	ph: 2

uint64_t	st: 16

union {
}	pcie

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

◆ port_type

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.

◆ coreid

uint64_t coreid

PCIe core id used.

Definition at line 528 of file rte_dmadev.h.

◆ pfid

uint64_t pfid

PF id used.

Definition at line 529 of file rte_dmadev.h.

◆ vfen

uint64_t vfen

VF enable bit.

Definition at line 530 of file rte_dmadev.h.

◆ vfid

uint64_t vfid

VF id used.

Definition at line 531 of file rte_dmadev.h.

◆ pasid

uint64_t pasid

The pasid filed in TLP packet.

Definition at line 533 of file rte_dmadev.h.

◆ attr

uint64_t attr

The attributes filed in TLP packet.

Definition at line 535 of file rte_dmadev.h.

◆ ph

uint64_t ph

The processing hint filed in TLP packet.

Definition at line 537 of file rte_dmadev.h.

◆ st

uint64_t st

The steering tag filed in TLP packet.

Definition at line 539 of file rte_dmadev.h.

◆

__extension__ union { ... } 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.

◆ reserved

uint64_t reserved[2]

Reserved for future fields.

Definition at line 544 of file rte_dmadev.h.

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

lib/dmadev/rte_dmadev.h

Data Fields