| rte_dma_port_param(3) | Library Functions Manual | rte_dma_port_param(3) |
rte_dma_port_param
#include <rte_dmadev.h>
enum rte_dma_port_type port_type
uint64_t reserved [2]
A structure used to descript DMA access port parameters.
See also
struct rte_dma_vchan_conf::dst_port
Definition at line 470 of file rte_dmadev.h.
The device access port type.
See also
Definition at line 475 of file rte_dmadev.h.
PCIe core id used.
Definition at line 527 of file rte_dmadev.h.
PF id used.
Definition at line 528 of file rte_dmadev.h.
VF enable bit.
Definition at line 529 of file rte_dmadev.h.
VF id used.
Definition at line 530 of file rte_dmadev.h.
The pasid filed in TLP packet.
Definition at line 532 of file rte_dmadev.h.
The attributes filed in TLP packet.
Definition at line 534 of file rte_dmadev.h.
The processing hint filed in TLP packet.
Definition at line 536 of file rte_dmadev.h.
The steering tag filed in TLP packet.
Definition at line 538 of file rte_dmadev.h.
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
Reserved for future fields.
Definition at line 541 of file rte_dmadev.h.
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